{"count":524,"message":"Results returned successfully","results":[{"odiNumber":11753543,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/22/2026","dateComplaintFiled":"07/29/2026","vin":"1GTU9FET7MZ","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"CORRODED GROUNDING STRAP FAILED CYLINDER 5 GLOW PLUG CIRCUIT CRACKED AND SEPARATED EXHAUST BACKPRESSURE VALVE","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11753048,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/29/2026","dateComplaintFiled":"07/27/2026","vin":"1GTP9EELXMZ","components":"ENGINE","summary":"The vehicle has about 38000. The warrantee expired about 6 months ago. About three weeks ago I started the engine, it sounded like a cement mixer filled with rocks. I had it taken to my dealer. They investigated the problem and determined that it has bad lifters and bent push rods. The dealer told me that it is a known problem but it is not covered by the current 6.2l engine recall","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11752674,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/16/2026","dateComplaintFiled":"07/24/2026","vin":"3GTU9DED1MG","components":"STEERING,SUSPENSION,SERVICE BRAKES","summary":"Vehicle: 2021 GMC Sierra SLT | VIN: [XXX] Dealership: Carl Black GMC Roswell, GA (11225 Alpharetta Hwy, 30076) | Invoice #[XXX] | Service Date: [XXX] Paragraph 1 \u2013 Suspension Hazard: Dealership diagnosed a worn left upper ball joint (popping sound on left turns) and installed Rough Country aftermarket upper control arms on my stock-height Sierra SLT. These arms are designed for lifted suspension and alter factory caster/camber geometry, placing extreme stress on ball joints. This can cause sudden ball joint separation, wheel collapse, and total loss of steering control at speed. The dealership admitted on the invoice they \"could not find branding\" on original parts and chose non-OEM lift components without my consent or any safety disclosure. Paragraph 2 \u2013 Brake Failure & No Safety Warning: The same service included a full front/rear brake job (pads + resurfaced rotors) using their certified technicians and parts. After pickup, the brakes failed to operate properly. When I returned, the service manager refused to correct their own workmanship and instead quoted $1,900 to repair the very brakes they just serviced. Most critically, at vehicle pickup they issued no written or verbal safety warning\u2014no \"do not drive\" instruction\u2014despite the brakes being knowingly compromised, endangering me and the public. Paragraph 3 \u2013 Requested Action: The service manager was unprofessional, condescending, and refused accountability. I request an immediate NHTSA investigation into Carl Black GMC's unauthorized use of lift-kit suspension parts on stock vehicles, failure to warranty their own brake service, and reckless omission of safety warnings at delivery. This dealership pattern poses an imminent public risk. Please escalate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11752087,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/25/2026","dateComplaintFiled":"07/22/2026","vin":"3GTP9EEL1MG","components":"POWER TRAIN,ENGINE","summary":"On June 25, 2026, at approximately 84,000 miles, while traveling approximately 60-65 mph on Highway 121 in a posted 65 mph zone, driving my 2021 GMC Sierra 1500 AT4 equipped with the 6.2L L87 engine, multiple warning messages suddenly appeared, including \u201cCheck ESC,\u201d \u201cCheck Parking Brake,\u201d \u201cCheck Brakes,\u201d and \u201cCheck Engine.\u201d The engine began operating abnormally. I drove directly to Sewell GMC because I was concerned that the engine could fail or the vehicle could lose propulsion while in traffic. There was no crash, fire, or injury. Sewell GMC inspected the vehicle and confirmed catastrophic internal engine damage. The technician found metal debris in the engine oil and oil pan, damaged internal bearings, and camshaft/lifter damage. Sewell advised that the complete engine must be replaced. The vehicle remains at the dealership, has not yet been repaired, and the engine and failed components should be available for inspection. Before this incident, I had not experienced warning lights or symptoms indicating that an imminent catastrophic engine failure would occur. GM and the dealership advised that my VIN is not included in the current L87 engine recall because the engine was built in 2020. However, the diagnosed bearing damage, metal contamination, and catastrophic engine failure appear similar to the engine failures addressed by that recall. I am reporting this because an unexpected internal engine failure while driving creates a serious risk of loss of propulsion and a collision.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11751500,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/16/2026","dateComplaintFiled":"07/20/2026","vin":"1GTP9EEL9MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 35 MPH, the engine was making an abnormal sound, and the vehicle failed to accelerate. The engine was popping and making cranking sounds, with several unknown warning lights illuminated. The vehicle was driven back to the residence with the issues. The contact referenced NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); as a possible cause for the failure; however, the VIN was not included in the recall. The vehicle was taken to a dealer where it was determined that there was metal fragments found in the oil filter, and recommended that the engine be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 50,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11751279,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/11/2026","dateComplaintFiled":"07/18/2026","vin":"1GTP9EEL0MZ","components":"ENGINE","summary":"I'm not sure if they've pulled it out yet. They said two weeks to get motor. Engine started shaking and then started knocking. Had wrecker take it to GMC dealer they said it needs an engine. It is a 2021 6.2 carbon pro 1500 Sierra AT4 it did not come up on recall list and I don't know why? it obviously the same problem.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11751124,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/11/2026","dateComplaintFiled":"07/17/2026","vin":"1GTU9EET0MZ","components":"ENGINE","summary":"At 115,000 the coolant control valve has gone out. GM acknowledges this issues in 2020 model trucks. My truck is a 21 and displaying the same characteristics. A simple google search will show this is a known issue in 2021 vehicles as well. In 2020 model trucks GM has provided a special 150,000 mile warranty to replace this part. GM needs to step up and provide a proper warranty/recall for the affected 2021 models.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11750814,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/16/2026","dateComplaintFiled":"07/16/2026","vin":"3gtu9cet6mg","components":"FUEL/PROPULSION SYSTEM","summary":"P1098 code indicating stuck/ unresponsive engine coolant control valve. N252508341 exists for this part; however claim is my VIN is not covered under the bulletin or included on any standard warranty coverage. Part should last more than 150k miles, vehicle less than 90k. Less than 2 weeks ago suffered a complete EBPV failure that destroyed coolant and DEF lines, also not covered. No explanation for why my specific VIN (a 3.0L diesel in the supposedly covered MY) is excluded. Have been unable to find evidence of any applicable vehicles that were 'covered' under this bulletin. Fault forces an unexpected derate which can engage while accelerating, including while merging into freeway traffic. This is an obvious safety hazard. Engine check light illuminates approximately 30 to 60 seconds before derate limits top speed and throttle response. No messages to operator. Dealer has confirmed issue.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11750566,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2026","dateComplaintFiled":"07/15/2026","vin":"1gtr9ced1mz","components":"POWER TRAIN","summary":"The 10 speed automatic transmission shakes and jumps between gears. The transmission also shakes and rumbles at cruising speeds. The diesel engine version of this truck is already recalled. My truck is a gas engine and should also be recalled. This is the same defective 10 speed transmission used in all GM vehicles and recalled in many. This vehicle needs to be recalled and fix before the wheels lock up and kill someone.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11750221,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/09/2026","dateComplaintFiled":"07/14/2026","vin":"3gtu9del8mg","components":"ENGINE","summary":"I was driving and my check engine light came on a mile from my house. I drove home and the next morning, I started my truck. It was loud and pulsating like it wanted to stall out. I had it towed to a repair shop. They plugged into the truck and said it was giving code P0016. I had it towed to another place and that it is where it is sitting now. I also received a email from onstar saying \"A critical issue with the engine and transmission system in your 2021 GMC sierra Crew Cab has been detected. P0016 was detected. I searched my VIN # and it says that there are no recalls on my truck. I do see that there was a silent recall on the engine that is in my truck.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11750329,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/02/2026","dateComplaintFiled":"07/14/2026","vin":"1GTP9EEL1MZ","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"I am submitting supplemental evidence regarding my 2021 GMC Sierra (VIN [XXX]) for Recall Query RQ26001, Campaign 25V-274. Despite multiple repair attempts, my vehicle remains unsafe and non-compliant with GM Service Bulletin N252494002. The recall remedy was performed deficiently. [XXX] Northeast Buick GMC installed a remanufactured short block instead of the required complete engine, reused the original seized-engine oil pan (which continues to leak), and failed to address critical electrical damage. Documentation proves they deleted Labor Operation 14BUZ (Engine Electrical) after their technician noted a blown mega fuse. A second dealer, Penske Chevrolet, subsequently deleted Labor Operation 77CVZ01 from my repair order, demonstrating a systemic pattern of ignoring recall-required repairs. Electrical damage has cascaded, resulting in a burnt fuse block and active faults P0615, P0617, P26E4, P26E6, U0623, and U0284. More critically, within 24 miles of my last service, the vehicle developed a new, severe safety failure: the \"Service Brake Pad Monitor\" system failed, accompanied by a red \"Service System\" dashboard alert and a noticeably spongy brake pedal. These brakes were recently serviced, yet this failure introduces a new risk of crash not present prior to the recall \"remedy.\" GM Executive Resolution Case XXX has provided no resolution, reimbursement, or safety assurance, ignoring all deadlines since XXX. I possess extensive documentation, including service orders showing deleted labor operations and diagnostic logs. I request this update be integrated into the investigation of RQ26001, as the current remedy is demonstrably ineffective and has exacerbated safety hazards. The manufacturer\u2019s refusal to remediate these issues, despite my compliance, leaves me with an unsafe vehicle and significant financial loss. I am prepared to provide all supporting records to substantiate this complaint. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11749233,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/31/1969","dateComplaintFiled":"07/09/2026","vin":"3GTU9FEL4MG","components":"POWER TRAIN","summary":"transmission shuddering, harsh or delayed shifting, and erratic gear changes. The truck jerks really bad during each shift of the ten speeds. A vibration or shudder typically occurring at speeds between 25-65 mph under light throttle. Also makes a bad noise every times it\u2019s shifting. I have no lights on the dash and the gmc app tells me everything is fine when clearly it\u2019s not . I see there\u2019s a recall for my year and make but for some reason my vin doesn\u2019t fall in the category","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11749076,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/04/2026","dateComplaintFiled":"07/08/2026","vin":"1GTP9EEL3MZ","components":"POWER TRAIN","summary":"My car suffered a catastrophic engine failure, metal schards were found in the oil filter and was left out of the 2021 recall 25V274. The in service date of vehicle is March 13, 2021. The car was 83 days out of warranty when the engine failed. The truck has 47,000 miles on it. They are now trying to charge us, barter with us. They have gone from $2800 for repair, negotiated down to $100 to sign this off as a good will repair stripping us of lemon law rights and future recall remedies. Car is currently sitting at the dealership.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11749124,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/01/2026","dateComplaintFiled":"07/08/2026","vin":"3GTU9DED7MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while turning the ignition on, the \"Service Parking Brake\" message was displayed, and the check engine warning light illuminated. Additionally, the engine ran rough. The vehicle was taken to the dealer, where it was diagnosed that the engine lifters needed to be replaced; however, the dealer could not diagnose if there was further engine damage until the lifter repair was completed. The manufacturer was made aware of the failure. The failure mileage was approximately 72,530.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11748812,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/07/2026","dateComplaintFiled":"07/07/2026","vin":"1GTU9EET7MZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"I own a 2021 GMC Sierra AT4 3.0L Duramax (VIN [XXX]). The vehicle has codes P1098 (Coolant Control Valve Performance) and P129F which coincides with the first code. My dealer believes this is consistent with an Engine Coolant Control Valve failure. I understand Special Coverage XXX exists for this issue, but I've been told my VIN is not included. My truck has the exact engine, symptoms, and diagnostic codes addressed by Special Coverage N252508341, but my VIN is excluded. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11748816,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/07/2026","dateComplaintFiled":"07/07/2026","vin":"1GTU9FEL8MZ","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the \"Add oil to engine\" message was displayed. The vehicle was driven to an AutoZone within two minutes and turned off. Upon inspection of the engine oil level, the contact observed that the dipstick was completely dry. The dealer was notified of the issue, and an appointment was scheduled for an oil consumption test. The vehicle was not yet diagnosed or repaired. The contact stated that the vehicle had been serviced for a routine oil change on April 21, 2026, at 53,590 miles. The contact related the failure to NHTSA Action Number: RQ26001(ENGINE). The manufacturer was not made aware of the failure. The failure mileage was approximately 56,802.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11748623,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/30/2026","dateComplaintFiled":"07/06/2026","vin":"1GTU9FEL6MZ","components":"ENGINE","summary":"Since purchase of my 1500 Sierra 6.2L on 10FEB2021, the vehicle has always appeared to burn an excessive amount of oil which is consistent with GM\u2019s 6.2L engines and has created safety issues leading to sweeping recalls on this engine model from 2021-2024. I have been informed that the engine was consistently down 2+ qts of oil at every recommended oil change (approximately every 5000mi) although GM literature indicated that this level of consumption was usual in their 6.2L engine. In a JAN26 oil change at approximately 35,000mi I was told that my engine was down over 3qts of oil. On 17FEB2026 I took my vehicle into my Chevy/GMC Dealership to request an oil consumption test at ~35, 089mi. On 30JUN2026 I returned to the dealership for my 2000mi check-in, at ~37,800mi, and was informed that my vehicle had failed the consumption test. With over 600,000 vehicles recalled since 2024 in the 6.2L category, my vehicle/VIN has never been associated with a recall. Despite having minimal miles on this engine, I am now financially penalized for repairs because I had just exceeded the initial Powertrain Warranty and my extended warranty would not cover a pre-existing condition. GM\u2019s 6.2L engines have pre-existing issues from the factory and represents a danger to consumers and the driving public because of these failures.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11748647,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/21/2026","dateComplaintFiled":"07/06/2026","vin":"3GTU9FEL8MG","components":"POWER TRAIN,FUEL/PROPULSION SYSTEM","summary":"Dashboard lit up with engine light and stated that there's no compulsion","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11747007,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/26/2026","dateComplaintFiled":"06/28/2026","vin":"1GTU9CET7MZ","components":"STRUCTURE,UNKNOWN OR OTHER","summary":"There is a water leak in the rear passenger compartment of my vehicle. Unsure where water is coming from. Continued leaking poses a risk to my safety as I may be exposed to black mold as well as anyone else who is riding in my vehicle. The problem hasn\u2019t been addressed by the dealer yet but this is a known issue. At this point I have spoken with a representative from the service department at the dealership but cannot get an appointment for several weeks. I was also advised that the problem would need to be diagnosed before being addressed at my cost due to being outside of the warranty period. There were no warning lights or any other signs that this is occurring and was only discovered because I was putting something in the back seat on 6/26/26.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11747060,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/07/2026","dateComplaintFiled":"06/28/2026","vin":"3GTU9CED6MG","components":"ENGINE","summary":"2021 GMC Sierra after purchase at 4,700 miles had issue with the lifter rods and were replaced at that time. Now the truck has a little over 67,000 miles and once again have the same issue. This appears to be a known issue with this truck and the 5.3L engines. The truck is in repair and since it is slightly over its warranty of 60,000 miles. The dealer will not cover the repair. Seeing that this is an ongoing and known issues with service bulletins it seems that this should be a potential recall. We were lucky that we identified the issue early and were able to get to the dealer to fix. Otherwise we could have broken down in the middle of our daily commute in the expressway.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11746746,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2026","dateComplaintFiled":"06/26/2026","vin":"3GTP9EEL9MG","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER,BACK OVER PREVENTION","summary":"When I put the vehicle in park, the dash warning says it is not in park or shift to park. The components continue to work. I have taken it to the dealership and according to the service manger, this is a very common occurrence in these trucks. This seems to me that it would be a very serious safety issue if one assumes their vehicle is in park and it is actually not. The shift to park warning is a safety warning to alert the driver it is not in park so the vehicle doesn\u2019t roll off and hit someone (especially a child playing in the driveway). Assuming that alert is just a malfunction could get someone killed. I did notice that this was considered a safety recall for some models of GMC vehicles but not others. I\u2019m not sure why there hasn\u2019t been a recall on these trucks when the service manager specifically said they are having this issue on a lot of trucks.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11746243,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/10/2026","dateComplaintFiled":"06/24/2026","vin":"3gtu9fet2mg","components":"ENGINE","summary":"My truck went into Reduced Power Mode while driving on the highway (Very Dangerous and life threatening) for a Coolant Control Valve Failure code (P1098), which has been confirmed by a GM dealership. GM already has extended the warranty for Special Coverage N252508341 for selective Vin numbers only and my Vin number is being excluded which isnt safe at all or fair. My truck is a 2021 Sierra Denali 3.0L lm2 duramax and has the same exact problem (coolant control valve failure code), and the same exact faulty part, and the same exact motor (LM2) which directly matches the perimeters for the N252508341 Special Coverage Program but my truck isnt being recalled or covered for repair due to them selectively choosing certain Vin numbers to recall only.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745942,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2026","dateComplaintFiled":"06/23/2026","vin":"3GTU9FEL7MG","components":"ENGINE","summary":"While driving, the vehicle experienced a sudden and momentary loss of power, similar to briefly applying the brakes, after which power resumed. This was followed by a progressively louder squealing noise. I pulled over to investigate, at which point the engine shut off and a low oil pressure warning appeared on the dashboard. The vehicle would not restart. The vehicle was then towed to a dealership, where initial inspection suggested the issue may be related to the L87 recall involving the crankshaft bearing.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745952,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2026","dateComplaintFiled":"06/23/2026","vin":"3GTU9DED8MG","components":"ENGINE","summary":"The AFM caused piston flapping and other major engine problems such as abnormal wear. The problem with the engine could have caused a catastrophic failure along the side of a highway. The problem has been diagnosed and the engine has been replaced at my expense. The repairs were made at a local mechanic shop. The engine would start make a loud ticking noise at 2000 RPM or above. The mechanic shop referred to this as piston flapping. This was caused by inadequate oil pressure at all cylinders due to the Active Fuel Management.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745943,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/12/2026","dateComplaintFiled":"06/23/2026","vin":"","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed, but the vehicle continued to move forward. There was no warning light illuminated. The vehicle was taken to the dealer and was diagnosed with transmission failure. The contact stated that the valve body and torque converter needed to be replaced. The dealer informed the contact that the transmission might need to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 65,561. The VIN was unavailable.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745703,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/18/2026","dateComplaintFiled":"06/22/2026","vin":"3GTU9DET1MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra. The contact stated that while driving at approximately 40-45, the engine warning light illuminated. There was an abnormal sound coming from the fan. The vehicle was taken to the local dealer, where it was diagnosed and determined that the coolant flow valve needed to be replaced. The vehicle was not included in a special coverage program. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 50,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11744992,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/18/2026","dateComplaintFiled":"06/18/2026","vin":"3GTP9EEL5MG","components":"UNKNOWN OR OTHER","summary":"The problem is in the power-locking manual tailgate\u2019s exterior release switch assembly. Water intrusion into the switch can cause a short circuit, leading the tailgate to unlatch while the truck is in Park. Once moving, momentum and air pressure can cause the tailgate to open further, potentially dumping cargo onto the road and creating a hazard.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745145,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/18/2026","dateComplaintFiled":"06/18/2026","vin":"3GTU9FETXMG","components":"ENGINE","summary":"My vehicle began exhibiting symptoms consistent with a failed Engine Coolant Flow Control Valve. The check engine light illuminated, and diagnostic testing indicated a fault related to the coolant control valve system. In addition, I experienced abnormal cooling system operation, including the engine cooling fans continuing to run after the vehicle was shut off. Vehicle was tested few times in Auto Zone These symptoms affected the normal operation of the vehicle and are consistent with the condition described in Special Coverage N252508341. Based on the diagnostic findings and vehicle symptoms, I believe my vehicle qualifies for coverage under this program. I respectfully request that my vehicle be inspected and evaluated under Special Coverage N252508341 and that any eligible repairs be performed according to the terms of the coverage program.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11744736,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/17/2026","dateComplaintFiled":"06/17/2026","vin":"1GTP9EEL6MZ","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"While driving my vehicle, the engine and transmission lost power and the check engine light came on. The vehicle went into limp mode and engine propulsion was limited. Had I been traveling at a faster speed, this would have been very unsafe. After coming to a stop, placing the transmission in reverse did not move the vehicle and there was a grinding noise. I was able to savely move forward in limp mode, but the shifting was harsh. I was able to find an empty parking lot to safely park. The truck was towed to Jim Winter dealership in Jackson MI for inspection.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11744554,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/15/2026","dateComplaintFiled":"06/16/2026","vin":"3GTU9CED8MG","components":"POWER TRAIN","summary":"When pressing on the gas, especially when moderately accelerating, the truck experiences severe shaking, which interferes with acceleration, as well as causing the truck to \"jump\" when the transmission gear \"catches\", even while driving. When the truck is at a full stop and the engine is auto off, when it restarts, it does so frequently when it reengages that it causes a physical \"jump\" in the vehicle, causing the driver's foot to come off the brake pedal. This has been most noticeable since my vehicle hit about 70k miles. I currently have 84k miles. I engaged the dealer and was told the transmission is out of warranty. I see that other GMC Sierra models suffer similar problems and recalls have been issued to GMC that they must repair those vehicles. Despite that, my vehicle is not included in any current recall program.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11744628,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/05/2026","dateComplaintFiled":"06/16/2026","vin":"3GTP9EEL6MG","components":"POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM","summary":"So I made an appointment to have my truck recalled and the Wednesday before I took it, and it cranked no start and I called the dealership. Ask if they had any other those like this and they said that it could be the fuel injector module and so I got it to a mechanic shop to read the codes and it gave me a code p062b and I asked the dealership to look into it and they never figured out what we were not wrong. I just testing the battery. Well, then I got it back after the recall was done and new transmission valve body put in and about 30 miles down the road it started to shake violently and had a flashing engine light so I got it home called the dealership the next morning because they were closed set up another appointment got it to the dealership dealership said it had a couple misfires but since it wasn\u2019t over 100 they weren\u2019t concerned even though I\u2019m pretty sure it is related to the fuel model going out because it has been cranking rapidly whenever I try to start it, but they won\u2019t do anything to figure out what\u2019s wrong?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11744498,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/14/2026","dateComplaintFiled":"06/16/2026","vin":"3GTP8CET6MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the reduced power mode and Check Engine warning lights illuminated. The vehicle was taken to the dealer, where it was diagnosed with coolant control valve failure. The contact was informed that the coolant control valve needed to be replaced. The vehicle was not repaired. The contact was informed that the failure was like the failure description in Special Coverage Bulletin: N252508341. The manufacturer was made aware of the failure but provided no assistance. The contact was informed that the VIN was not associated with the Special Coverage. The failure mileage was approximately 58,500.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11744321,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/08/2026","dateComplaintFiled":"06/15/2026","vin":"3GTU9CETXMG","components":"ENGINE","summary":"Engine Coolant Control Valve Position Sensor Minimum Stop Performance, and Chevy recalled this on this same motor and GMC needs to pays for this as it\u2019s a major problem!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11743882,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/13/2026","dateComplaintFiled":"06/13/2026","vin":"3GTP9EEL5MG","components":"POWER TRAIN,EXTERIOR LIGHTING,ENGINE","summary":"While coasting down or under very light acceleration between 12-20 mph the vehicle has a shudder like driving over a highway rumble strip. While cruising on the highway at 65+ mph, the vehicle has a light shudder or vibration. Vehicle has been checked numerous times for wheel and tire inconsistencies. Brake pads and rotors have also been replaced with no change in issue. Headlights daytime running light changes color from bright white to purple during warm weather. The vehicle has been to 3 different GM dealerships and they acknowledge the issues but do not provide a resolve.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11742782,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/25/2025","dateComplaintFiled":"06/08/2026","vin":"1GTU9DEL9MZ","components":"ENGINE","summary":"While driving home, the engine began to run very rough with decreased acceleration, obvious overall loss of power and a significant amount of white smoke being emitted from exhausts. Several alarm indicators and codes started flashing on instrument panel including Check Engine, Service ESC, Steering Assist Reduced, and Service Parking Brake. Had truck towed to dealership. From Dealership Repair Invoice: Truck scanned with diagnostic codes 0300, 0302 present. Dealership removed right side valve cover and found rocker does not move when engine running. They removed the right side head and found cam and lifter damage. Camshaft, and all 16 lifters were replaced as per document 5659832 under warranty. Labor was 23.3 hours plus 1.2 hours to recover and recharge A/C system.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741852,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/18/2026","dateComplaintFiled":"06/03/2026","vin":"3GTP8BED3MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while The vehicle while operating the vehicle a knocking noise was present coming from the engine and the check engine warning light had remained illuminated. The vehicle was examined by an independent mechanic who diagnosed that the engine valves had malfunctioned and engine needed to be repaired. The vehicle was not yet repaired. The manufacturer was notified of the failure but no assistance was offered. The manufacturer was notified of the failure. The contact was informed that the VIN was not included in the NHTSA Campaign Number: 25V274000(ENGINE AND ENGINE COOLING). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 98,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741938,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/03/2026","dateComplaintFiled":"06/03/2026","vin":"1GTR9CEK0MZ","components":"UNKNOWN OR OTHER","summary":"Vehicle will not consistently shut off. Shift to park error received upon trying to shut vehicle off. Concerns on if the vehicle is actually in park and if it is safe to exit vehicle. Concern that vehicle is not in park and electrical units aren\u2019t being properly shut down (i.e. radio).","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741189,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/29/2026","dateComplaintFiled":"06/01/2026","vin":"3GTU9CET3MG","components":"STEERING,POWER TRAIN,ELECTRICAL SYSTEM","summary":"power steering locked up while driving. multiple dash lights turned on, on its own after the issue, 4wd, emergency brake, abs, and other ones im not sure what they are. took it to the dealership for a recall and told them the issue that happened.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741190,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/29/2026","dateComplaintFiled":"06/01/2026","vin":"3GTU9CET3MG","components":"STEERING,POWER TRAIN,ELECTRICAL SYSTEM","summary":"power steering locked up while driving. has been inspected and repaired by manufacturer. recall.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741277,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/27/2026","dateComplaintFiled":"06/01/2026","vin":"1GTU9FEL3MZ","components":"ENGINE","summary":"Catastrophic engine failure the connecting rod went through the block. It is my understanding that Defective Components: Manufacturing defects in the connecting rods and crankshafts can reduce oil film strength, leading to severe wear, metal debris, and catastrophic engine could be the proiblem","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741078,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/30/2026","dateComplaintFiled":"05/30/2026","vin":"1GTU9FET8MZ","components":"POWER TRAIN,ENGINE,FORWARD COLLISION AVOIDANCE","summary":"The truck randomly will not detect that it was shifted into park. Shifting between gears and back to park does not automatically fix the the issue and has taken up to 10 mins to turn the truck off. The adaptive cruise controls stopped working and can still use regular cruise control. Just not adaptive. It appears greyed out. The truck has thrown the error code: P1098, Engine Coolant Control Valve Position Sensor Minimum Stop Performance. The truck would go into limp mode until the error was cleared. This error has appeared 4 times over the past five months. The most recent date of it happening was today. 06/30/2026","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11740118,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"05/26/2026","vin":"3GTP9EEL4MG","components":"POWER TRAIN","summary":"The truck has a studder that comes from the transmission when at highway speeds. the studder can be felt at random intervals (seconds) from all passengers. The studder is also present on starting up a slope or accelerating from a stop at a slow pace. when accelerating slowly the jerk is more prominent. We have taken it to the GM Dealership, they confirmed the issue was present. The dealership said the GM guidence was to 1st try a re-program and then replace the torque converter. The program flash was unsuccessful, then we paid $4000 to change the torque converter. The Tech stated that this was the GM suggested fix, but noted that we are changing the fluid also which could mask the issue if it is the valve body causing an issue. The replacement torque converter and fluid did somewhat reduce the issue for a short period of about 2 months before it has returned as it did before. The next option from the dealership is in excess of $8,000 for a remanufactured transmission which is outside our reasonable spend, when we dont expect the remanufactured transmission will have any better valve body components. The recent recall did not cover my gas 6.2L sierra 1500, although it clearly is insufficient stating that it just a warning that there is a safety risk present. The valve body of the transmission appears to be an issue across all models and the recall addresses that it is present. We continue to drive this as the primary family vehicle with the hesitation and jerking present as GM dealer offered no support other than $8,000 remanufactured transmission on top of the $4000 we already spent. I believe the recall was insufficent in covering the Gas models with the exact same transmission and known issue. I also believe the offered solution continues to put those driving at risk.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739883,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/24/2026","dateComplaintFiled":"05/25/2026","vin":"3GTP8DED4MG","components":"STEERING,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM","summary":"My truck will not start when I press the push-button ignition. After waiting a few seconds and trying multiple times, it typically starts on the third attempt. Additionally, it will not restart after the auto stop feature activates at stop signs or traffic lights. This is very concerning, especially when pulling into oncoming traffic, as I\u2019m worried the truck could shut off while I\u2019m crossing. I have already had the battery, starter, and alternator checked, and all components tested fine. However, the issue is still occurring. There are also no warning lights or messages displayed on the dashboard.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739728,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/10/2026","dateComplaintFiled":"05/23/2026","vin":"1GTU9CET3MZ","components":"ENGINE","summary":"While driving at normal highway speeds, I got a warning light for engine overheat condition and cooling fans came on. I also got a warning that the engine would go to reduced power. I reported this issue to my local GMC dealer. Was told that this was a comm problem with this engine however: my vin number indicated that this vehicle was not covered under warranty N252508341. I was advised to bring it in for a $250 diagnostic check and repairs could not be made for at least 2 months because of backlog. Took my truck to a local vehicle repair shop where they diagnosed a faulty coolant control valve and replaced it for me for $2388.43. Why did GMC desert me?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739515,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/31/1969","dateComplaintFiled":"05/22/2026","vin":"1GTP9EEL9MZ","components":"STEERING,ELECTRICAL SYSTEM","summary":"Shift to park dings continuously and vehicle won\u2019t turn off draining battery leaving doors unlocked. Don\u2019t want to force into park and break anything more.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11738685,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/22/2026","dateComplaintFiled":"05/19/2026","vin":"1GTP9EEL1MZ","components":"ELECTRICAL SYSTEM,ENGINE,FORWARD COLLISION AVOIDANCE","summary":"2021 GMC Sierra AT4, VIN [XXX] , NHTSA Campaign 25V-274, GM Case XXX. Brake pad monitor failed at 128,923 miles -- 24 miles after leaving Penske Chevrolet (released at 128,899, RO XXX, 04/17/2026). Brakes became spongy immediately following service. Monitor disabled entirely to stop recurring red Service System alert. Root cause is a burnt fuse block ground fault confirmed in writing by two GM-authorized dealers. Ray Skillman (RO XXX, 06/05/2025) documented the fault then deleted Labor Operation 14BUZ ENGINE ELECTRICAL from the recall repair work order. Penske documented verbatim: \"all of these other faults share this same ground circuit.\" The recall repair at Ray Skillman used a remanufactured short block instead of a complete engine per N252494002. The original seized-engine oil pan has never been replaced across three dealerships and 128,000 miles. GM's own Part 573 filing states this defect \"increases the risk of a crash.\" I drove 300 miles on an interstate on 04/22/2026 with active brake warning and no loaner because GM Executive Resolution refused to authorize one. Three GM dealers have inspected this vehicle. GM Executive Resolution Team [XXX] ) has not returned calls or emails and has not confirmed in writing this vehicle is safe to operate. OnStar issued a Critical Alert for P0617 on 04/15/2026. Zero brake faults existed in the 13 months prior to the Penske visit. This is a direct continuation of unresolved electrical damage from a botched federal safety recall repair at 384 days and counting. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11738863,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/19/2026","dateComplaintFiled":"05/19/2026","vin":"1GTU9DET7MZ","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"Coolant Control Valve","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11737211,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"05/12/2026","vin":"3GTU9FEL9MG","components":"POWER TRAIN,ENGINE","summary":"Right after i bought the car I had a very bad misfire on cylinder 1, the car would shake at idle. Took to dealership and they said they replaced all the spark plugs and replaced cylinder 1 coil. about a week later the misfire and shaking started again but this time it would come and go. the check engine light would be on then it would go away for a bit and then come back on over and over again. The only thing that seemed to work is if i disabled the stop and go start system and put the car in L9 to disable the AFM. This seems to work and I have since bought a disabler for these systems. However, there is still a vibration at idle and i feel that its a temporary fix to a bigger issue. This is my daily driver and constantly have my children in the car and just want the car to be safe for everyone. The transmission downshifts rough and at times seems to slip/lock up while driving. I haven't brought it to the dealership for this as of yet.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11737451,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/31/2026","dateComplaintFiled":"05/12/2026","vin":"3GTU9FEL8MG","components":"ENGINE","summary":"Engine has a terrible shake, and I was informed by a mechanic that it has a misfire and no compression in piston number seven","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11736414,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/27/2026","dateComplaintFiled":"05/07/2026","vin":"3GTU9DET5MG","components":"ENGINE","summary":"I have the same model and year for GMC as bulletin 25NA-185, Engine Coolant Control Valve Failures on 3.0L Duramax (Dec 4, 2025), and am experiencing the same exact issue. Apparently my VIN is not included and I can't get an answer from GMC or the local dealer why it's not covered or how to have it reviewed to be added.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11735786,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/05/2026","dateComplaintFiled":"05/05/2026","vin":"3gtu9det6mg","components":"ENGINE","summary":"Coolant control valve not working correctly exhaust fan on high all the time but is never overheating this has been going on for a week it shows there is a 150000 mile warranty on it but not for mine","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11735894,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/03/2026","dateComplaintFiled":"05/05/2026","vin":"3gtp9eed2mg","components":"POWER TRAIN","summary":"Coolant control valve has failed and caused the check engine light to occur is available for inspection. Could cause the car to overheat and cause harm to myself or others Yes has been confirmed by dealer No GM has a special coverage out for the specific vehicle and model years for this vehicle, but are stating that my vehicle does not pertain to that coverage.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11735481,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/03/2026","dateComplaintFiled":"05/04/2026","vin":"1GTP9EED2MZ","components":"STRUCTURE","summary":"The contact owns a 2021 GMC Sierra LD Crew. The contact stated that while driving on the highway at an undisclosed speed, the vehicle's bedrail attachment fully detached from the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unavailable.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11735285,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/26/2026","dateComplaintFiled":"05/02/2026","vin":"3GTU9DET5MG","components":"ENGINE","summary":"Engine coolant control valve needed to be replaced. Special coverage (N252508341) was issued out by GM to fix this problem on 2021 GMC Sierra 1500 vehicles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11734640,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/14/2026","dateComplaintFiled":"04/29/2026","vin":"1gtp9eel8mz","components":"ENGINE","summary":"Driving normal traffic . Started hearing ticking . Check engine light flashing ,service esc and braking system light up. Parking not loud ticking from engine bay","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11733610,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/19/2026","dateComplaintFiled":"04/24/2026","vin":"1GTP9EELXMZ","components":"STEERING,ELECTRICAL SYSTEM","summary":"Driving down road and had total loss of power steering and yes it is available for inspection. Almost drove it off the road due to loss of steering Yes, it happened to be a failed main grounding strap that created the issue. The dealership made the repair. No, it was inspected and repaired by the dealership Yes, started with loss of power steering, then truck died and these codes popped up: Low fuel code, but tank was full; trailer brake system code; side detection code and esc traction control code.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11733285,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/17/2026","dateComplaintFiled":"04/23/2026","vin":"3GTP9EEL4MG","components":"SUSPENSION,SERVICE BRAKES, HYDRAULIC","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while her son was driving 55 MPH and depressing the brake pedal, the vehicle failed to slow down as intended. The driver attempted to use the parking brake to slow the vehicle, but the vehicle failed to slow down. The message \u201cBraking System Failure\u201d was displayed. The driver pulled over to the side of the road, and the passenger\u2019s side front wheel detached and started leaning to the right before the vehicle came to a stop. The driver exited to inspect the vehicle and became aware that the front passenger\u2019s side wheel was lying on the ground. The vehicle was towed to an independent mechanic, but was not diagnosed. The vehicle was then towed to another dealer, where it was diagnosed, and it was determined that the passenger\u2019s side upper and lower control arms, ball joints, rack and pinion, brake rotor and pads, hub, outer tie rod, brake line, speed wheel sensor, wheel and tire, and suspension parts needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 77,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11732929,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/27/2024","dateComplaintFiled":"04/22/2026","vin":"3gtp9eel7mg","components":"UNKNOWN OR OTHER,ENGINE","summary":"Driving and lost all power to truck annd lost control. Was able to coast truck with no accidents. all lights turned on dash board. Engine stating to make horrible noise. Cylinder 1 had a collapsed lifter which cause the failure. They replaced all lifters on the left side. They stated that batch of lifters were faulty. Requested to have the lifters on the right side replaced since they are the same batch but they refused. They would fix once or if they collapse but since they working they would not change them. Called GMC, reported it to them. The three people I spoke with had no idea about lifter problems and it was the first they had heard of it. Multiple complaints have been reported by customers. They did not want to give permission to replace the right side or extend the warranty. When the right side give out, if I am going at high speeds on the freeway, an accident could occur causing injury or death. I know they have a recall on prior GMC but my truck is not included.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11732844,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2026","dateComplaintFiled":"04/21/2026","vin":"3GTU9CETXMG","components":"UNKNOWN OR OTHER","summary":"Engine coolant control valve","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11732548,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/20/2026","dateComplaintFiled":"04/20/2026","vin":"3gtu9eet8mg","components":"UNKNOWN OR OTHER,ENGINE","summary":"Coolant control valve failing. Warranty not covering this part. Seems to be a manufactured issue. Happening on a lot of 2021 GMNC Sierras with the 3.0l Duramax.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11732123,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2026","dateComplaintFiled":"04/18/2026","vin":"3GTP9EED9MG","components":"ENGINE","summary":"My L87 engine has failed due to a manufacturing issue. The recall number for this issue is N252494000. Upon contacting GMC, they state that my VIN number is not included in this recall despite having the same exact issues. I took the vehicle into a mechanic as soon as a problem had arose.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11731720,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/15/2026","dateComplaintFiled":"04/16/2026","vin":"1GTP9EEL6MZ","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"While driving into work, I noticed a knocking sound from the outside of the vehicle. Once parked, upon further inspection I narrowed down the area of the noise to the bottom rear of the engine/front of transmission. Fortunately, I was able to park in front of my office building and wasn\u2019t stranded on the side of the road but under different circumstances it could've been the side of a busy highway or hours from home. I had the vehicle towed to the dealership I originally purchased from, the dealership was able to duplicate the issue with me present. Later that afternoon I was informed that the engine had failed and a replacement would be ordered. There was no prior indication of a problem or warning/CEL\u2019s. The engine failed after the dealership had completed the engine recall ( pico test and 0-40W oil change ) related to the vehicle. I am reporting this in hopes that it helps with the investigation. This has been very disappointing for me as I have supported the brand of vehicle for many years. Only to have many issues under 80,000 miles and to lose confidence in the vehicle I purchased and the company.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11730861,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/09/2026","dateComplaintFiled":"04/13/2026","vin":"3GTU9BEDXMG","components":"POWER TRAIN,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving approximately 45 MPH, the transmission inadvertently shifted from drive (D) to first gear. The check engine warning light was illuminated. The vehicle was pulled over to the side of the road and then towed to the dealer, where it was diagnosed, and it was determined that the valve body needed to be replaced. The vehicle was not repaired because parts were not available. The manufacturer was notified of the failure. The failure mileage was approximately 103,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11730203,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/18/2026","dateComplaintFiled":"04/09/2026","vin":"3GTU9FEL3MG","components":"ENGINE AND ENGINE COOLING","summary":"See attached document for complaint. INFORMATION, DETAILS, COMMENTS, DATES, AND NUMBERS ON RECALL 20211500 DENALI Recall Vehicle Information: All models of GM's with 6.2L gas engine (My personal truck I owned} \u2022 Recall date: April 23, 2025 650,000 + GM vehicles with 6.2L gas engine, years 2019-2023 \u2022 Manufacturer Recall Number: N2524944000 (letter issued by State of Washington Dept. of Licensing, PO Box 9020 Olympia, WA. 98507-9020 \u2022 NHTSA Recall Number: 25V274 \u2022 2021 GMC 1500 Sierra Denali, x-tended cab, 4wh dr, 6.2 L gas engine \u2022 Vin #: WITH 6,400 MILES ON MY TRUCK May 15, 2025 \u2022 Went to local dealer, Becker Buick-GMC in Spokane, WA., to verify there was a recall on my truck and vin. #. Confirmed with there service department and sales person Jon Stone. \u2022 I was informed that the Dealership, service dept., and salesman Jon Stone, and Sales Mgr. Cameron could only say the following: \"GMC DOES NOT have the tools made yet to verify if the engine will need to be replaced and would add me too the list and keep me posted.\" \u2022 I was informed at this time that t he issues with the engine were: engine could stop and start again at random; the engine start to smoke and stop; the engine could catch fi re whether it was running or not, or the engine could do ALL THREE things. \u2022 I was told to just keep driving the truck but watch for any of these issues. May 28, 2025 \u2022 Stopped in local dealer, Becker Buick-GMC, again to see if any updates. \u2022 Told GMC still had done nothing to develop the necessary tools to evaluate the engine and had no date to report or share with me on when they co uld. \u2022 Again, I was told to keep driving the truck and if I had a problem, Becker Buick would come and tow me. \u2022 Salespeople did ask if I wanted to just buy a new truck several times. They were impressed my truck only had 6400 miles on it and in such excellent shape. This was to be my retirement truck. June 5, 6, 7, 2025 \u2022 I visited several car dealers in the Spokane, WA. Area. Ford, Chevy, Dodge and Toyota. While looking at new/different vehicles to buy/trade I got much the same responses. \"Sorry, we CAN\" TTAKE YOUR TRUCK IN TRADE, until GM releases it off the recall list and states it is repaired. Everyone was aware of this massive recall by GM. June 18, 2025 \u2022 Not getting ANY ANSWERS, I called GMC Customer Service at 800.462.8782 and spoke with Cust. Service Manager, Brandy. \u2022 After long conversations, Brandy informed me that the tool(s) to check and evaluate the engine had NOT been developed yet and she could not give me a time line as to when that would be. She further confirmed that NO DEALER in the USA had the tools yet, even after I volunteered to drive to one. \u2022 I then said what I was wanting at this point, as their GMC dealer (Becker Buick) had told me to keep driving the truck, was I wanted either a long block engine replacement at NO CHARGE or at minimum and extended warranty of 125,000 miles on the complete engine and running gear. \u2022 I was informed by her that she could not honor either, and that any of her managers would tell me that I had to work directly with my local dealer. She offered no other solutions or advice, other then GMC would keep all the dealers updated on the tools, actions, and results. \u2022 I asked for the phone info and name of the Spokane area rep and requested a meeting with him. I was told I had to do that at local dealer level. June 24, 2025 \u2022 I met with salespeople Jon Stone and his manager to discuss options, if any, that I might have. \u2022 Told them about my full conversation with Cust. Service Brandy and how upset I was. \u2022 She {Brandy) stated that I would need to get the area rep info from them. They said he was due in town the next week and would give me a call so we could have discussions. (NOTE: next week came and went and I did NOT get a call. I was told he had to change his schedule last minute) \u2022 Now, I had two trips coming up in Sept. and Oct. that I was driving the truck to. One in Havasau A:Z.. And","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11729967,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/07/2025","dateComplaintFiled":"04/08/2026","vin":null,"components":"POWER TRAIN,ENGINE","summary":"I have a 2021 GMC Sierra 1500 AT4 3.0L diesel pickup truck with 98,500 miles. The coolant control valve failed on my vehicle and for some reason it is not covered under GM's special bulletin that covers this part 15yr/150,000. Ridiculous.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11729289,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/17/2026","dateComplaintFiled":"04/05/2026","vin":"3gtu9fel0mg","components":"ENGINE","summary":"6.2 lifter failure at 44500 miles","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11729049,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2026","dateComplaintFiled":"04/03/2026","vin":"1gtp9eelxmz","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Began with a misfire on cylinder 5 code P0305. Replaced spark plugs, wires, and coil pack. Misfire still existed. Fuel injector on cylinder 5 was stuck open and had to be replaced. Misfire still existed. No spark from new coil pack on cylinder 5, replaced coil pack connector. Misfire still existed, but lifter tick became present. Removed cylinder head and found exhaust lifter on cylinder 5 was bad and needed replaced. Currently awaiting parts delivery (only available through GM dealer). Have been without vehicle for 7 weeks now. Was told this was most likely related to Active Fuel Management.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11728421,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/31/2026","dateComplaintFiled":"04/01/2026","vin":"3GTP9EEL3MG","components":"ENGINE","summary":"THE ENGINE COMPLETELY SHUTS OFF WHEN I STOP AT A STOP SIGN OR STOP LIGHT. I HAVE BEEN STUCK IN TRAFFIC INTERSECTIONS ON SEVERAL OCCASIONS UNABLE TO MOVE WHEN THE LIGHT TURNS GREEN. EVENTUALLY THIS WILL LEAD TO ME GETTING REAR ENDED AND PUSHED INTO IN THE MIDDLE OF AN INTERSECTION. MY LIFE IS IN DANGER WHEN I DRIVE THIS VEHICLE. I GOT MY ENGINE REPLACED AND STILL THE SAME ISSUE IS OCCURRING WITH THE AUTO STOP AND START SYSTEM.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11728444,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/31/2026","dateComplaintFiled":"04/01/2026","vin":"3gtp9eel9mg","components":"ENGINE","summary":"There is a recall on the 6.2 motor that is in my truck at my last oil change they performed a pico scoop diagnostic on the truck said it passed and gave it the new type of oil and oil cap that was suppose to fix it. Now a couple months later I walk out start my truck to let it warm up and after starting all of a sudden the engine started nocking bad and loss of oil pressure and on dip stick. I looked it up and this is what happens when the engine fails due to the massive recall on the 6.2 engines. I called the dealer and they are having me tow the truck potentially at my expense for them to look at and decide if it falls into the category of the recall after they did the test, and at one point told me that cause they did the test it is no longer recalled. I am being told people who have had the engines replaced because of the recall that the replacement engines have failed as well. I have a 9 month old baby and this left me stranded and unable to pick him up from daycare I had to scramble to find somone able to do so. I'm concerned that this could have happened while driving and having him with me or being left stranded somewhere.I'm glad it didn't happen when I was dropping him off that morning and while I was driving And meanwhile while they look at the issue and decide weather this falls under there recall or not and while it gets repaired I'm left without a vehicle and to be honest I don't feel safe even if they do repair it as there seems to not be an actual fix to the situation. this is unsafe and unacceptable for the price we have to pay for these rigs and the safety regulations and standards we have, how is this even an issue.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11728447,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/21/2026","dateComplaintFiled":"04/01/2026","vin":"1GTU9FEL7MZ","components":"ENGINE","summary":"-The engine in my 2021 GMC Denali 1500 with the 6.2L engine failed its second engine with ~4,000 miles on the new engine. It is currently at GMC dealer waiting for a 3rd new engine. - Fortunately i was parked when the failure happened and the engine locked up. -Dealer confirmed that a valve dropped and damaged the cylinder wall. - There were no warning lamps or other indication that a failure was about to happen. -Current mileage ~91,000. First motor changed ~85,000 due to recall with previous owner.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11728316,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/30/2026","dateComplaintFiled":"03/31/2026","vin":"1gtu9eet2mz","components":"UNKNOWN OR OTHER","summary":"P1098 code coolant control valve fail service bulletin N252508341 my vin not covered but same motor and same part !","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11728402,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/01/2026","dateComplaintFiled":"03/31/2026","vin":" 3GTU9EET7M","components":"POWER TRAIN","summary":"I believe the torque converter is failing. While driving approximately 38 mph and also 48 mph up to 51 mph the vehicle have a vibration feeling like driving on a rumble strip. If you maintain the same speed, the vibration continues if you speed up, slow down, or let off the gas it goes away. There are so many detailed explanations on forums and social media from other customers experiencing the same problem, but not seeing any recall made by GMC.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11727719,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/20/2026","dateComplaintFiled":"03/28/2026","vin":"3GTU9DED8MG","components":"STEERING","summary":"Loss of steering, erratic steering control. Steering locks up","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726627,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/24/2025","dateComplaintFiled":"03/24/2026","vin":"3GTU9EETXMG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving approximately 50-65 MPH on an incline, the contact believed that the transmission was slipping or there was a misfire coming from the engine. The contact stated that the vehicle failed to restart automatically after the engine AUTO Start/Stop system was engaged after a complete stop. Additionally, the contact stated that after driving for a while, the vehicle went into LIMP Mode. The check engine warning light and other warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed. The contact related the failure to GM Campaign Number: N252515590 (Corroded Ground Strap); however, the dealer had informed the contact that the vehicle was not covered because the VIN was not included and there was no warranty coverage on the vehicle. The vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 75,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726731,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/22/2026","dateComplaintFiled":"03/24/2026","vin":"1GT49REY5MF","components":"TIRES","summary":"Tires are LT275/65R20. While driving on interstate at approximately the speed limit and low 80 degree temperatures in South Carolina with proper placard pressure tire inflation checked two days prior, the truck developed a faint vibration which got worse over three or four miles. I slowed my speed and pulled over at next offramp and visually inspected truck for signs of vibration. Including looking over tires. It seemed like a drive line issue, however truck is a 2021 model with only 38,000 miles. After I could not find anything out of place I got back on the interstate to see if problems still existed. I was only traveling at 45 mph and vibration was getting worse, so I tried to slow and make it to next offramp when the driver side tire blew out causing me to have to quickly react to prevent having an accident. The tire tread and multiple parts of the truck inner fender guards and liner were thrown out into traffic and truck bed side is badly damaged. Prior to blow out there were no warnings on the dash board to to indicate any sort of issue and I verified tire pressures when I stopped after the vibration initially set in. The TPMS system was working properly at the time of the blowout. I have the tire if further inspection is warranted. My safety was at risk when tire blew out on the interstate along with vehicles traveling around me to avoid hitting the flying debris and tire tread. Further this was driver side tire and I had to change the tire on the side of the interstate with traffic right beside my vehicle. I called GMC and they said they would do nothing to help because they see tires as a maintenance item and truck is out of warranty period. I am a mechanical engineer having worked many years for major tire company as a tire design engineer. I am very familiar with load ratings, tire wear, life expectancies, and I believe theis tires failed prematurely. I bought this truck new and have always had tires properly inflated a never overloaded.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"},{"type":"Tire","productYear":"9999","productMake":"GOODYEAR","productModel":"GOODYEAR","size":null,"manufacturer":"Goodyear Tire & Rubber Company"}]},{"odiNumber":11726248,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2026","dateComplaintFiled":"03/23/2026","vin":"3gtu9fet8mg","components":"POWER TRAIN","summary":"I've been to the dealership a few times due to the truck jerking violently under very light acceleration when its trying to shift gears. also there was a few times that the rear wheels have locked up while driving.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726343,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/21/2026","dateComplaintFiled":"03/23/2026","vin":"3GTP9EEL4MG","components":"ENGINE","summary":"L87 engine failure 4 months after it passed the recall test. Experienced shuddering and rpm fluctuation with the cruise control set. Was thinking torque converter. Got it replaced under warranty and the the issues were still there. A week after new TC the truck was running very rough driving down the road. Check engine light along with a low oil Pressure warning and Lost all engine power going 60mph. Would not re fire. Had to coast to a stop with no headlights on only fog lights. Truck is at dealership now will be needing a new engine. P0016 engine code. The truck was in the shop multiple times for misfire and rpm\u2019s jumping and cruise control turning off on its own.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726209,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/18/2026","dateComplaintFiled":"03/22/2026","vin":"1GTU9FEL9MZ","components":"ENGINE","summary":"I am filing a complaint regarding a catastrophic engine failure in my 2021 GMC Sierra 1500 equipped with the 6.2L V8 engine. While driving under normal conditions, the engine suddenly failed without warning and threw a connecting rod, rendering the vehicle inoperable. There were no prior warning signs such as knocking, overheating, oil pressure issues or even a check engine light. The vehicle has been properly maintained, including regular oil changes using manufacturer-recommended 0W-40 oil. This failure created a serious safety concern due to the sudden loss of power while driving, which could have resulted in a dangerous situation, especially at highway speeds or in traffic. I am aware that General Motors has issued a recall and/or is aware of similar failures involving the 6.2L engine in certain 2021 vehicles. However, my vehicle\u2019s build date falls just outside the currently defined recall range, despite experiencing the exact same type of catastrophic failure described in those cases. My build date is 12/20 and the recall was issued for 3/21. Given the similarity of this failure to known issues, I believe this defect extends beyond the currently identified recall population. This raises concerns that additional vehicles, including mine, are at risk of sudden engine failure without warning. I am requesting that National Highway Traffic Safety Administration investigate this issue further and consider expanding the recall to include additional affected vehicles outside the current build date range.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725796,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/24/2026","dateComplaintFiled":"03/20/2026","vin":"3gtu9cet7mg","components":"POWER TRAIN,FUEL/PROPULSION SYSTEM","summary":"The DEF tank in my truck is defective and its the second time in the last 14 months it has broke. The part is now back ordered and according to the dealership this is a nationwide issue regarding these specific trucks. I have contacted around 10 dealers in my area and all tell me the same thing that they have multiple trucks waiting on the same issue. I have not had my truck for over 2 months and have no idea when i will be getting it back due to dealership having no idea when the part will be released due to the back order. This seems to a huge issue with these trucks and GM is doing nothing to help resolve it. I've reached out to GM directly and get no assistance and now have made 2 payments on my truck and the dealership refuses to give me a loaner vehicle. i am looking for some help or relief on what to do to go about my issue","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725695,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/17/2026","dateComplaintFiled":"03/19/2026","vin":"3GTU9DELXMG","components":"UNKNOWN OR OTHER","summary":"When my android auto does not connect, it essentially disables the whole infotainment system which is incredibly distracting and dangerous while driving. I am requesting that this be fixed so that I can still use some of the infotainment system but they are redusing to to do anything to fix the issue. The dealer has advised that they are unable to fix the issue because it is software related but yet the software team is saying it is a dealer issue. Please help me get a resolution to this issue!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725266,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/25/2025","dateComplaintFiled":"03/18/2026","vin":"3GTP9EEL3MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that on Aug. 14, 2025, the PICO engine test was completed on the vehicle under NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The dealer stated that the engine had passed the test, and the engine oil was changed to a higher viscosity oil, and the oil cap, oil filter, and the page in the Owner\u2019s Manual were updated. The contact stated that the vehicle was making abnormal sounds while idling, and the fuel consumption had increased. The dealer was contacted and advised the contact to bring the vehicle back to have the engine test performed again; however, the contact refused. The vehicle was not repaired. The contact stated that the engine test had not been performed on the vehicle and that the vehicle was unsafe. The manufacturer was informed of the failure and informed the contact that the vehicle was repaired. The failure mileage was approximately 44,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725006,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/28/2021","dateComplaintFiled":"03/17/2026","vin":"3GTP9EEL8MG","components":"ENGINE","summary":"at roughly 5,000 miles had lifter failure which caused loss of power. That was repaired under warranty. Same issue at 86,000 miles - loss of power. New engine which I had to pay for. Same issue at 126,000 miles. New engine required. Covered under warranty. Side note. New engine will only have balance of warranty from 2nd engine or about 5,000-6,000 miles. first incident Feb 2001, second incident about Nov 2004, third incident Mar 2026.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11724712,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/13/2026","dateComplaintFiled":"03/16/2026","vin":"1GTP9EELXMZ","components":"ENGINE","summary":"Loss of power, and knocking from the engine while driving. Check brake system, check srs, check parking brake and check engine light flashing came on at the same time. The problem has been reproduced at a mechanics shop and has been determined that cylinder 6 is dead.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11723255,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/27/2025","dateComplaintFiled":"03/10/2026","vin":"3GTU9FEL8MG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"Following the remedy of the engine recall in 2025, the truck started having intermittent electrical issues (i.e. warning lights on dash turn on/off: service 4WD, Loss traction Control, etc) come one while the truck is being driven. If the truck is turned off while the dash warning lights are on, it will NOT Start for about 24 hours. If the warning lights are ignored, eventually they will go off on their own. Additionally, the truck is having \"no-start\" problems (randomly the truck does not start, then after a few days it starts). A New development, when backing up there is a scraping/squealing sound (possibly universal joint). Truck has been back to the dealership that replaced the engine block for the recall and they have failed to identify any issues as these problems are intermittent. Engine Recall Replacement Invoice (Attached)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11723154,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/08/2026","dateComplaintFiled":"03/09/2026","vin":"1GTP9EEL7MZ","components":"ENGINE","summary":"Took it to dealer for engine sound said nothing was wrong 4 days later rod bearing went out while driving. Truck no longer able to drive","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722805,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/21/2025","dateComplaintFiled":"03/08/2026","vin":"3GTU9BED6MG","components":"UNKNOWN OR OTHER,ENGINE","summary":"[XXX] we bought our 2021GMC Sierra 1500 from Dealer with 39842 on it. we drove the truck 2910 miles when we checked the oil it was 2 quarts low at 42752. we added oil at that time and called our local dealer to make appointment . appointment at Bowser route 51 Pleasant Hills PA 15236 They informed us they would have to charge us for an oil change to start an oil consumption test on 10/23/25 miles 43829. 11/24/25 brought back to Dealer they said the oil was full yet i checked it in morning it was1/4 low. 1/7/26 brought back to dealer this time they let our truck sit over night the best way to check it and found it to be 3/4 low with only 1,698 miles driven also the antifreeze reservoir was low also they topped off both. 3/8/26 I Checked it ,its now 1 quart low with 1,097 miles driven milage on truck now is 46,623. Summarize GMC will not even look into why my truck is using oil not once my truck is still under warranty where is the consumer protection. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722817,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/03/2026","dateComplaintFiled":"03/08/2026","vin":"3gtp9eel8mg","components":"POWER TRAIN,ENGINE","summary":"Driving down the road and engine shut off and would not start back. Had it towed to dealer and it needed a motor replacement. Waited over a month for the shop to finish it. New motor has 3k miles on it and is making noise, transmission is stuttering hard and the air conditioning quit working all around the same time. Had to take the truck back to the dealer after the replacement motor was installed because of a faulty \u201cnew\u201d starter.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722823,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/13/2026","dateComplaintFiled":"03/08/2026","vin":"1gtu9ced6mz","components":"SUSPENSION,POWER TRAIN","summary":"Transmission Shuttering which was confirmed from from GMC dealership , but refused to do any repairs after confirmation or diagnostic and test driving. Demanded a 220$ fee be paid before releasing my vehicle back. Also gave GMC Bulliten # 25-NA-148 which states the same issues I'm currently having.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722653,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/27/2026","dateComplaintFiled":"03/07/2026","vin":"1GTR9CED7MZ","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"Rear tailgate on my 2021 Sierra opens or drops when wet. This seems to only happen in a heavy rain or after a truck wash. This problem has been recognized by the manufacturer and the dealer. There is no warning other than the constant clicking of the electric switch allowing the tailgate to drop. This problem has been recalled on the 3/4 & 1 ton trucks but not the 1/2 ton. The tailgate and switches are the same on all 3. Because my vin# does not show for this recall I had to pay for the replacement","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722468,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/08/2025","dateComplaintFiled":"03/06/2026","vin":"1GTR9CED3MZ","components":"POWER TRAIN","summary":"The valve body failed, brought it in to a GMC dealership 3 months ago they told me the valve body is on back order. Last week they received the new valve body installed it and tried to program it. While programming it, the brand new valve body failed. So now I am stuck again with no ETA of when a new valve body will be sent to the dealership to fix the issue. this is obviously an issue with the make and model and in my opinion should be a recall. I do not feel safe if I ever get my truck back from this issue due to ongoing valve body failures nation wide and two on my end.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722534,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/05/2026","dateComplaintFiled":"03/06/2026","vin":"1GTP9EEL6MZ","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Engine developed a low knock type noise just above idle while beginning to move in the parking lot. It was also noted pulling away from an intersection at low rpm under light acceleration. Oil pressure was normal, 30 psi and approximately 50-60 at cruising speed. Low level knock began earlier in the day but no other symptoms. Oil level was checked and found to be at proper level. At mile 2 into my trip a chirping/ squeak type noise was heard under light throttle and light load at approximately 1500 rpm. The noise stopped when accelerator was released. Rough running sensation followed the noise under the load. Noise returned when the accelerator was pressed and then the engine stopped running while traveling 45-50 mph. Placed the shifter to neutral and attempted to restart, engine rolled slowly for a brief moment and then locked up entirely. Starter only clicks when attempted after that. Vehicle left me stranded with no heat on the shoulder of the highway in the dark in Northern Michigan on March 5, ambient temp was 28 degrees. Vehicle towed to closest dealership which is also where it was purchased for inspection on 3/6/2026. General motors customer care contacted and case opened. No assistance with repair at time of callback.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722047,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/04/2026","dateComplaintFiled":"03/04/2026","vin":"3GTP9EEL4MG","components":"POWER TRAIN","summary":"With the cruise set at 55-60 mph the Rpms will jump, along with a slight shudder feeling. Cruise control has turned off a few times due to this. Cruise set at 25mph and would shudder/lunge forward. Torque converter is showing it\u2019s slipping and will need replaced. No check engine lights.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11721466,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/02/2026","dateComplaintFiled":"03/02/2026","vin":"1GTR9CED6MZ","components":"POWER TRAIN","summary":"Per GMC dealership, this vehicle suffered a Transmission valve body failure and they are recommending replacement of the entire transmission.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11721586,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/16/2026","dateComplaintFiled":"03/02/2026","vin":"1GTU9EET0MZ","components":"POWER TRAIN","summary":"My vehicles transmission is part of a recall but my vin is not registered for this recall repair. Please assist.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11720586,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/09/2025","dateComplaintFiled":"02/26/2026","vin":"1gtu9eet3mz","components":"POWER TRAIN","summary":"Engine coolant control valve failure. This is a widespread issue on 2020-2022 3.0L Diesel trucks and it hasn\u2019t been addressed by GM, leaving owners to pay out of pocket for a faulty part.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719804,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2025","dateComplaintFiled":"02/23/2026","vin":"3GTU9DEL6MG","components":"POWER TRAIN","summary":"Vehicle began to slip or shift hard when putting it in gear or coming to a stop. The next morning the vehicle would not move when put in drive or reverse.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719556,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/09/2026","dateComplaintFiled":"02/21/2026","vin":"3GTU9FEL5MG","components":"POWER TRAIN,ENGINE,BACK OVER PREVENTION","summary":"I was driving on a highway on my way home from work. Thank god there was not a lot of traffic because my truck just shut off lost all power, then I received a message on the dash to put on neutral and restart. I tried multiple times to turn it back on. It never turned on and had to get it towed to nearest dealership. It took them a week to inform that the engine locked up even though I tried to take it for the recall they told me to wait and reschedule the appointment. Never got a new appointment until the engine failed and I got it towed to the dealership and have also not received a new kind of loaner from GM. This will be my last GMC truck I purchase.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719314,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/13/2026","dateComplaintFiled":"02/20/2026","vin":"3GTU9DETXMG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while operating the vehicle, the check engine warning light illuminated and remained illuminated. While driving at various speeds, the vehicle entered LIMP Mode, causing the vehicle to decelerate. Additionally, the radiator fan was continually activated while operating the vehicle. The vehicle was taken to the local dealer, who diagnosed that the coolant control valve was inoperative and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 119,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11718970,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/15/2025","dateComplaintFiled":"02/18/2026","vin":"3GTU9EET1MG","components":"ENGINE","summary":"The failed component is the engine coolant control valve on a 3.0L Duramax truck. The failure has been documented and confirmed by both an independent mechanic and an authorized dealership. The malfunction creates a significant safety hazard. Without warning, the truck will suddenly enter a reduced engine power mode while traveling at normal highway speeds. When this occurs, the vehicle will not allow acceleration beyond approximately 50 miles per hour. This is especially dangerous when operating on roadways with speed limits of 70+ mph, as the sudden and unexpected loss of power places myself and surrounding motorists at risk. The problem has been reproduced and confirmed by Steele GMC in Round Rock, Texas. In addition, the vehicle has been inspected by an independent mechanic, both of whom verified the coolant control valve failure. Prior to the initial occurrence of the failure, there were no warning signs. Once the malfunction occurred, the check engine light illuminated. General Motors has issued Service Bulletin #25-NA-185 (revised December 4, 2025), which addresses engine coolant control valve failures on 3.0L Duramax vehicles and outlines the proper diagnostic and repair procedures for this exact failure mode. This bulletin applies to 2021\u20132026 3.0L Duramax trucks. Additionally, GM has implemented Special Coverage program N252508341 for 3.0L Duramax coolant control valve failures, which extends coverage up to 15 years or 150,000 miles when diagnostics confirm the failure condition. Despite the fact that my vehicle\u2019s documented failure matches the exact conditions described in the above-referenced service bulletin and special coverage program, I was informed by Steele GMC that my specific VIN is not included in the warranty. Given the documented safety risk, the confirmed diagnosis, and the existence of official GM guidance addressing this precise issue, I respectfully request this be reviewed and appropriate coverage or corrective action be authorized","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11718623,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2026","dateComplaintFiled":"02/17/2026","vin":"3GTU9BET9MG","components":"POWER TRAIN","summary":"I have had shuddering on the highway and a few hard random diwnshifts. Last week I went to start my truck and the transmission started grinding and rattling. I was told after towing to the dealer it needed a transmission due to pump not getting enough fluid and had failed. I was told I needed to pay, even though the part causing the problem had a extended 150,000 miles and the subsequent pump failure is a result of the control valve failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11717579,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/19/2026","dateComplaintFiled":"02/12/2026","vin":"3GTU9DET7MG","components":"ENGINE","summary":"Had a P1098 code. The truck was diagnosed by a certified technician. Found to have a failing coolant control valve. GM has issued special coverage for this known failure. Special coverage is not including the VIN for this truck although it falls in the criteria for model, year, and engine model.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11717252,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/06/2025","dateComplaintFiled":"02/11/2026","vin":"3GTP9GEK9MG","components":"ENGINE","summary":"Engine failure without any warning. Car maintenance was kept up-to-date.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11716982,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/28/2023","dateComplaintFiled":"02/10/2026","vin":"1GTR9CEK3MZ","components":"POWER TRAIN,ENGINE","summary":"The engine has been burning oil since purchased but really highlighted when at 47k miles I got a dashboard message saying \u201creducing power to engine\u201d I checked the oil and it didn\u2019t register in dipstick. I added 3quarts of oil to show up on dipstick. When I changed the oil which I did at my own garage only 2.5qrt came out including what was in filter. It\u2019s since take an average of 2.5qrt between oil change at 7500. Also the transmission is slipping which happened after warranty expired at about 69k miles and I don\u2019t want it to repair or repair until gm fixes these issues which they know are problem in2020-2021 models but they haven\u2019t addressed it. My truck has been serviced at the dealership except fo 3 oil changes. The issue are noted but the answer is car burn oil typically between changes. Yeah they do if it was 20yrs old not 3yrs. The issue lies with GM. It\u2019s Needs to be addressed.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11717091,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/02/2026","dateComplaintFiled":"02/10/2026","vin":"3GTP9EEL1MG","components":"ENGINE","summary":"At 22,000 miles I experienced issues while driving on a 150 mile trip. We frequently take this particular drive. We choose to driver later in the evening to miss commuter traffic. This even we pull over for a late dinner and hear a loud ticking noise while the the truck seems to lose power. I turn the vehicle off and start it again and its worse, it barely idols and shuts down. I'm in a parking lot and drive down the block to a gas station where serves only gas and no mechanics onsite. I turn off the car and wait 5 mins and restart, same results but this time all the warning lights come on. We end up finding a hotel and in the morning i find a Chevrolet dealership down the block, I ask if I can take it in, there the advisor connects to my obd port and says there are many issues and needs to see a mechanic. I manage to get it towed 80's to the original dealership. Advisor says the engine is bad and replaces it. Now my vehicle has 38,000 miles and I run into the same issue, loud ticking sounds and low power. Immediately I drive it home and the next day have it towed to the dealership to have it looked at. The advisor said during their analysis they saw metal in the air filter so another engine has to ordered and installed.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11715464,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2026","dateComplaintFiled":"02/04/2026","vin":"1GTP9EEL1MZ","components":"ENGINE","summary":"Loss of power code p0016 now truck won't start","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11715607,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2023","dateComplaintFiled":"02/04/2026","vin":"1GTU9FEL1MZ","components":"ENGINE","summary":"Burns excessive amounts of oil between oil changes.All cars were covered under the g.M recall mine fell, one month behind.But this motor is the exact motor that has been recalled to put in a heavier weight oil.Please expand the recall.So my truck can go in.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11714339,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/29/2026","dateComplaintFiled":"01/29/2026","vin":"3GTU9FEL0MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 65 MPH, the vehicle was shaking abnormally with the check engine warning light illuminated. The contact pulled over to the side of the road and had the vehicle towed to the residence. The contact referenced NHTSA Campaign Number: 25V274000) (ENGINE AND ENGINE COOLING) as a possible cause for the failure. A dealer was not contacted. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 66,456.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11713162,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/20/2026","dateComplaintFiled":"01/25/2026","vin":"3GTU9DET4MG","components":"POWER TRAIN,WHEELS","summary":"4 months after bring my truck back to the dealership for a body valve issue on the 10 speed transmission. The truck went into limp mode while I was driving.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11713209,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/01/2023","dateComplaintFiled":"01/25/2026","vin":"3gtp9eel8mg","components":"ENGINE","summary":"The oil consumption is abnormal and burns almost 2.5 to 3 quarts between oil changes. This can be a heavy risk to the engine if I don\u2019t check on it every couple weeks. I don\u2019t think after the price I\u2019ve paid for this truck that I should have this concern and this should not be the case","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11713287,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/12/2025","dateComplaintFiled":"01/25/2026","vin":"1GTP9EEL0MZ","components":"ENGINE","summary":"My 6.2 engine locked up and left me stranded. Had it replaced with s new engine on 10/31/2025 and I'm having problems again with it. As well as my 10 speed transmission slipping and hunting for gears","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712819,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/20/2026","dateComplaintFiled":"01/22/2026","vin":" 1GTP9EEL0M","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"On the afternoon of 01/20/26, I was merging onto the highway in my 2021 GMC Sierra 1500 when a loud bang was heard from the engine compartment at approximately 60 mph. Immediately after the ban was heard, several indicator lights on the dashboard were illuminated, including the ESC, check engine light, and parking brake light. A power loss was felt when attempting to accelerate and the banging noise worsened anytime the accelerator was depressed. I was able to drive the vehicle to the nearest GM dealership that coincidentally was at the closest exit off of the highway I was traveling on. The dealership performed diagnostic and determined that the damage was caused due to the ongoing GM recall associated with Safety Recall N252494000. My vehicle had previously been inspected as part of the recall and was found to have passed. Vehicle had been driven approximately 4,000 miles after recall was performed.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712065,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/26/2025","dateComplaintFiled":"01/20/2026","vin":"3gtp9eelxmg","components":"ENGINE","summary":"There is an active recall for the 6.2 L engines, which is what I have and it\u2019s an issue with burning oil and catastrophic engine failure due to rods and bearings. And I just got this vehicle in November and I have already went through 15 quarts of oil in two months so I\u2019m waiting for my engine to blow up going down the road to cause a wreck like has happened to multiple vehicles already and I also have a rod knock now due to this issue so it could be any time now that my engine fails and I end up getting hurt or my family I took it to the Chevy dealership and I have called GM to do an oil consumption test and to put in a claim so that way if it does fail, then it has paperwork to follow, but it is a major safety concern but something needs to be done considering there\u2019s already 600,000 recalls on this issue already there needs to be more for the rest of the people that are having this issue like myself and I\u2019m spending $50,000 on this truck for the engines to fail and me end up dying before something\u2018s done. and it\u2019s also very distracting as you\u2019re driving down the road and your vehicle tells you that you\u2019re low on all so you have to try to find a way to get off the highway to have someone bring you all so you can continue to drive and it\u2019s not just a cordial. It is up to 5 quarts of all at a time.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712235,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/15/2026","dateComplaintFiled":"01/20/2026","vin":"1GTP9EEL7MZ","components":"ENGINE","summary":"For the second time since I have owned the vehicle that was purchased brand new. The engine seized during driving on the highway and began making loud noises that was knocking and jerking the vehicle. The issue occurred initially around 15,000 miles and was diagnosed as lifter failure, was repaired and returned in July 2022. At 64,000 miles on January 15, 2026, while on an interstate the engine did the same thing and the vehicle went into limp mode. It has been diagnosed as lifter failure this second time and is awaiting appropriate repairs. Both incidents put myself in passengers at danger due to the nature in which the vehicle entered limp mode on the highway.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712236,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2026","dateComplaintFiled":"01/20/2026","vin":"1GTP9EELXMZ","components":"POWER TRAIN","summary":"1-At approximately 40,000 miles, my transmission was replaced under warranty. It had been failing since approximately 2000 miles having a very hard time shifting between first and second gear. It was finally replaced at 40,000 miles. 2- At approximately 45,000 miles I took my truck into the dealership for this latest recall on the 6.2 L failure for inspection. Vehicle is inspected and I was told I would need to have an engine replacement. I was told that there was no ETA on when a replacement engine would be available and that I would be contacted when one was. Afterwards I was sent back home in the truck they just inspected for potential engine failure and said had a bad engine. As of now, I\u2019m still waiting on a word of a new engine and my truck is still operating, but leaves me concerned that it could fail at any moment while driving it.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712266,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/20/2026","dateComplaintFiled":"01/20/2026","vin":"1GTP9EEL5MZ","components":"ENGINE","summary":"The engine has a knocking sound. I took it into the dealer and they replaced the exhaust system thinking that was the problem. However, the knocking still happens intermittently. I have video documentation of the noise.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11711286,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/17/2025","dateComplaintFiled":"01/15/2026","vin":"3GTU9DET5MG","components":"ELECTRICAL SYSTEM","summary":"Truck went in service 9/17/2025 because the wheels locked up while driving. Transmission was replaced. Picked up truck and 2 hours later the truck shut off while driving and was started back up and was limp mode. Was told wire chaffing and they taped and rerouted wires. Picked truck back up and next day it did the same thing. Took back to the dealer and they said wires again. They taped wires back up and we picked up the truck. We had it 7 days and while driving down the expressway the whole truck shut off and would not start up again. Clearly that is a safety issue. After sitting on the side of the expressway for 10 minutes it started up again and was in limp mode and taken to the dealer again. I don\u2019t know what has been done to it yet as they are not great at communication but they have had our truck for 4 months minus the 7 days we had it before it had to go back to the dealer.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11710896,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2026","dateComplaintFiled":"01/14/2026","vin":"3GTU9FET5MG","components":"STEERING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 5 MPH, the vehicle lost proper steering ability, and the steering wheel became loose and spun around in a circle. The air bag message was later displayed on the instrument panel. Upon inspecting the vehicle, the contact discovered that the bolt connecting the steering shaft was missing. Due to the failure, the vehicle was towed to a dealer, where the cause of the failure was confirmed. The contact was then informed that there were no recalls or warranties on the vehicle. The manufacturer was notified several times about the failure and agreed that the part should never fail. However, the manufacturer then stated that the owner of the vehicle was responsible for the repair. The vehicle remained with the dealer unrepaired. The failure mileage was approximately 80,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11710140,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/21/2022","dateComplaintFiled":"01/10/2026","vin":"3GTU9DET3MG","components":"LANE DEPARTURE,FORWARD COLLISION AVOIDANCE","summary":"The front camera stopped working, causing the safety systems to shut off. Codes U026A & U0078 \"no communication failure\". The camera was ordered and replaced.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11710153,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/06/2024","dateComplaintFiled":"01/10/2026","vin":"3GTU9DET3MG","components":"SERVICE BRAKES","summary":"Left rear parking brake actuator malfunction. The truck would brake unexpectedly. The brake would not completely release at times. Took it to the dealer on June 6, 2024 and they replaced the rear rotors and pads. I asked them if the parking brake actuator was faulty and may have caused the premature wear. They laughed and said no, it wasn't possible. On Aug 7, 2024 I returned the truck to the dealer with the fault codes C1114 & C060B caused by a failure of the parking brake actuator. It was impossible to use the emergency brakes when the codes were present. For several months after the repair, brake faults would appear and disappear randomly. Took it to the dealer, and they found nothing wrong. Electric-actuated emergency brakes should be illegal.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11710159,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/28/2024","dateComplaintFiled":"01/10/2026","vin":"3GTU9DET3MG","components":"POWER TRAIN","summary":"Unexpected rear wheel lock-up at 29000 miles. While engine braking from highway speed onto an off-ramp at approximately 50 mph, the rear wheels unexpectedly locked up. Due to prior rear brake actuator issues, I suspected the emergency brake had activated without my input. It was only momentary, and no fault codes or warnings were displayed. It happened again under the same circumstances two months later, with no fault codes. On May 9, 2025, the check engine light came on, and I scheduled service. The dealer addressed a recall regarding the transmission by installing software. In August 2025, I received a letter from GM regarding recall N242454440 for excessive wear in the transmission control valve, which was causing rear-wheel lockup. On October 31, 2025, while towing a small enclosed trailer at 70 mph on the highway with cruise control engaged, the truck suddenly decelerated, and I was nearly rear-ended by a semi-truck (no brake lights to warn them). The truck would not go over 50 mph unless I was going downhill. The transmission would not shift into higher gears. I returned it to the dealer, who checked the computer and found no record of the incident, so they said there was no problem. They informed me that the new software was designed to limit the truck's speed if a potential lockup was detected. This recall did not fix the transmission problem or the safety issue. It was simply a way to avoid costly repairs. There is a problem with the physical transmission valve that, for me, resulted in an extremely dangerous situation. The NHTSA needs to take this issue seriously and require GM to replace the prematurely worn valves in the affected vehicles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11709304,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2025","dateComplaintFiled":"01/07/2026","vin":"3gtp9eed8mg","components":"ELECTRICAL SYSTEM","summary":"Muti pro tailgate has electric issues due to moisture. Tailgate will open up driving down the road.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11709135,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/01/2025","dateComplaintFiled":"01/06/2026","vin":"3GTU9FET6MG","components":"FUEL SYSTEM, GASOLINE,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that after driving on a trip, the contact noticed that the vehicle had lost 10 MPG after a software update was performed. The check engine warning light was illuminated. The vehicle was taken to Richardson Chevrolet (3825 S Huron Rd, Standish, MI 48658), who confirmed that the vehicle was working as designed. The check engine warning light was reset. The vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case, and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 57,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708618,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/22/2021","dateComplaintFiled":"01/04/2026","vin":"3gtp8bed3mg","components":"ENGINE","summary":"2021 gmc purchased brand new Truck had complete engine failure lifters and rods were replaced at 7000 miles under factory warranty lost complete engine power GMC says we are not on any recall and they refused to buy back the truck or give me an extended warranty they said this year 2021 with 5.3 doesn\u2019t have engine issues.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708584,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/17/2025","dateComplaintFiled":"01/03/2026","vin":"3GTP9EEL4MG","components":"POWER TRAIN,ENGINE","summary":"I own a 2021 GMC Sierra 1500 equipped with the 6.2L L87 V8 engine and 10-speed transmission. The vehicle exhibits the following issues: Persistent lifter ticking noise audible from the driver-side wheel well, even when the engine is warm. Rough idle that is noticeable at stops and low-speed conditions. Transmission shifting problems, specifically harsh or delayed shifts when downshifting from 3rd to 2nd gear during deceleration. These symptoms raise concerns about potential lifter failure and transmission defects. I am aware of GM\u2019s recall (25V-274) and NHTSA Engineering Analysis EA25007, but my vehicle\u2019s build date (January 2021) currently falls outside the official recall window. Given the similarity of symptoms to those under investigation, I believe my vehicle may be affected by the same defect. Safety Concern: The rough idle and shifting hesitation could lead to unexpected loss of power or unsafe driving conditions, especially during deceleration or merging. Request: Please include this complaint in EA25007 and consider expanding the recall to cover earlier builds. I am willing to provide service records, videos, and additional documentation upon request.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708589,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/22/2025","dateComplaintFiled":"01/03/2026","vin":"3gtp9eel8mg","components":"ENGINE","summary":"Motor was chugging took to a dealership on march 22 was told I had a collapsed lifter I was told my cost would be 4800 gm would cover half which was fine then when the work was done the dealership took it for a test drive while they were on the test drive the motor locked up they originally told me it was a cam bearing later I found out through paperwork that was emailed to me that it was a main bearing which is consistent with the recall but my vin number hasn\u2019t came up it\u2019s a 2021 gmc sierra 1500 with a l87 6.2 and it cost me 6200 I was 10,000 miles out of warranty","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708004,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/15/2025","dateComplaintFiled":"12/31/2025","vin":"1GTU9FEL3MZ","components":"ELECTRICAL SYSTEM","summary":"The Intermediate speed sensor 2 and internal transmission harness failed. The repair was to replace the internal transmission harness and intermediate speed sensor. This vehicle is a 2021 and I was told this was recalled on a 2022 only.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708093,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/03/2025","dateComplaintFiled":"12/31/2025","vin":"3GTU9DEL0MG","components":"ENGINE","summary":"Faulty lifters replaced on passenger side. Had only 25000 miles on engine. GM extended warranty on thousands with this engine but not mine. Have only 28000 miles on truck and just turned 5th year so warranty is void. GM should extend warranty on all vehicles with this engine.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11707208,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/02/2025","dateComplaintFiled":"12/27/2025","vin":"1GTP9EEL6MZ","components":"ENGINE","summary":"TRAVELING ON INTERSTATE GOING AT THE POSTED SPEED LIMIT AND TURNED OFF THE INTERSTATE ONTO MY EXIT TURN AND VEHICLE ENGINE STARTED KNOCKING AND ENGINE SHUT OFF OIL WARNING LIGHT CAME ON ALL WHILE TRYING TO STOP THE VEHICLE AT THE CROSS TRAFFICE STOP SIGHN AND ENDED UP STOPPED IN THE MIDDLE OF ANOTHER HIGHWAY BARLEY MISSING THE CROSS TRAFFIC COMING AT ME FROM BOTH DIRECTIONS. THIS HAPPENED AT I94 AND COUNTY HIGHWAY 34 AT BARNESVILLE MINNESOTA EXIT. THIS SUDDEN ENGINE FAILURE NEARLY KILLED ME AND THE 2 VEHICLE DRIVERS THAT NEARLY STRUCK MY TRUCK FROM BOTH DIRECTIONS. GMC WOULD NOT HELP ME WITH MY REPAIR OF OVER $11000.00 DOLLARS FOR A NEW CRATE MOTOR FROM GMC. SITING MY TRUCK DID NOT FALL UNDER THE L87 RECALL. FAILURE ROD BEARINGS AND CRANK BEARINGS WITH A TON METAL SHAVINGS IN THE OIL AND FILTER. NO WARNING THIS WAS GOING TO HAPPEN. MY TRUCK HAD 95000 MILES ON IT WHEN IT NEARLY KILLED ME AND OTHERS. INDEPENDENT SERVICE CENTER JOHNSONS AUTO REPAIR IN MOORHEAD MN INSTALLED THE NEW CRATE MOTOR FROM LUTHER GMC FARGO ND.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11707131,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/23/2025","dateComplaintFiled":"12/26/2025","vin":"1GTP9EEL1MZ","components":"ENGINE","summary":"Complete engine power loss.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11706467,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/16/2025","dateComplaintFiled":"12/22/2025","vin":"1GTP9EED2MZ","components":"LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that after the vehicle was taken to a local car wash, upon further inspection, the tailgate door had independently unlatched and was open. No warning light was illuminated. In addition, the contact stated that while driving at an undisclosed speed, the local Police Department called about luggage found on the side of the road. Upon further inspection, the contact noticed that the tailgate had independently unlatched and was open. The vehicle was previously taken to a local dealer, where the vehicle was repaired under warranty. The vehicle was taken back to the same local dealer where it was repaired for a tailgate switch failure at the owner's expense. The manufacturer was made aware of the failure. The failure mileage was approximately 30,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11706659,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/13/2025","dateComplaintFiled":"12/22/2025","vin":"3GTU9CET8MG","components":"POWER TRAIN,FUEL/PROPULSION SYSTEM","summary":"Transmission valvebody failure, causing rapid, repeated rear wheel lock ups. Videos can be provided. These happen almost daily at highway speeds. This will cause a very bad accident","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11706051,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/15/2024","dateComplaintFiled":"12/19/2025","vin":"1GTU9DET2MZ","components":"UNKNOWN OR OTHER,ENGINE","summary":"The coolant control valve has failed on two occasions\u2014once during the warranty period and again approximately 18 months later, outside of warranty. Each failure resulted in continuous fan operation and fluctuating engine temperatures. Failed on around June 2024 and again December 17, 2025","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11706098,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/15/2025","dateComplaintFiled":"12/19/2025","vin":"1GTU9DEDXMZ","components":"STEERING","summary":"The power steering on the truck would quit working at times. I made an appointment with a local dealership to have it checked out. I was told the steering rack was binding and would need to be replaced. I was also told there was a two to four week backorder on the parts. As I am trying to back out of my garage to take it to the dealer the steering totally locked up. I called a wrecker to take the truck to the dealer the next day. When the wrecker operator started to load the truck, at first the steering wheel wouldn't turn . Then it broke lose and worked fine. Imagine if I were driving when this on again off again power steering would quit working!! I should also say this truck only has fifty-seven thousand miles on it. Since there is a backorder on these parts it tells me that I'm not the only one that is having this problem. In my opinion this is a very dangerous safety problem and should be a national recall. Thank you","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11705363,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/08/2025","dateComplaintFiled":"12/16/2025","vin":"3GTU9CET0MG","components":"ENGINE","summary":"mechanical and electrical issues with my GMC Sierra Elevation Duramax Diesel, purchased in 2021. Despite multiple dealership visits, diagnostic evaluations, repairs, and software updates, these issues persist and have significantly impacted the reliability and safety of the vehicle. In December 2025, my vehicle was taken to the dealership for diagnostics and a third software update intended to resolve recurring engine-related faults. Throughout 2025, the check engine light illuminated on approximately 30 occasions, confirmed by at-home diagnostic scans. The same diagnostic code related to the 1) SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 2 P2C7A - Engine I 2) Exhaust Gas Recirculation (EGR) Cooler Efficiency Below Threshold P14D9 - Engine has appeared repeatedly since the vehicle was first purchased in 2021. Additionally, on approximately 15 occasions in 2025, the vehicle failed to start. When pressing the ignition button, the engine screeched while attempting to turn over for 20 to 45 seconds, after which the vehicle powered off entirely. After waiting approximately 10 minutes, the vehicle would then start normally. Notably, during these no-start events, no check engine light or diagnostic code appeared, and the engine light and starting failure have never occurred simultaneously. hese same concerns were explicitly explained to service technicians during the most recent recall repair in 2025. I was informed that a software update would resolve the issue. However, the problems have continued. A similar frequency of failures occurred throughout 2024. At that time, GMC advised that the issue was likely the vehicle\u2019s battery. Acting on this recommendation, I had the battery replaced at my expense in October 2024 by the dealership. This repair did not resolve the issue. From the time of purchase in 2021 through January 2024, these same symptoms occurred approximately 10 times, demonstrating a long-standing and unresolved defect.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11704617,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/29/2025","dateComplaintFiled":"12/11/2025","vin":"3GTU9DED2MG","components":"ENGINE","summary":"Had a \"Trans Hot Warning\" light. Dealership said it was internal valve body failure. They said there is recall on this for other engine types even though this is same issue. I think GMC needs to expand their recall.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11704016,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/02/2025","dateComplaintFiled":"12/09/2025","vin":"3GTP9EEL9MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the engine seized. The contact was unaware of a warning light being illuminated. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to the dealer, where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact referenced an unknown engine recall; however, the VIN was not under recall. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to report the failure to the NHTSA Hotline. In addition, the contact was informed that the VIN for the vehicle was a Canadian VIN, and the mileage was displayed in kilometers. The failure mileage was approximately 120,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703710,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/08/2025","dateComplaintFiled":"12/08/2025","vin":"3GTU9FEL0MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact had received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The vehicle was taken to the dealer where an inspection was performed on the engine. The contact was informed that the vehicle had passed the inspection, and the mechanic added a higher viscosity oil, installed an oil fill cap, replaced the oil filter, and updated the Owner's Manual. The contact stated that the remedy failed to address or repair the possible defect with the engine. The contact stated that the remedy resulted in a higher cost for oil changes, and fuel economy had decreased from 21 miles per gallon to 18 miles per gallon. The manufacturer was made aware of the issue and the contact was provided a case number. The contact stated that the vehicle had not been repaired. The failure mileage was unknown.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703733,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/02/2023","dateComplaintFiled":"12/08/2025","vin":"1GT49REY4MF","components":"LANE DEPARTURE","summary":"Vehicle experiences a failure to the Lane Departure Warning and Intellibeam headlamps functions, primarily at night. Trouble first began on 3/12/2023 and has been to two GM dealerships for 11 repairs and the problem is still unresolved. GM Executive Escalations have been opened and the problem is still unresolved. Their response is that 18 vehicles experienced this problem and the resolution was to clean the front windshield and update the camera software. This truck has had the camera replaced and software updated three times by two different dealerships. GM is now stating they are unwilling to resolve the problem any further and they would no longer send any Field Engineers to investigate the problem. I have numerous photos, videos and repair logs from with the problem and resolutions performed. Nature of problem: At night, the indicator button for selecting the Lane Departure Warning will go out. If the button is depressed, a message in the DIC indicates Lane Departure Warning Unavailable and there is no way to activate the LDW. It also causes the Intellibeam headlamps to not work. Any help you can provide is greatly appreciated.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703214,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/21/2025","dateComplaintFiled":"12/05/2025","vin":"3GTU9DED3MG","components":"ELECTRICAL SYSTEM","summary":"experience a automatic OTA update to the info system on my 2021 GMC Sierra(I did not iniciate) which burnt out the radio module which controls the info system. I am being charged $1,300+ for repair due to vehicle being out of warranty(52,000 miles) and no recall on this vehicle model for this issue. GMC does have a recall for this exact issue on the 2021 GMC Tahoe models, but not the GMC Sierra. If the GMC utilizes the same componets for both models of vehicle how doe the recall#N202319250 not cover the exact same issue on both models?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11702889,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/01/2025","dateComplaintFiled":"12/04/2025","vin":"3GTP9EED5MG","components":"ENGINE","summary":"Heard a ticking noise then check engine light started blinking along with service esc and parking brake. Took it to the dealer and I had a bad lifter again. I was previously repair for lifters under warranty a little over 2 years ago.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11702830,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/21/2025","dateComplaintFiled":"12/03/2025","vin":"3GTU9FEL6MG","components":"POWER TRAIN,ENGINE","summary":"On 10/21/2025 as I was traveling on the highway in Kansas at 60 mph, the vehicle lost power and the engine went into limp mode immediately reducing the speed dramatically. Multiple warning lights flashed on the screen. I was able to get the truck to the side of the highway. The vehicle never started again. I was informed by the dealer that the vehicle would need a new engine.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11701928,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/28/2025","dateComplaintFiled":"11/28/2025","vin":"1GTP9EED9MZ","components":"ENGINE","summary":"The engine is knocking and running rough. I took it to Christian Brothers Automotive in Newnan Ga and the advised engine replacement.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11701448,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/06/2025","dateComplaintFiled":"11/25/2025","vin":"3GTU9FEL5MG","components":"UNKNOWN OR OTHER,ENGINE","summary":"I purchased a 2021 GMC Sierra 1500 Denali (VIN: [XXX] ) from J.C. Lewis Ford in Pooler, Georgia. The dealership did not disclose an active federal safety recall (NHTSA Campaign Number: 24V-xxx / GM XXX) related to engine connecting rod and crankshaft defects that can result in sudden engine failure and loss of propulsion. The Blue Certified delivery document they had me sign includes a section requiring disclosure of any open recalls, but they left the recall section blank and checked that all recalls were explained to me. No disclosure of any recall occurred during the sale. The vehicle developed engine problems within days and is currently in GMC service. The nondisclosure put me at risk of driving a vehicle with a known safety defect. I am reporting this as a dealer nondisclosure of a federal safety recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11701251,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2025","dateComplaintFiled":"11/24/2025","vin":"1GTP9EEL8MZ","components":"ENGINE","summary":"The contact's grandson owns a 2021 GMC Sierra 1500. The contact stated that after the vehicle was purchased from a private seller and driven 258 miles, while his grandson was merging off the exit ramp, the engine seized. The low oil pressure warning light was illuminated. The contact stated that the check engine warning light was illuminated prior to the failure. The vehicle was towed to the contact's residence. The contact scanned the vehicle and retrieved DTCs: P0011, P0016, P006DD, and P0521, stored DTCs: P06DD P0011, and permanent DTCs: P0011 and P0016. The engine was replaced by the contact. The local dealer was contacted for parts. No further information was available. The manufacturer was not contacted. The failure mileage was approximately 100,148.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700705,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/13/2025","dateComplaintFiled":"11/20/2025","vin":"3GTU9DET2MG","components":"ENGINE","summary":"I just surpassed my extended warranty (5 year/100,000 miles) by a couple of thousand miles and my coolant control valve has gone out. The problem is so common that the part is on back order for months at a time. GM says that they issued special coverage for 2020-2022 models, but my dealer is telling me that my VIN is not covered. They want to charge me $2,400 to replace it. This is insane. It\u2019s a very common problem that they know about and it\u2019s going to almost break me. We need help!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700059,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/18/2025","dateComplaintFiled":"11/18/2025","vin":"3GTU9FEL9MG","components":"ENGINE,FORWARD COLLISION AVOIDANCE","summary":"ENGINE BURNING OIL AND BLOWING WHITE SMOKE OUT TAIL PIPES. HAVE TO ADD OIL EVERY 1500 MILES OR SOONER IF TOWING. HAS BEEN AN ISSUE SINCE FIRST OIL CHANGE. VEHICLE IS NOW AT 88057 MILES","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699845,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/17/2025","dateComplaintFiled":"11/17/2025","vin":"3GTU9FEL4MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received the recall letter for NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact called the local dealer, who confirmed there was no information from the manufacturer to move forward. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The contact had not experienced a failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699962,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/09/2025","dateComplaintFiled":"11/17/2025","vin":"3GTP9EELXMG","components":"ENGINE","summary":"While traveling to work at 75mph, a sudden an unexpected malfunction of internal engine components caused a loss of propulsion.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699236,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/16/2025","dateComplaintFiled":"11/13/2025","vin":"1GTP9EEL5MZ","components":"UNKNOWN OR OTHER,ENGINE","summary":"I was traveling home from work and lost all power to the vehicle while driving. No warning lights, check engine lights came on. I was able to cross traffic and park it in a business place. I had it towed to a chevy dealership for diagnostic. They said that the timing chain came off and i would need a new engine. I had it towed to a auto mechanic shop for a second opinion and they gave the same result. The vehicle is only 4 years old with 92,000 miles on it. When i lost all power to the vehicle, I did not hear any strange noises.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699295,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/29/2025","dateComplaintFiled":"11/13/2025","vin":"3GTU9DEL8MG","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"I am an active U.S. Air Force member. My 2021 GMC Sierra 1500 failed GM Recall N252494003 on Sept 29, 2025 (L87 engine loss of propulsion). GM states this defect can cause sudden engine failure and loss of propulsion, increasing crash risk. Despite the confirmed failure, Ocean Cadillac (Miami, FL) told me to keep driving the unsafe vehicle and refused all Courtesy Transportation. The Service Manager admitted in writing that the engine failed, the defect can cause loss of propulsion, and the replacement engine is delayed under GM National Control for up to 3 months \u2014 yet they still denied me a loaner or rental. His statements contradict the GM documents he attached: \u2022 GM Bulletin DCS7222 says Courtesy Transportation CAN be provided during L87 recall downtime and dealers MUST consider loaners/rentals. \u2022 GM FAQ N252494002 says Courtesy Transportation IS available for this recall. \u2022 GM FAQ lists recall symptoms (check engine light, hesitation, high RPM, reduced power) \u2014 NOT battery drain. \u2022 GM states: \u201cIf the engine fails, the vehicle WILL lose propulsion.\u201d Ocean Cadillac ignored these rules and put me back on the road in a known unsafe vehicle. As an American manufacturer, GM has a responsibility to protect American drivers. Their failure to follow recall procedures placed me, my family, and other motorists at risk. I request NHTSA investigate whether GM/Ocean Cadillac are complying with recall safety requirements and whether customers are being told to drive unsafe vehicles after confirmed failures.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11698609,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/22/2025","dateComplaintFiled":"11/10/2025","vin":"3GTU9EETXMG","components":"POWER TRAIN,FUEL/PROPULSION SYSTEM","summary":"I was driving on the freeway and my gmc Sierra at4 received a notification that I could could no longer accelerate. I pulled off to the side as safely as I could in a slanted hill in a major freeway with no shoulder. I sat on the side of the road for 45 min and then ran out of diesel gas waiting for the tow truck. We took into gmc and they said nothing was wrong, we were out of gas. But I ran out of gas waiting for the tow truck. The truck never shut off and ac still going, I just couldn\u2019t accelerate. We\u2019ve had the truck in the shop every single month for the past year for sensor issues and replacements and have all the documentation of the last few years of similar issues. No extensions of warranty\u2019s nothing. Well we started to smell something burning this week and now we were told today we have a faulty fuel pump that will cost us $1,000 to fix and is not covered under our warranty. The truck is still under warranty, so why is something in relation to the power train not covered? There is a current t recall on other gmc models of this year for this fuel pump issue and the safety recall is EXACTLY what happened to us on the freeway and the issue we have now. Why has this not been extended to other GMCs????? My entire family could have died on the side of the freeway!!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11697413,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/03/2025","dateComplaintFiled":"11/04/2025","vin":"3GTU9FED5MG","components":"ENGINE","summary":"Took the vehicle to the dealer because of an engine noise. It had issues with the valves knocking when it had around 1000 miles. I took it in and now the truck has around 67,000 miles and I\u2019m being told it needs a new engine because of a bent rod in the engine. I was told that I need a new engine. Previously I had a lot of other issues with the front wheel hubs clicking. But, this truck didn\u2019t even make it to 5 years and now it needs an engine.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11697309,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/20/2025","dateComplaintFiled":"11/03/2025","vin":"3GTP9EEL1MG","components":"ENGINE","summary":"I own this 21 GMC Sierra with a 6.2L. This vin is not part of your current recall. But my truck is at a dealership waiting on a replacement engine. I was told that the engine locked up in the bay. Not sure if any lights came on before the engine failed, the dealer did not go into that much of detail. The truck is sitting outside waiting on the engine, not sure if gm made then do any failure analysis or just said its a 6.2 were sending an engine.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11696993,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/01/2025","dateComplaintFiled":"11/02/2025","vin":"1GTP9EEL5MZ","components":"POWER TRAIN,ENGINE","summary":"My wife was driving at highway speeds with all are kids when the trucks motor suddenly loss all power all check engine lights illuminated and what I'm assuming had major engine failure causing rod knock.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11695909,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/08/2025","dateComplaintFiled":"10/27/2025","vin":"3GTU9DED6MG","components":"ENGINE","summary":"On [XXX], at approximately 15,873 miles and while on the freeway approximately 30 miles from my home, my GMC Sierra 1500 with the L84 engine experienced a failure of the DFM lifter assembly. This required a significant engine disassembly and the replacement of multiple valvetrain components. This repair was performed at Gold Rush Chevrolet in Auburn, CA, as documented in the enclosed service invoice. GM has issued Technical Service Bulletins and product communications addressing similar lifter failures in Gen V small-block V8 engines with DFM/AFM, including Service Update N212353840, PIP5776, #19-NA-219, and related updates. Industry coverage and owner reports and current Class Action Lawsuits indicate that these failures can recur, even after initial repairs, due to the high cycling frequency of the DFM lifters. Given the nature of the defect and GM\u2019s documented acknowledgement of the issue, I am requesting that GM extend the powertrain warranty coverage for the engine and related valvetrain components for a period of 10 years,100,000 miles as a goodwill policy adjustment. A warranty extension would ensure customer confidence and protect against the significant cost of a repeat failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694696,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/22/2025","dateComplaintFiled":"10/21/2025","vin":"1GTU9FEL0MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V27400 (Engine and Engine Cooling). The vehicle was taken to the dealer, where the contact was informed that the vehicle failed an inspection. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. In addition, the contact was advised that parts were not yet available. The contact was advised that it was unsafe to release the vehicle to the contact with the recall unrepaired. The contact was advised that the repair would take two weeks for completion. The contact stated that the vehicle had been at the dealer for more than two months. The manufacturer was made aware of the issue but provided no assistance. The contact stated that he needed the vehicle to use. The contact was advised that the vehicle was number 1,000 on the list for the repair. The failure mileage was 71,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694701,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/07/2025","dateComplaintFiled":"10/21/2025","vin":"3GTP9EEL3MG","components":"ENGINE","summary":"After having transmission issues which was replaced under warranty, within 300 miles, the engine failed. The vehicle has now been sitting at the dealership since October 7, 2025 waiting for a replacement engine. There is no timeline available for the replacement engine as they are currently backordered. Absolutely ridiculous.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694346,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/18/2025","dateComplaintFiled":"10/19/2025","vin":"3GTU9CET6MG","components":"POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE","summary":"I just took my 2021 GMC Sierra 1503.0 Duramax diesel into Faulkner Nissan, today 10/18/2025 m, to have that recall fixed. I picked it up from the dealership and drove about 10 miles before it went into limp mode and reduced power mode while I was driving and started to shift very roughly and I\u2019ve never had any issue like this before they supposedly fix this recall, I think the software patch made it worse in my case. Now my vehicle is throwing a bunch of different transmission error codes, that it has never produced , and it is going into reduced power mode,as I\u2019m driving and going into limp mode as I\u2019m driving, which you never has done before And it feels like it\u2019s stuttering in early gears now and the idle was really rough it didn\u2019t idle at a specific spot it went from 800 to 1300 back down to 800 when it should\u2019ve just been idle at 800. I don\u2019t know what to do. It seems like this recall made the problem worse for me and my truck in this case, I don\u2019t know what to do and I don\u2019t know where to go. I hope you guys can help us. Please make GMC take responsibility Before somebody gets killed. If they haven\u2019t already this issue is extremely DANGEROUS AND I\u2019M SURE IS DESTROYING THE TRANSMISSION. I don\u2019t feel comfortable driving my family in my vehicle anymore because of this issue it is terrifying\u2026.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694348,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/17/2025","dateComplaintFiled":"10/19/2025","vin":"3GTU9CET6MG","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"I was driving at highway speeds probably doing 55 and another vehicle pulled out in front of me forcing me to slow down rapidly. That\u2019s when my wheels locked up and my vehicles wheels locked up in the middle of the highway. Screeching tires, almost like the vehicle went into park for a second. After about two seconds, I was able to continue driving a highway speed no check engine lights no error codes. It felt like I just hit something nearly gave me a heart attack. My family was in the car. It felt like we all almost died. It was terrifying. This transmission issue recall situation has happened to me more times than I can count. Now it\u2019s almost a guarantee that if you have to shift too hard too fast it locks up the differential and it is terrifying. Every time.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694350,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/16/2024","dateComplaintFiled":"10/19/2025","vin":"3GTU9CET6MG","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"This was the first time I had ever experienced the rear differential locking up at highway speeds in my truck. It was probably the day after I bought the truck. I was going down route one southbound going probably around 60 miles an hour and the wheels locked up and the vehicle felt like it was gonna come to a screeching hole. It felt like I hit something And then the wheels unlocked and it allowed me to keep driving. I thought that I might have hit the cruise control button on the steering wheel by accident and chopped it up to operator error which now I know is one of the most dangerous recall issues I\u2019ve ever had to experience or indoor. Thank goodness my family was not with me at the time. But these issues continued on for months\u2026","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11693232,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2024","dateComplaintFiled":"10/14/2025","vin":"3GTU9FEL3MG","components":"UNKNOWN OR OTHER","summary":"The retractable running board on the driver side retracted well my 3-year-old daughter was climbing into the back of the truck. She then fell off and to the ground. On more than one occasion, I was standing on the retractable running board on the driver side. I was buckling my daughter up in her car seat. The running board retracted in without me doing anything. I did not touch the door and had the driver's side driver door and passenger door open at the same time. This has also happened when just the passenger door was open. The running board retracts and knocks my shins into the truck body. This is quite dangerous and could easily cause great harm. I am not the only one with this issue and have read numerous complaints in online forums. I came across a potential remediation of the problem in an online forum. That remediation included disconnecting the rear toes switch that moves the running board towards the back of the truck, allowing a person to easily reach items that have slid all the way to the front of the bed. Since I disconnected that I have not had a problem with the driver side running board. The passenger side running board is not exhibiting this behavior. For clarity, the running boards are the factory installed running boards, not an aftermarket running board. Please get GM to fix this blatantly obvious safety concern. Thank you very much.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11693377,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/10/2025","dateComplaintFiled":"10/14/2025","vin":"1GTU9EET9MZ","components":"POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE","summary":"DTC CODE P1098 PRESENT RELATED TO FAULTY COOLANT CONTROL VALVE ON 3.0 DURAMAX DIESEL ENGIINE. THIS IS A KNOWN ISSUE WITH THIS ENGINE AND IS SUPPOSED TO BE COVERED UNDER THE 100K MILE POWERTRAIN WARRANTY. PREVIOUSLY TOOK VEHICLE INTO DEALERSHIP FOR REPAIR INVOLVING REPLACEMENT OF THE COOLANT CONTROL VALVE BUT WAS TOLD REPROGRAMMING OF THE ECM WAS REQUIRED FIRST STEP PER GM REPAIR BULLETIN. REPROGRAMMING COST ME $195 AND WAS TOLD THIS WAS NOT COVERED UNDER THE 100K POWERTRAIN WARRANTY. NOW, A FEW MONTHS LATER, THE SAME ISSUE AND DTC CODE P1098 HAPPENED AGAIN WHILE DRIVING ON FREEWAY AT FREEWAY SPEEDS AND CAUSED VEHICLE COMPUTER TO LIMIT SPEED OF THE VEHICLE WHICH CAUSED HAZARDOUS SITUATION IN CONSTRUCTION ZONE AS WAS NOT ABLE TO MAINTAIN SPEED OF TRAFFIC WHILE TOWING TRAILER WITH BOAT. I ALSO UNDERSTAND THAT GM HAS ISSUED SPECIAL EXTENDED WARRANTY RELATED TO THIS COOLANT CONTROL VALVE IN SEPTEMBER 2025 WHICH EXTENDS THE WARRANTY COVERAGE UP TO 15 YEARS AND/OR UP TO 150K MILES BUT I WAS TOLD AT THE DEALERSHIP THAT MY VIN# DOES NOT QUALIFY FOR THIS EXTENDED COVERAGE FOR SOME UNKNOWN REASON?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11692524,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/10/2025","dateComplaintFiled":"10/10/2025","vin":"3GTU9EET7MG","components":"ENGINE","summary":"Vehicle showing signs of a failing coolant flow control valve and/orcoolant temperature sensor. - AC takes a long time to cool down - Engine fan will stay on after the vehicle is shut off - I often see the notice of \u201cA/C Off Due To High Engine Temp\u201d From what I can find, this issue I\u2019m experiencing is a known point of failure in this vehicle make/model/year. On 10/10/2025, I took the vehicle to Fountain Buick GMC Service in Orlando, FL. The service manager recognized the symptoms immediately, and even knew right away that the part to fix it was on back order - further bolstering that it is an issue that GM is aware of and deals with regularly. Per the service manager, GM\u2019s initial response was to issue a \u201cpay to play\u201d software update that is covered under the 3yr/36,000 warranty, but not the 5yr/100K. Out of warranty, this \u201csolution\u201d costs $499.99, and has a < 10% degree of success. If the update doesn\u2019t fix the issue, then it would be covered. However, the need for the software update was not communicated to consumers. Regardless, since the issue is not yet severe enough to be recognized via code (despite symptoms, pictures, and video), GM will not take any action under warranty towards fixing it at this time. The vehicle\u2019s 5yr/100K warranty expires on 10/15/2025. If the code throws on 10/16/2025, it will not be covered under warranty, but *may* be covered under dealer assistance. And regardless, the $499.99 charge will apply, independent of warranty coverage. More important than the money is the safety. The engine\u2019s temperature is not being regulated, the symptoms I\u2019m experiencing are terminal, and this issue will not be fixed on its own.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11692234,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/07/2025","dateComplaintFiled":"10/08/2025","vin":"3GTP9EEL3MG","components":"POWER TRAIN","summary":"Transmission on my vehicle has failed three times since I bought the vehicle in October of 2021. Vehicle currently has 39,000 miles. First transmission issue was resolved by the dealership by replacing the transmission valve body. This solved the problem for approximately 12,000 miles. In September of 2025 with 39,000 miles the transmission suffered a catastrophic breakdown which lead to complete transmission replacement. After being \u201cfix\u201d the vehicle suffered another catastrophic transmission failure within 400 miles of the complete transmission replacement. This incident caused the vehicle to shut completely down and I was stuck in the traffic lane of the US Highway. Fortunately my vehicle and I were not struck while waiting 30 minutes for a tow truck. Presently the vehicle is back at the dealership awaiting repair. From my review of available on-line information it appears there are 10\u2019\u2019s of thousands of GMC Sierra pickups with major transmission issues. This needed to be addressed before someone is killed due to the poor quality of these GMC trucks.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11691802,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/04/2025","dateComplaintFiled":"10/07/2025","vin":"1GTP9EEL5MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. While the contact's husband was driving at an undisclosed speed, the contact noticed an abnormally bumpy ride. The contact felt as if the vehicle was driving over rocks. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, parts were not yet available for the recall repair. In addition, the contact stated that the vehicle had been at the dealer for more than two months awaiting parts. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 80,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11691862,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2025","dateComplaintFiled":"10/07/2025","vin":"3GTU9EET5MG","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"I took my truck through a car wash and then parked at my parents house. While the vehicle was parked, the trunk latch kept releasing. The trunk popped open. I left it open but you could hear the latch continually releasing and the lights blinking. This went on for an hour and I was unable to drive home because my trunk kept unlatching! A recall was released for other Sierras but not mine. Please investigate my vin and others that may be affected.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11691205,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/23/2025","dateComplaintFiled":"10/03/2025","vin":"3GTU9AEFXMG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 45-50 MPH, the engine revved and the transmission unintendedly downshifted, causing the vehicle to decelerate unexpectedly. The transmission then seized, and the vehicle skidded. No warning light was illuminated. The vehicle was towed to the dealer, who determined that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 127,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11690774,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2025","dateComplaintFiled":"10/01/2025","vin":"3GTU9CET5MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign number: 24V797000 (POWER TRAIN), and the dealer performed an interim repair on the vehicle. In March 2025 the part was available, and the recall repair was completed. The contact stated that on one occasion, while driving at an undisclosed speed and then coming to a complete stop, the vehicle jerked and the transmission unexpectedly downshifted. The message \u201cLow Power Mode\u201d was displayed on the instrument panel. The vehicle then failed to accelerate as intended while depressing the accelerator pedal. The contact drove to a parking lot and turned off the vehicle. The vehicle was towed to Don Moore Chevrolet GMC, where it was diagnosed with transmission control valve failure. The contact was informed it would be months before the repair could be performed. The vehicle was towed to another dealer, where the transmission control valve failure was confirmed, and the contact was informed there were metal shavings found inside the transmission. The vehicle remained at the dealer unrepaired. The manufacturer was made aware of the failure. The failure mileage was approximately 115,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689547,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/24/2025","dateComplaintFiled":"09/24/2025","vin":"3GTU9AEF0MG","components":"POWER TRAIN,ENGINE","summary":"Constant engine issues, cams, lifters. Transmission problems. These engines in these vehicles need to be RECALLED. I have bought 6 of these trucks and all of them have the same issues. SPENDING 14k on new engines one after another is ridiculous. These are classified as \u201cwork\u201d trucks and can\u2019t handle \u201cworking\u201d\u00a0","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11688270,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/18/2025","dateComplaintFiled":"09/19/2025","vin":"3GTU9FET9MG","components":"POWER TRAIN","summary":"Transmission failure at a little over 120,000 miles while towing a side by side on the highway. This highway has a speed limit of 80 which is dangerous when the vehicle stops working properly for myself and any other drivers in itself. Earlier this year the transmission had been updated due to a recall and was deemed to work good by the dealership but didn\u2019t notice any difference. Had an engine light pop up a couple hours before but no messages or any other signs to inform me of the issue and was still working fine with no struggle until it gave out","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11688167,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/23/2025","dateComplaintFiled":"09/18/2025","vin":"3GTP9EEL1MG","components":"POWER TRAIN","summary":"Torque Converter failure confirmed by dealer: was driving at high way speeds when I noticed a slipping sensation from the transmission upon any sort of acceleration. No warning lights were illuminated or any symptoms leading up to the failure. This could have potentially caused me to lose any form of acceleration that would enable me to get off of the highway or away from a situation requiring sudden acceleration.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11687893,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/12/2025","dateComplaintFiled":"09/17/2025","vin":"3GTU9FEL4MG","components":"SERVICE BRAKES","summary":"The 2021 GMC Sierra 1500 has an Electronic Parking Brake (EPB) that bolts on to the rear calipers. The EPB does not release, in order for service, you have to long press the parking brake, then the truck goes into service mode & will release the brakes for service, some newer models may not have this feature. The vehicle has 36,000 miles on it & the inside rear brake rotors are worn down from the EPB dragging & not releasing as supposed to, causing excessive premature wear & that could cause a safety hazard fleet wide. The EPB should not be in use while the vehicle is moving, but it is coded to not release, meaning whenever you press the brake it never moves back out away from the rotor, causing drag & or even can cause warping of the rotor. I do not understand the thought process in regards to not letting the EPB release, it acts like the screw type caliper that would have the same issues of every time it moves out it will not go in until taken apart & screwed in, again meaning the brake pad is constantly dragging on the rotor which could in turn also affect the miles per gallon. I see the thought process to use EPB as useful but not a good execution by the manufacturer.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11687527,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/16/2025","dateComplaintFiled":"09/16/2025","vin":"1GTU9DEL6MZ","components":"POWER TRAIN","summary":"I have contacted local GMC repair facility (Frank Brown in Lubbock Tx.) about the safety recall on my 6.2 liter engine to attempt to schedule an inspection of my engine and cannot get them to inspect the engine which the recall notice said they would do. They continue to stall and say the inspection isn't approved by GM. I've tried 3 different times to address this isuue without satisfactory results. I recieved the GM safety recall N252494000 notice for my vehicle in May 2025","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11687570,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"09/16/2025","vin":"1GTU9FEL3MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact then received a notice that parts for the recall were available. The vehicle was taken to the dealer, and the contact was informed that the recall remedy was for the dealer to use a higher viscosity oil. The contact expressed concerns that the remedy was not a sufficient repair and that the engine was still vulnerable to failure. The vehicle was repaired under the recall. The manufacturer was not made aware of the failure. The contact had not experienced a failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11687380,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/10/2025","dateComplaintFiled":"09/15/2025","vin":"3GTP9EED5MG","components":"ENGINE","summary":"Engine lifters bent a pushrod and scratched my camshaft in my engine causing me to be stranded with minor children. 3rd time since I bought this in 2021 that I have had engine faults in this truck.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11686554,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/04/2025","dateComplaintFiled":"09/11/2025","vin":"3GTU9FETXMG","components":"STEERING","summary":"My power steering completely failed. This is a safety issue and could have caused bodily harm. I have looked on line and I am not the only one with this issue, and as I investigated it shows that this issue was recall situation on earlier models. My truck is currently in the shop and looks like it will cost $5,000 to do the full repair.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11686255,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/10/2025","dateComplaintFiled":"09/10/2025","vin":"3GTP9BEK7MG","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"I am experiencing a recurring issue with my 2021 GMC Sierra where the dashboard displays a \u201cShift to Park\u201d warning even though the vehicle is already in Park. This typically occurs when I attempt to shut off the vehicle. The doors unlock as expected, confirming the truck is in Park, but the warning prevents me from turning off the ignition immediately. After a few seconds, the warning usually disappears, allowing me to shut off the truck. This issue is more frequent in cold weather, suggesting a temperature-sensitive electrical or mechanical fault. Based on research and community reports, this appears to be a known issue across multiple GM vehicles, often linked to a faulty micro switch or wiring harness in the shifter assembly. I am concerned about the safety implications, especially if the vehicle fails to shut off properly or if the issue worsens over time. GM has not issued a recall for this problem, and I believe it warrants further investigation due to its widespread nature and potential risk.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11686032,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/09/2025","dateComplaintFiled":"09/09/2025","vin":"3GTU9DELXMG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle failed to restart. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); the VIN was included, but parts were not yet available. The manufacturer was not notified of the failure. The failure mileage was 60,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11685727,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/03/2025","dateComplaintFiled":"09/08/2025","vin":"1GTR9CEK8MZ","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 15 MPH, the vehicle briefly jerked and jolted, prompting him to discontinue driving the vehicle. The vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed failures with the output shaft speed sensor and the transmission control module. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 89,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11685257,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/02/2025","dateComplaintFiled":"09/05/2025","vin":"1GTP9EEL0MZ","components":"ENGINE AND ENGINE COOLING","summary":"See attached document for complaint. I am writing as the owner of a 2021 GMC Sierra 1500 equipped with the 6.2-liter engine that has recently been included in a significant recall. I've been advised that the engine may need to be replaced entirely. As you can imagine, this is extremely concerning given the scale of the defect and the vital role this truck plays i'n my dayto- day responsibilities.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11685301,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/25/2025","dateComplaintFiled":"09/05/2025","vin":"1GTU9FEL2MZ","components":"ENGINE AND ENGINE COOLING","summary":"See attached document for complaint.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11684939,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/16/2025","dateComplaintFiled":"09/04/2025","vin":"1GTP9EEL3MZ","components":"ENGINE AND ENGINE COOLING","summary":"See attached document for complaint. This law firm represents [XXX] . [XXX] owns a GMC truck with VIN: xxxxxx which is subject to the above referenced recall. Please accept this letter as Mr. [XXX] 's written complaint due to his dealer's failure to remedy the defect covered under the above referenced recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11684406,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/02/2025","dateComplaintFiled":"09/02/2025","vin":"3GTU9DEL4MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11684278,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/17/2025","dateComplaintFiled":"09/01/2025","vin":"3GTU9FEL8MG","components":"ENGINE","summary":"Complete engine failure on July 17, 2025, related to current recall for defective engine parts on 6.2L V8 L87 engine. Towed to dealer same day. Dealer continues to report no ETA available on replacement engine. Dealer has had possession of my unrepaired truck for 46 days now and counting.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11684017,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/29/2025","dateComplaintFiled":"08/29/2025","vin":"1GTU9FET2MZ","components":"UNKNOWN OR OTHER,ENGINE","summary":"Coolant control valve failure. Instantly reduces power on truck. National back order on parts. No remedy.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11683690,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/10/2025","dateComplaintFiled":"08/28/2025","vin":"3GTU9CETXMG","components":"POWER TRAIN,ENGINE","summary":"Have owned my 2021 GMC Sierra 1500 with the 3.0 Duramax for a year and the check engine light has come on multiple times for a \"Coolant Control Valve\" issue. The truck runs the fans at 100% and puts the truck into reduced power at least once a day. I have read that GM sometimes will not cover this repair under powertrain warranty even though it's an engine problem. Please fix this issue! To answer the previous questions, the coolant control valve is malfunctioning, and the truck is currently at the dealer being inspected. Yes the dealer has said this issue is common on these trucks (confirmed by National GMC in American Fork, Utah). Yes the check engine light has appeared multiple times. These issues started appearing in June 2025","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11681859,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/29/2025","dateComplaintFiled":"08/20/2025","vin":"3GTU9FEL2MG","components":"ENGINE","summary":"I receivd a recall on my 2021 GMC Denali 1500 , 6.2 engine Recall # N252494000. made an appointment with Carroll GMC, at 1455S. Tamiami Trail, Venice , Fl, on 7/29/25 at 11AM. I showed up for my appointment and they denied checking my truck on the recall stating they did not have the remedy to fix the problem so therefore they were not going to check my truck for the recall...... I have a trip coming up and now I a afraid to go on the highway in case my truck loses power and I get in an accident............ MY truck should have been checked for the recall regardless of the remedy to fix it..So at least I know weather it is safe to drive or not","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11681250,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/17/2025","dateComplaintFiled":"08/18/2025","vin":"1GTU9FEL6MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the engine was previously replaced under warranty. The contact stated that the vehicle had been experiencing excessive oil consumption and required three quarts of oil every 30 days. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while driving 70 MPH, the vehicle shuddered abnormally and there was an abnormal metallic sound coming from the engine before the vehicle lost motive power. There was no warning light illuminated. The contact was able to pull over to the side of the road. The vehicle failed to restart and was towed to the residence. The local dealer was contacted and informed the contact that a service advisor would return the call. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 129,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11681463,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/17/2025","dateComplaintFiled":"08/18/2025","vin":"1GTU9DET9MZ","components":"LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while the vehicle was parked, the tailgate opened independently. No warning lights were illuminated. The contact stated that on a separate occasion, while the vehicle was parked at the residence, the contact approached the vehicle and the tailgate attempted to open independently. The contact moved the vehicle and turned off the engine. The tailgate attempted to open independently again. The contact moved the key fob away from the vehicle to prevent the tailgate from opening. No warning lights were illuminated. Most recently, the vehicle was parked at the residence in front of a toolbox, when the tailgate opened independently and dented the tailgate. The contact called the dealer; however, the vehicle was not diagnosed or repaired. Upon further investigation, the contact related the failure to Manufacturer Recall Number: N232426400. The manufacturer was not notified of the failure. The failure mileage was approximately 90,300.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11680911,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/15/2025","dateComplaintFiled":"08/15/2025","vin":"3GTP9EEL7MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11680357,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/16/2025","dateComplaintFiled":"08/13/2025","vin":"3GTU9FEL9MG","components":"POWER TRAIN,ENGINE","summary":"This vehicle experienced catastrophic engine failure while I was on vacation 400 miles from home. I have researched this failure and there is a class action lawsuit against GMC. My truck has been at the dealer for 25 days and still waiting for authorization from Fidelity Warranty Services. Considering it\u2019s such a common problem I feel GMC should be paying for this. At the very least the warranty company is aware of this problem and purposely delaying the authorization to repair. I just bought a new camper which I cannot use. I am fisherman and cannot use my boat. My beach pass is also on the vehicle. So essentially my summer has been ruined by a company that produced a faulty vehicle and didn\u2019t discord this information to me.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11679714,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/08/2025","dateComplaintFiled":"08/10/2025","vin":"1GTU9FEL2MZ","components":"ENGINE","summary":"\u2e3b Background: \u20222021 GMC Sierra Denali \u2013 6.2L V8 \u2022VIN included in GM\u2019s engine defect recall (connecting rod/crankshaft) \u2022Recall status shows \u201cNo current remedy available\u201d \u2022Defect acknowledged by GM can cause \u201cengine damage, loss of propulsion, or complete engine failure.\u201d Timeline of Events: \u2022~1 month ago \u2013 Truck began running rough with noticeable ticking/knocking noise. \u2022Dealer could not schedule appointment for 3 weeks. \u202208/08/2025 \u2013 Dealer inspection confirmed failed lifters and damaged camshaft. \u2022Repair estimate: $9,300 (see attached dealer estimate). Connection to Recall: \u2022Lifter and camshaft are internal engine components dependent on the same lubrication and oiling system as the crankshaft/connecting rods cited in the recall defect. \u2022The defect\u2019s potential to contaminate oil and cause internal engine damage makes this failure consistent with recall-related damage.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11678408,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/05/2025","dateComplaintFiled":"08/05/2025","vin":"3GTU9FEL9MG","components":"ENGINE","summary":"This recall has been coming for some time now its out and GM still has no plan or action. This is our only auto and my understanding if this issue happens it could cause loss of life. I am concerned for my wife driving to work every day and what happens if we want to take a trip. We need resolution on this. Apr 24,2025 Manufacturer Recall NumberN252494000 NHTSA Recall Number25V274 Recall StatusRecall Incomplete, remedy not yet available [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11678503,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/05/2025","dateComplaintFiled":"08/05/2025","vin":"1GTU9FEL5MZ","components":"ELECTRICAL SYSTEM,SEAT BELTS,LANE DEPARTURE","summary":"2021 GMC Sierra 1500 [XXX] miles 36,500. My childs seatbelt does not work and the lane keep assist does not work INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11677738,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/24/2025","dateComplaintFiled":"08/01/2025","vin":"3GTP9EEL3MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed with engine failure. The dealer informed the contact that there was no anticipated date for the recall repair parts availability. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 137,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11677802,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/28/2025","dateComplaintFiled":"08/01/2025","vin":"3GTU9FET0MG","components":"POWER TRAIN","summary":"What component or system failed or malfunctioned, and is it available for inspection upon request? The Coolant Control Valve has stopped working. How was your safety or the safety of others put at risk? While driving the truck can overheat very quickly which can lead to dangerous temperatures as well as cause me to make an emergency stop on the highway to allow the truck to cool down. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, I have discussed with a dealership in person and independent mechanic who have confirmed the issue and confirmed it is a very common issue. So common that the only replacement part for the problem is backordered. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No, they confirmed the issue without inspecting the vehicle because of how common it happens. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warnings before the issue. The issue happened and then the check engine light turned on as well as a \"reduced engine power\" message.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11677217,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/30/2025","dateComplaintFiled":"07/30/2025","vin":"1GTP9EELXMZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000(Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.\u00a0VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11677274,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2025","dateComplaintFiled":"07/30/2025","vin":"1GTU9FEL8MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a\u00a02021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000(Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while driving 30 MPH, there was an abnormal knocking sound coming from the engine compartment, and the vehicle lost motive power. The contact was able to pull over to the side of the roadway. No warning light was illuminated. The vehicle was towed to a dealer, where it was determined that the engine needed to be replaced. The vehicle was repaired. The contact stated that prior to the engine failure, the transmission was replaced. The dealer was\u00a0contacted regarding the recall remedy, but the dealer was unable to provide an estimated time of availability. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 20,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11677390,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/23/2025","dateComplaintFiled":"07/30/2025","vin":"3GTU9DET4MG","components":"FUEL/PROPULSION SYSTEM","summary":"Fuel tank leaking.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676884,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/03/2025","dateComplaintFiled":"07/29/2025","vin":"3GTU9FET4MG","components":"ENGINE","summary":"Coolant Control Valve is faulty. Part number 24001355 for my GMC Diesel Sierra 1500. The check engine light goes on and sometimes the engine power will be cut in half to protect the engine. It can be inspected when needed. My truck cannot go as fast and the Engine fans sound very loud to cool down the engine. I was 3 hours away from my house when this happened the first time and I wasn\u2019t sure I would make it home. I had to let the engine cool down for about 6 hours after I pulled off of the highway. This has happened two times so far and happens when the AC is on and sometimes when you use the remote start it won\u2019t start the truck remotely and the check engine light goes on. The problem started in July 2025 with 51,000 miles. The engine control module code is P1098. I have asked my GMC dealership to look at the issue and they have told me that the part is backlogged for at least 2 months and they will not look at my truck until the part is available. I haven\u2019t had any other issues with the engine so far and this was the first time a check engine light has gone on.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676578,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"07/28/2025","vin":"3GTU9FET4MG","components":"VISIBILITY/WIPER","summary":"My rear electric window is leaking into my back seat area and the ceiling of the truck has water stains. It is coming from the roof and is leaking in 3 different areas. I am afraid I will now have mold in my car and I can\u2019t have my grandchildren in the car to be safe for them. I had it checked at a local GMC dealer and I had to pay for a leak speacialist to verify and they confirmed the window has a leak. The leak started in April 2025 and has slowly gotten worse. The dealership said I will need to replace my back window to fix the issue and gave me an estimate of $1,100 and said my extended warranty will not cover this issue.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676650,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/07/2025","dateComplaintFiled":"07/28/2025","vin":"3GTU9DED7MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving approximately 40 MPH, the check engine warning light started flashing and the vehicle was shaking with a misfire coming from the engine. Additionally, there was black and greyish smoke coming from the tailpipe. The Roadside Assistance request message was displayed on the instrument cluster. The vehicle was taken to a dealer where it was diagnosed with a misfire. The vehicle was not repaired. The vehicle was taken to the residence, but the failure persisted. The vehicle was taken to an independent mechanic to be diagnosed, and it was determined that the lifter had dropped, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676125,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"07/25/2025","vin":"1GTP9EEL5MZ","components":"UNKNOWN OR OTHER","summary":"The plastic frame of the rear sliding window failed. This has allowed water to enter the cabin, which can cause mold and other health issues. This seems to be a common issue with these trucks. My truck has a certified preowned warranty and GMC said they would only cover part of it. They charged me $400 as a deductible, which there should be no deductible per certified preowned warranty. I feel like GMC needs to put out an official recall.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676162,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/25/2025","dateComplaintFiled":"07/25/2025","vin":"3GTU9FEL5MG","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"I own a 2021 GMC Denali with a 6.2L V8 L87 engine and 45,500 miles. I have confirmed the presence of metal shavings in the oil and oil filter, indicating that the engine is beginning to fail. When I took the vehicle to my local dealership, I was informed that there is currently no fix for this issue and was advised to continue driving the vehicle. This poses a serious safety risk\u2014not just to me and my family but also to others on the road. A sudden loss of power could lead to a dangerous accident, and I do not want to be responsible for something preventable that could harm innocent people. My concern is that GM is aware of this engine issue but has instructed me to keep driving the vehicle, despite the known defect. How can GM be allowed to avoid accountability for such a critical safety matter? If a fatal accident were to occur, would the responsibility fall on GM or the NHTSA for failing to act? It\u2019s also troubling that GM continues to profit by selling new vehicles, including the 2025 models, with similar issues, all while neglecting to provide solutions for affected customers like me. I purchased this $80,000 truck in good faith, but now no dealer wants to trade or buy these trucks without me taking a significant financial loss\u2014something GM should be responsible for. As a taxpayer, I find it unacceptable that we bailed out GM in the mid-2000s, yet they continue to disregard accountability for their actions. I urge the NHTSA to take this issue seriously. A specific deadline should be set for GM to resolve this issue, and they should face daily penalties for every day they fail to provide a fix. If no resolution is possible, full refunds should be mandated. Please address this issue promptly, as it affects real people\u2019s safety and financial well-being every day.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676253,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/18/2025","dateComplaintFiled":"07/25/2025","vin":"3GTP9EEL3MG","components":"ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that there was an abnormal change with the RPM. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The dealer received an email from the manufacturer, but the verbiage was incorrect to move forward with the repair. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 39,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11675861,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/23/2025","dateComplaintFiled":"07/24/2025","vin":"3GTU9FET2MG","components":"ENGINE","summary":"The coolant control valve (Part # 24001355) has failed. Apparently this is the case with many vehicles and GM will not/can not get replacement parts. This should be a recall.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11675926,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/08/2025","dateComplaintFiled":"07/24/2025","vin":"1GTU9BET3MZ","components":"ENGINE","summary":"P1098 Code - Coolant Control Valve on/off/on/off.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11676009,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/24/2025","dateComplaintFiled":"07/24/2025","vin":"3GTU9FEL8MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle stalled, lost motive power, with smoke came from the engine compartment. There was no warning light illuminated. The vehicle was towed to the residence. The contact attempted to start the vehicle and noticed a knocking sound coming from the engine with the check engine warning light illuminated. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The dealer was contacted and informed the contact that parts were not yet available. The dealer informed the contact that the vehicle had a Salvage Title and would not be repaired under the recall. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 48,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11675290,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2024","dateComplaintFiled":"07/22/2025","vin":"3GTU9CED1MG","components":"POWER TRAIN","summary":"AT AROUND 60,000 MILES I HAD EXPERIENCED SHUTTERING AND JERKING IN LOW GEARS AND THE VEHICLE SHOOTS FORWARD WHEN COMING TO A COMPLETE STOP. I WAS ABLE TO TAKE THE VEHICLE IN A SHORT TIME AFTER AND I WAS TOLD BY THE DEALERSHIP THAT IT NEEDED A TRANSMISSION FLUSH. I COMPLETED THE FLUSH AND AFTER A WEEK OR TWO IT STARTED DOING IT AGAIN. I TOOK IT TO A TRANSMISSION SHOP AND THEY ADVISED IT IS THE TRANSMISSION VALVE BODY THAT IS BAD. I BELIEVE THIS STARTED HAPPENING BEFORE MY WARRANTY WAS OUT BUT DUE TO ME BRINGING IT IN AFTER THE MILEAGE THEY WOULD NOT HONOR THE WARRANTY. THIS COULD CAUSE MULTIPLE HAZARDS AT STOPS AND WHILE DRIVING. NO WARNING LAMPS OR MESSAGE HAVE EVER APPEARED.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11675155,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/18/2025","dateComplaintFiled":"07/21/2025","vin":"3GTU9DET1MG","components":"ENGINE","summary":"When I started my truck in the morning I noticed the check engine light came on and my engine fan started running really loudly. I shut my truck off and let it sit for 5 minutes and restarted it in hopes the check engine light would not appear. Unfortunately it did come back on and the engine fan began running really loudly again. I drove the truck to the nearest mechanic and you could feel the truck was trying to counter the problem by forcing me to drive it in a lower speed. After taking it to a shop to get it scanned to see what the code was. The mechanic said it was reading code P1006 three times. He said this coolant system and is why my engine fan was triggered to run really loudly. But the engine was not over heating as all other indicators showed that temps were normal. The mechanic believes it could possibly just be a faulty wire. However after talking to GM he said if it is this coolant part that needs to be replaced, it could take up to months to fix as the part is on national backorder. Doing more research, it appears others have had this same problem and GM even knew shortly after this model was released that this would happen.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11675215,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/14/2025","dateComplaintFiled":"07/21/2025","vin":"1GTU9FET0MZ","components":"POWER TRAIN,ENGINE","summary":"The check engine light came on at one point. I took it to figure out why the check engine light was coming on and the scanner indicated that the NOX catalyst was below threshold. I researched it and it is a common issue. The check engine light eventually turned off after a couple of days. About 2 weeks later it came back on. I noticed as i was driving the coolant fans were running at 100% meaning that they were blowing long and hard. So I scanned it and it said that the engine coolant valve was at fault. This is also a common issue with the vehicle, particularly in the 2021 GMC Sierra 1500 3.0 Turbo Diesel. It is a faulty part and it costs thousands of dollars to replace. How can these two issues not be on a national recall by GM? They are too common and very expensive to repair. This issue is so common that now the valve is on a national back order. Meaning the parts may not be available for 30-120 days. The vehicle is not safe to drive with a bad engine coolant valve. I have now a rental car for the past 7 days while my truck sits waiting for a valve to arrive and pay thousands in repair just to drive it again.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11674474,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/18/2025","dateComplaintFiled":"07/18/2025","vin":"1GTU9FEL2MZ","components":"POWER TRAIN,ENGINE","summary":"wn a 2021 GMC Sierra 1500 6.2L (VIN: [XXX] ), which is now experiencing a severe misfire, engine ticking, and diagnostic code P318A. I\u2019ve confirmed this issue is related to GM Recall N252494001 for engine connecting rod/crankshaft failure. However, I\u2019ve been told my VIN has not yet been activated for recall repairs, and both the local dealership and GMC support have refused to escalate my case or offer assistance. This is a known safety issue, and I\u2019m now at risk of total engine failure and significant financial loss while waiting for GM to act. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11673300,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/04/2025","dateComplaintFiled":"07/14/2025","vin":"3GTP9EEL6MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that while driving at approximately 50 MPH, there was a loud squeaking sound coming from the front driver\u2019s side of the vehicle before the vehicle lost power. Simultaneously, the check engine warning light started blinking. The vehicle was pulled over to the side of the road and the sound became louder, before becoming a knocking sound. The vehicle was restarted, and the failure persisted. The vehicle was towed to the residence. The vehicle was not diagnosed or repaired, but a dealer stated that there was as recall associated with the VIN; however, parts were not yet available to repair the vehicle. The manufacturer was not notified of the failure. The failure mileage was approximately 128,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11673334,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/14/2025","dateComplaintFiled":"07/14/2025","vin":"1GTU9FEL3MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The contact stated that while the vehicle was stopped, the vehicle idled intermittently. In addition, an abnormal sound was coming from the left side of the engine. The vehicle was not diagnosed or repaired. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was unknown. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11673425,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/14/2025","dateComplaintFiled":"07/14/2025","vin":"3GTU9DEL2MG","components":"ENGINE","summary":"My 2021 GMC Sierra 1500 with L87 engine, covered by recall 25V274. None of my local dealers are inspecting for this recall. This truck is my daily driver and I routinely drive on interstates for my work. GM has been slow to address this major manufacturing defect and has not remedied the problem. My truck is no longer worth what is was previously and is lowering trade in or sale value. I am requesting that GM buy back my vehicle due to ongoing safety risks and loss of value.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11673218,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/10/2025","dateComplaintFiled":"07/13/2025","vin":"3GTU9FEL4MG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Was informed from by GM that my vehicle is involved with a recall an still hasn't been repaired","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672973,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/06/2025","dateComplaintFiled":"07/12/2025","vin":"3GTU9DEL1MG","components":"ENGINE","summary":"On Dec 27 I noticed a skip in my engine when I started the truck. I took the truck to Cronic Buick GMC on Jan 6 for an inspection. They reported to me that the engine failed.Seized up. I reported the incident to my extended warranty company Warranty Solutions. They refused to do the repair because I was late for an oil change in 2022. After 3 weeks and no cooperation I contacted GM customer service. I was assigned an agent that help initiate the engine repair . The repair was completed on April 12 (3 months after the failure). I paid $4600 out of pocket for a portion of the engine repair .","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672996,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/12/2025","dateComplaintFiled":"07/12/2025","vin":"3GTP9EED9MG","components":"POWER TRAIN,ENGINE","summary":"What component or system failed or malfunctioned, and is it available for inspection upon request? The valvetrain system failed due to broken rocker arms, which resulted in additional internal engine damage. This failure occurred under normal driving conditions. The affected components have not yet been discarded and are available for inspection upon request.How was your safety or the safety of others put at risk? The failure caused sudden engine misfiring and knocking, reducing engine power while I was operating the vehicle. This significantly compromised acceleration and response time, especially during merging and lane changes, which could have led to an accident. Any unexpected loss of power or engine instability at highway speeds poses a serious risk to myself, passengers, and other motorists.Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The issue has been diagnosed and confirmed by an independent certified mechanic, who verified the broken rocker arms and resulting engine damage during inspection.Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has not yet been inspected by the manufacturer, police, or insurance representatives. Only a certified independent mechanic has inspected the failure thus far.Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes. The check engine light appeared and the engine began running rough and producing a knocking sound. These symptoms occurred just prior to the confirmed failure and prompted me to stop driving the vehicle immediately and have it inspected. Given the seriousness of this issue and reports from other GMC 5.3L engine owners experiencing similar rocker arm failures, I urge the NHTSA to investigate this potential defect. It poses a real and significant safety risk.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672673,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/10/2024","dateComplaintFiled":"07/11/2025","vin":"1GTU9FEL6MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000(Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while driving at approximately 60 MPH, the check engine warning illuminated and the vehicle stalled. The contact pulled to the side of the road and attempted to restart the vehicle, but the vehicle failed to restart. The vehicle was towed to the residence. The contact stated that the failure had previously occurred several times while driving. An unknown local dealer was contacted and informed the contact that the recall parts were not available. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted and a voicemail message was left, but the manufacturer had not returned the contact's call. The failure mileage was approximately 70,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672133,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/08/2025","dateComplaintFiled":"07/09/2025","vin":"3GTU9EET3MG","components":"POWER TRAIN","summary":"The coolant control valve is faulty and is on national backorder causing months of my truck sitting in the shop. This is not an isolated issue. GM is claiming it is not covered under warranty, but the part design is clearly a serious issue.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672165,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/09/2025","dateComplaintFiled":"07/09/2025","vin":"3GTU9FELXMG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the vehicle was experiencing rough idling, with the RPM fluctuating while driving. The local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was approximately 32,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672167,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/10/2025","dateComplaintFiled":"07/09/2025","vin":"1GTU9FET5MZ","components":"ENGINE","summary":"Replacement part needed is COOLANT CONTROL VALVE according to diagnostics at local GM dealer service department after noting check engine light was on. YES, it is available for inspection. Told unsafe to drive as it would very likely overheat or worse. It has been in the shop for a month (as of June 11, 2025) awaiting a backordered part, which we\u2019re told is a national backorder. No loaner vehicle available and told by service department that they have had another truck in for same problem for several months and that this problem is very common. PLEASE HELP us with getting the part needed!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11671868,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/20/2025","dateComplaintFiled":"07/08/2025","vin":"1GTU9FEL4MZ","components":"ENGINE AND ENGINE COOLING","summary":"See attached document for complaint.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11671925,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/10/2025","dateComplaintFiled":"07/08/2025","vin":"3GTU9BET3MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 75 MPH, the vehicle jerked and downshifted to overdrive. The message \"Engine Power Reduced\" was displayed on the instrument panel. The driver depressed the accelerator pedal, but the vehicle failed to exceed 4 MPH. The vehicle was taken to the dealer, where it was diagnosed that the valve body failed, which caused the transmission to fail. The vehicle was repaired. While the contact was driving home after the vehicle was picked up, the vehicle jerked and hesitated. The dealer was contacted and informed the contact that if the check engine warning light becomes illuminated the vehicle could be diagnosed. After several days, the check engine warning light illuminated, and the vehicle was taken to the dealer where it was diagnosed that the shutter valve had failed and needed to be replaced. The vehicle was repaired. The contact stated that the failure persisted. The contact received NHTSA Campaign Number: 24V797000 (POWER TRAIN). The vehicle was repaired; however, the failure persisted. The manufacturer was made aware of the failure and offered the contact assistance with the transmission repair. The failure mileage was approximately 119,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11671523,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/15/2025","dateComplaintFiled":"07/07/2025","vin":"1GTU9CET8MZ","components":"ENGINE","summary":"The coolant control valve on my truck is causing issues. From doing research, this is an ongoing issue with the 3.0 duramax. The part is on nationwide backorder and I cannot drive my vehicle in reduced engine power because the only way I can get to work is by taking the interstate. It is madness that GM has not issued a recall or done anything to rectify this issue. Many GMC owners are paying on vehicles that they are unable to drive which is assanine. This part needs to be readily available due to the NUMEROUS complaints that have already been submitted in regards to this part.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11671673,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/03/2025","dateComplaintFiled":"07/07/2025","vin":"3GTU9DEL9MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that upon starting the vehicle, there was an abnormal knocking sound coming from the engine. The abnormal sound ceased once the vehicle had accelerated; however, the abnormal sound returned while the vehicle was idling. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the ball bearing caused a misfire, and two cam lifters needed to be replaced. The vehicle was repaired. The contact picked up the vehicle and on the way home, the engine failed. The contact took the vehicle back to the dealer. The technician test drove the vehicle with the contact as a passenger, and the check engine warning light illuminated. In addition, there was an abnormal sound coming from the engine. The vehicle failed to accelerate as intended while depressing the accelerator pedal. The contact was informed that the engine failed and needed to be replaced along with the fuel body system. The contact was informed that as per GMC, the oil needed to be changed to an oil with a thicker viscosity. The fuel body was replaced, and the oil was changed. The manufacturer was made aware of the failure and offered the contact an amended warranty. The contact was informed that GMC had elected to participate in the procedures under the Song Beverly Act. The failure mileage was approximately 50,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11670922,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/02/2025","dateComplaintFiled":"07/02/2025","vin":"3GTP9EEL9MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that upon starting the vehicle, the vehicle was idling abnormally, prompting the contact to turn off the vehicle. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the lifter in cylinder #4. The contact stated that the lifter had collapsed into the engine, causing damages to the engine and camshaft. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 98,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11670640,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/07/2025","dateComplaintFiled":"07/01/2025","vin":"3GTU9FET7MG","components":"POWER TRAIN","summary":"My 2021 GMC Sierra 1500 Diesel Truck is displaying the Check Engine Light which I was told by the local Mount Vernon GMC Dealership is a failed Temperature Control Valve affecting the transmission. I also get a warning message of \"Reduced Engine Power\". I am told that it is OK to drive the vehicle but at reduced power. The dealership told me they ordered a replacement part which is covered under warranty on May 7, 2025, but showed on \"Back Order\". Every time I call to follow up on the status, I'm told it is still on \"Back Order\", and they cannot do anything to improve the delivery. Why does a customer, owning a \"Denali\" truck under warranty, can't get the problem resolved? I have a recall notice from GMC dated January 2025 about this very problem and have shown it to GMC dealerships during regular services, and still have the problem. Since I have bought this truck, I have experienced a failed right running board that cost $1,500 to repair a few months ago which is failing again. The driver side mirror now vibrates when I put the truck into drive after being in reverse, and I cannot get any idea on when this transmission valve problem will be fixed which is causing me serious delays in using the truck to pull a trailer. Prior to this problem I had the dealership replace my brakes which required 2 follow-up repairs due to the \"GMC original rotors\" being warped that required machining to make them not vibrate which to me, now makes them \"used\". This means I paid full price for \"repaired\" parts! I thought that by buying a GMC \"Denali\" 1500 Sierra truck I was buying the \"top of the line\" in pick-up trucks but now finding out it's a lemon. I love the truck, but not the problems. What do I need to do to get this fixed? [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669912,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/02/2025","dateComplaintFiled":"06/28/2025","vin":"1GTU9FEL2MZ","components":"ENGINE","summary":"It started with a emergency brake light coming on, shortly (2 miles) later it started misfiring on cylinder #1 after replacing coil pack plug wire and plug. It then started smoking bad out of the exhaust. I knew GM was having recalls on the 6.2 engines so I hauled it to the dealer. They told me it was a bad engine and since it had aprox.62,000 miles on it and no recall it wasn't covered. Since then the dealer called the factory service rep. and he agreed to replace the engine at a 50% reduction in the price, but had no idea when they could get me a replacement engine. After a few days of research on my part I called the dealer again to get a price on how much it was going to cost me? The owner of the dealership ask me to give him a few more days to ask the rep. if he would agree to 100%. My problem now is I don't have it to drive, I can't sell it. and no idea how long it will be before it can be repaired. Plus I am still making payments on it. It is available for inspection at the dealer. If I had of continued to drive, it could have locked up causing a catastrophic accident. In my research it looks like these problems started in 2019 not late 2020 when mine was built. NC has lemon law complaints going back to 2019 that have been paid out. I currently own a #1 2007 GMC Yukon Denali 6.2 with aprox.389,000 miles and only replaced the transmission recently. #2 A 2008 GMC Sierra Denali 6.2 with 279,052 miles, new transmission. #3 A 2011 GMC Yukon Denali 6.2 with 234,361 miles and #4 a 2017 Cadillac Escalade 6.2 with aprox. 102,000 miles. All of these are working and driving on a daily bases. I have a lot of faith in these 6.2 engines until now, I will no longer be buying any more of these engines even though 1 out of 5 aint bad. Thank you for your consideration and for what you do. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669496,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/15/2025","dateComplaintFiled":"06/26/2025","vin":"3GTP8DET6MG","components":"ENGINE,ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that occasionally while attempting to start the vehicle, the engine hesitated to turn over. The contact stated that the failure progressed, and the vehicle no longer started as needed. The check engine warning light was illuminated. The contact stated that two local dealers were contacted; however, the contact was advised that to diagnose or repair the vehicle, might take several months. The vehicle was towed to a local independent mechanic, where it was diagnosed with camshaft sensor failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 83,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669124,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"06/25/2025","vin":"3GTU9FEL8MG","components":"ENGINE","summary":"Safety recall, unsafe","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669185,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/25/2025","dateComplaintFiled":"06/25/2025","vin":"3GTP9EEL6MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669296,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/25/2025","dateComplaintFiled":"06/25/2025","vin":"3GTU9FEL9MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The contact stated that while driving 70 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. No warning lights were illuminated. The contact stated that several minutes later the vehicle functioned as designed. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was approximately 38,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11668873,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/20/2025","dateComplaintFiled":"06/24/2025","vin":"3GTU9CET5MG","components":"POWER TRAIN","summary":"In December of 2024 the engine started not being able to reach full power. This would happen intermittently and there would be a check engine light that would come on when this was happening. In January of 2025 I had the code pulled up by a mechanic at a local shop and this mechanic actually spoke to the service manager of the GMC dealership who said it was covered under the 100,000 mile power train warranty. I took it to the dealership who then told me the diesel mechanic was backed up and I would have to schedule repair for February. I had also received a recall notice in the mail for another issue so asked about taking of both things at the same time. I made the appointment for mid-February so had to deal with reduced engine power for several weeks.The dealership had my truck for several days and a recall was fixed and I thought the reason for the reduced engine power had been fixed also. I had received a phone call from the service representative about an issue that would cost over $1200 that I declined. I did not realize that this was actually for the main issue. I was still thinking the reduced engine power was under warranty. I got my truck back but then the next day the check engine light came on again and the engine power was reduced again. I immediately called the service representative who then told me only the recall had been fixed and that the reason for the reduced engine power was not fixed because I had declined the service. I was totally confused and didn\u2019t understand what happened. This is when I was told that the reason for the reduced engine power was due to a coolant control valve, which was not under the powertrain warranty. I pushed the issue and wanted answers as to why the service manager himself told the mechanic that it was under warranty and was told that the service manager is not a technician and they rely on what the technician says is the problem. And this problem was not covered. I finally gave in and got it fixed and paid $1788.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11668912,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/12/2024","dateComplaintFiled":"06/24/2025","vin":"3GTU9CED2MG","components":"UNKNOWN OR OTHER,ENGINE,FUEL/PROPULSION SYSTEM","summary":"Engine experiences missing when accelerating in lower speeds ...also now, and since driving for a few thousand miles, f umes are entering cabin frequently and causing nausea, 'headaches and burning of mouth, lips and eyes .....all the time. My youngest granddaughter got sick and so did my oldest son just this past weekend! As far as I know , police or dealership never inspected , nor did they acknowledge it! No warning lamps appeared","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669035,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/10/2025","dateComplaintFiled":"06/24/2025","vin":"1GTR9CED3MZ","components":"SERVICE BRAKES","summary":"On March 10, 2025, I was driving down a residential street, about 40 mph, when the \"Brake System Failure, 42 miles top speed,\" indicator light came on. Seconds later, I was approaching a stop sign and pressed down on the brake pedal. The brakes failed and the brake pedal went directly down to the floor. Luckily there were no other vehicles around and i was able to coast through the stop sign. I continued to coast until the truck stopped on its own and I was able to shift the gear into park. I've checked for recalls on my truck for this issue and did not find any. There is a similar issue with the GMC 2500 and 3500 series. Perhaps the issue is broader than expected.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11668047,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/20/2025","dateComplaintFiled":"06/20/2025","vin":"3GTP9EED5MG","components":"UNKNOWN OR OTHER","summary":"When I am in park my engine shuts off the light goes from green to orange which indicates it\u2019s still on electrically. I have to turn on/off my vehicle multiple times for it to turn off fully. It\u2019s an intermittent problem.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667767,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/17/2024","dateComplaintFiled":"06/18/2025","vin":"3GTU9FEL1MG","components":"ENGINE","summary":"I heard a ticking in the engine and noticed multiple warning lights in the dashboard. I called the GMC dealer and was told the next opening was several weeks away. I was also told that it would be OK to drive the vehicle which I did (~10 miles) and parked the truck in my driveway until I could get the truck in for a diagnostic evaluation. The service department at the GMC dealer where the vehicle was purchased identified a defective camshaft/lifter as the source of the noise and lights. The service manager recommended either an engine rebuild at their shop or purchase a replacement motor from the GMC inventory network. The serial # of the old motor is: 126852545. The serial # of the new motor is: 40208378. The cost of the new motor, replacement of required fluids and parts and labor was $12,360. 100% of the repair was paid by myself. The .pdf of the service record (RO #: 9189240) exceeds the 10 MB limit and cannot be uploaded. I have a hard copy if needed. The dealership where the vehicle was purchased and serviced is: TULLEY Buick - GMC - BMW - Mazda P.O. Box T 147 Daniel Webster Highway South Nashua, New Hampshire 03060 (603) 888-0550 www.tulley.com","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667847,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/22/2025","dateComplaintFiled":"06/18/2025","vin":"3GTU9CET7MG","components":"POWER TRAIN","summary":"coolant control valve failure activating check engine light, reduced power mode and fan running continuously. Truck has been in the shop for 3 weeks already with no part available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667338,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/17/2024","dateComplaintFiled":"06/17/2025","vin":"3GTU9FETXMG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at various speeds, the check engine warning light illuminated, and the engine fan activated and operated at a very high velocity. Additionally, the message \"Engine Power Failure\" message was displayed, and the vehicle stalled. The vehicle was taken to the local dealer who diagnosed that the engine coolant control valve was faulty and needed to be replaced. The contact was informed that the parts were on backorder and no repairs were performed. The manufacturer was not yet contacted. The failure mileage was 48,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667367,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/17/2023","dateComplaintFiled":"06/17/2025","vin":"3GTU9BED5MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated upon starting the vehicle and shifting to drive(D) in the morning, the transmission hesitated to shift to second gear and then shifted harshly. There was no warning light illuminated. The vehicle was taken to the dealer, where it was test-driven, but the failure could not be duplicated. The contact stated that the failure occurred once a day on first start-up of the vehicle and upon shifting to drive(D). The vehicle was taken back to the dealer over the weekend, and the dealer was able to duplicate the failure on first start-up of the vehicle and upon shift to drive(D). The dealer related the failure to TSB Number: 16-NA-361; and informed the contact the manufacturer had not made a repair available. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to file a complaint. The failure mileage was unknown.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667437,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2024","dateComplaintFiled":"06/17/2025","vin":"1GTV9CET0MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds, the check engine warning light illuminated, and the engine fan activated and operated at a very high velocity. Additionally, the message \"Engine Power Failure\" message was displayed, and the vehicle stalled. The vehicle was taken to the local dealer who diagnosed that the engine coolant control valve was faulty and needed to be replaced. The contact was informed that the parts were on backorder and no repairs were performed. The manufacturer was not yet contacted. The failure mileage was 45,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667550,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/05/2025","dateComplaintFiled":"06/17/2025","vin":"3GTU9FET9MG","components":"ENGINE","summary":"I had an engine warning warning light on my dash around May 5th. A notice of reduced speed also lit up my dash while I was on the freeway. I scheduled a service for May 15th and was told the engine coolant flow control valve needed to be replaced. I was also told there was a backlog of other vehicles waiting for the same part. It has been over a month and I am still unable to drive my truck which I use for work.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11666349,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/05/2025","dateComplaintFiled":"06/11/2025","vin":"3GTP9EEL5MG","components":"ENGINE","summary":"My Truck has been consuming oil since new, latest documented consumption test was 1.25 quarts in 1967 miles. GM dealership said that is normal and no further diagnosis is required. GM says acceptable consumption is 1 quart per 2,000 miles. This truck has a 6.2L engine that is not under the current recall ( N252494000 ). The engine problems affect more vehicles that the current recall and should be investigated.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11665275,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2025","dateComplaintFiled":"06/06/2025","vin":"3GTU9EET6MG","components":"UNKNOWN OR OTHER,ENGINE","summary":"Dealer keeps ignoring engine knock noise states its normal , mpg is down dramatically . Shift to park , vehicle only has 34k miles and dealer does not want to repair under warranty due to vehicle being a 2021 Battery keeps draining for no reason , new battery added still does the same thing","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664796,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/10/2025","dateComplaintFiled":"06/04/2025","vin":"3GTU9EET8MG","components":"FUEL/PROPULSION SYSTEM","summary":"- #5 injector failure, no. - Once the injector failed, the vehicle would violently shake when trying to accelerate. - Yes, was not covered under factory warranty but replaced by third-party extended warranty. -Yes, replaced by the dealership. -No warnings prior, once the injector failed warning for brake system check and vehicle mileage limits set in warning.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664514,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/27/2025","dateComplaintFiled":"06/03/2025","vin":"1GTU9FEL5MZ","components":"POWER TRAIN","summary":"received my truck back after replacement of the front transmission pump and idle gear, the same day the transmission had horrible down shifts, sometimes it would just downshift into neutral and bounce off the rev limiter. the service advisor told me that my transmission had to \"relearn\" my driving habits when I called him and would take 200-400 miles.. i drove it one more day and drove it back to the dealer to have them drive it. the agreed that something was wrong, but didn't know what and had to contact gm engineers. 2 days later they told me that the valve body needs to be replaced. I dropped it off to find out that it had been ordered with zero ETA of when they will receive it.. so now im stuck with a loaner and no ETA on when parts will be available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664640,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/03/2025","dateComplaintFiled":"06/03/2025","vin":"3GTU9FEL3MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The dealer was not contacted and confirmed that parts were not yet available. The manufacturer was not made aware of the failure. The contact had not experienced a failure. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664456,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"06/02/2025","vin":"1GTR9CED0MZ","components":"AIR BAGS,WHEELS","summary":"\u2022 The airbag system failed to deploy during a collision that resulted in the total loss of the vehicle. Additionally, the vehicle was operating with a 17\u201d spare tire (undersized compared to the standard 20\u201d wheels), which may have contributed to the accident. The vehicle has been totaled and is currently in the possession of the insurance company, but may be available for inspection upon request. \u2022 Despite the severity of the collision, none of the airbags deployed, which could have resulted in serious injury if the circumstances were different. The use of an undersized 17\u201d spare tire may have affected the vehicle\u2019s stability, braking, or performance, contributing to the crash. \u2022 No. The vehicle was declared a total loss and has not been evaluated for defect reproduction by a dealer or service center. However, I am aware of related recalls and lawsuits regarding both improper spare tire sizing and airbag non-deployment in 2020\u20132021 GMC Sierra models. \u2022 The vehicle has been inspected by the insurance company during the total loss evaluation. A police report was also completed at the scene of the accident. To my knowledge, the manufacturer (GM) has not inspected the vehicle at this time. \u2022 No. There were no warning lights, messages, or symptoms prior to the crash. The vehicle gave no indication of any issue with the airbags or tire compatibility leading up to the accident. I was involved in an accident in my 2021 GMC Sierra. At the time, the vehicle was operating with a 17\u201d spare tire installed, which I later discovered may be significantly undersized compared to the standard 20\u201d wheels. During the crash, the impact was severe enough to total the vehicle, but none of the airbags deployed. Fortunately, there were no injuries, but I believe the non-deployment of the airbags represents a critical product safety defect. I\u2019ve since learned that GM has recalled similar vehicles for incorrect spare tires, and that lawsuits have been filed regarding calibration issues.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664458,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/29/2025","dateComplaintFiled":"06/02/2025","vin":"3GTP9EELXMG","components":"ENGINE","summary":"Engine seized while at idle speed and has to be replaced. It was a catastrophic event, but not covered under the current recall for 6.2L L87 engines.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664208,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/31/2025","dateComplaintFiled":"06/01/2025","vin":"3GTU9DEL5MG","components":"VISIBILITY/WIPER","summary":"I don't believe this needs to have an investigation, but i would like it documented and brought to GM's attention for future body designs. I have never had as many rocks/debris hit my windshield as I have with this truck. I have had one chip in a windshield in 30+ years of driving, until this truck where I have had several that needed repairs, and this last one has created a Crack large enough where my windshield needs replaced. It may be bad luck, but I've talked to multiple other Sierra owners and most of them have had the same issue. A couple have had the windshield replaced almost yearly. Please at minimum inform GM engineers to possibly determine the cause (I assume aerodynamics) so they can incorporate the flaw (if there really is one) into future designs. The photo I included happened almost immediately after the impact. The crack has grown several inches since as expected.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664233,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/31/2025","dateComplaintFiled":"06/01/2025","vin":"3GTP9EEL0MG","components":"STEERING,SERVICE BRAKES,ENGINE","summary":"While traveling on the interstate the vehicle lost all propulsion and started to rapidly decelerate. Shortly after propulsion was lost the engine turned off completely affecting the steering and braking of the vehicle. The vehicle was towed to the GMC dealership that we purchased it from. repairs have not begun so I assume it would be available for inspection. We were traveling on a three lane interstate up a grade at 80 MPH. Had I not been able to safely get the vehicle stopped and out of traffic or had we lost control going down a grade we would not have been able to stop the vehicle and there would've potentially been a catastrophic accident most likely resulting in injury or death. No the dealership has not diagnosed the failure physically. The service writer did suggest that it sounds like the failure reported from the recall not being addressed. I did contact the dealer about the recall on Saturday May6th. At which time I was informed there was not a solution for the vehicle for my vehicle at that time. There were no warning prior to the incident. After the engine stopped operating there was a warning produced on the instrument panel that read \"Engine Oil Hot\" and the instrument panel no longer registered any oil pressure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664081,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/26/2025","dateComplaintFiled":"05/31/2025","vin":"3GTU9DED0MG","components":"POWER TRAIN","summary":"Reached the 100,000 mile mark and the truck started shuddering. Took it to the dealership and they tell me the torque converter is coming apart and I need a new transmission.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663930,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/20/2025","dateComplaintFiled":"05/30/2025","vin":"1GTU9FEL5MZ","components":"POWER TRAIN","summary":"front idler gear for the transmission pump failed at 39500 miles. was fixed under GMC warranty. but now after getting the truck back the transmission has extremely harsh down shifts. still waiting for GM to figure out what to do next..","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664010,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/05/2025","dateComplaintFiled":"05/30/2025","vin":"3GTP9EEL0MG","components":"POWER TRAIN,ENGINE","summary":"My truck has a known recall from GMC which results in total loss of propulsion. It has not failed yet, but this is dangerous to me, my family/kids, and potentially others on the road. I have made multiple attempts to speak with GMC about the issue and also my local dealer. Neither group will provide concrete information as to when they can look at/service my truck even though there is a known remedy - [XXX] I brought my car into the dealer December of 2024 for brakes and also a rattling noise since it was uncharacteristic. Noises can be indicative of this larger problem (which I know now and didn't then) but they \"didn't hear a rattle\" and the \"condition could not be duplicated\" which is patently false since it still makes the noise/has gotten worse. Since then, I have taken the following actions: - I called and spoke with the local dealer service team on 5/5 - was told since it's showing incomplete, no remedy available there was nothing they could do - Spoke with GMC on 5/5 - they directed me to the local dealership - Made an appointment online on 5/10 to get my truck serviced and to check for this problem - They immediately called me first thing on Monday 5/12 to cancel my appointment and again tell me there is nothing they can do about this issue - I have continued to express my safety concerns to both parties - I spoke to GMC today, 5/30 and was told that there is no timeline for the issue (with my VIN) even though the remedy is known - An appointment is scheduled on 6/12 with my local dealership, but if I recall status hasn't changed, they will not check for this problem INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663728,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/24/2025","dateComplaintFiled":"05/29/2025","vin":"1GTU9EET4MZ","components":"POWER TRAIN,ENGINE","summary":"The truck ever since of bought it has been nothing but issues. Starting with the fuel pump issues then electrical issues and most recently the coolant flow control valve. This is my work truck and now I\u2019m out of a truck with no loaner and the dealership has no eta.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663566,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"05/28/2025","vin":"1GTP9EEL9MZ","components":"ENGINE","summary":"I\u2019m filing a complaint regarding GM Recall N232404000/N232404002, which affects the L87 6.2L V8 engine in my 2021 GMC Sierra 1500 AT4. This recall is tied to a serious defect that can cause sudden loss of propulsion due to internal engine failure. My vehicle has shown symptoms since purchase \u2014 including engine ticking, unusual noises, and low oil levels \u2014 all documented by dealership service records. GM originally instructed dealers to replace engines based on build date, which made sense given the nature of the defect. But now they\u2019ve changed the remedy midstream. Instead of replacing potentially defective engines, they perform a PicoScope test, and if it \u201cpasses,\u201d the only action taken is replacing the oil with a different grade. This does nothing to resolve the underlying issue. How does a manufacturer go from replacing engines due to internal failure risks to simply changing the oil and calling the problem solved? This undermines the purpose of a safety recall and places future liability on the consumer. A known internal mechanical defect cannot be fixed with an oil change, yet GM is closing out cases this way. Now I\u2019m stuck with a vehicle I can\u2019t fully trust \u2014 one that may still fail unexpectedly \u2014 and possibly face diminished resale or trade-in value due to an engine that other buyers will view as unreliable or patched over. GM is leaving owners with the long-term risk while clearing their books of liability. I urge the NHTSA to investigate whether this revised approach truly meets federal recall standards.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663217,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/27/2025","dateComplaintFiled":"05/27/2025","vin":"3GTP9EEL2MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The dealer was contacted; however, the contact was informed that parts were not yet available for the recall repair. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662754,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/02/2024","dateComplaintFiled":"05/23/2025","vin":"1GTR8CEK9MZ","components":"ENGINE","summary":"Unknown There is a recall on the this model but with different motor but when I took mine in they said it was a.manufactured defect but I was out of warranty because I purchased it cash and didn't get extended warranty now im having to replace and pay for a head and new engine over 10,000 when vehicle doesn't even have 70,000 miles it started with a engine light going on amd off for 2 weeks then it just stopped working It's too coincidental that the sister truck make n model to this had a recall for exactly what is wrong with mine","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662535,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/02/2025","dateComplaintFiled":"05/22/2025","vin":"1GTP9EEL6MZ","components":"ENGINE","summary":"We have the 6.2 liter GM engine that has lost propultion. We are not covered in the recall and are 30,000 miles above the milage warranty, but still within the time portion of the warranty. GM payment assisitance has only offered us $1600 to help with replacing our engine. The dealership told me their warranty parts price was higher, so it really didn't offset any cost. This is our ONLY vehicle for our small appliance repair business. Our vehicle was manufactured at the plant in Canada where all the other faulty engines were manufactured. Please consider widening the recall to include our vehicle.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662109,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/14/2025","dateComplaintFiled":"05/20/2025","vin":"3GTP9EEL4MG","components":"ENGINE","summary":"My GM 6.2L V8 engine has seized in less than 100K Miles. Thankfully not whilst driving and being potentially harmful to myself or others with the catastrophic failure. This problem is being widely report and continually occurring. GM is saying that I am not included in the massive recall for this, However NHTSA notes the vin range as NR and indicates incidents are still occurring. Seems to be a real lemon situation here and even bigger a letdown to uphold consumer safety.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662133,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/20/2025","dateComplaintFiled":"05/20/2025","vin":"3GTU9DEL4MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 67,600.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662126,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2023","dateComplaintFiled":"05/20/2025","vin":"1GTP9EEL4MZ","components":"POWER TRAIN,ENGINE","summary":"Engine has stopped a couple of times at low speeds, Was able to restart and continue. Engine will occasionally make a \"straining / Dieseling sputtering sound\" when execellerating from low speeds or Stop. Transmission will make strange and strained shifts from time to time. This is reaccruing problem that comes and goes over the last approximately 2 yrs since about 9000 miles to current approx 25000 miles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661854,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/15/2025","dateComplaintFiled":"05/19/2025","vin":"3GTU9EET7MG","components":"ENGINE","summary":"code P1098. Engine light comes on, power is reduced, coolant fan runs on high. Temp gauge fluctuates. This last for 20 minutes or so. The engine then returns to normal. After a few days the engine trouble light goes off. This happens every several weeks. Parts are backlogged and I understand this is a common problem with this engine. I have 64000 on it.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661925,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/19/2025","dateComplaintFiled":"05/19/2025","vin":"3GTP8DED4MG","components":"LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the rear tailgate panel buttons had deteriorated causing water intrusion into the panel, and the buttons became inoperable when pressed, and the rear tailgate would not open. The vehicle was taken to the local dealer who replaced the rear tailgate panel, and the vehicle was repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 20,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661967,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/05/2021","dateComplaintFiled":"05/19/2025","vin":"3GTU9DEDXMG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was an abnormal rattling sound coming from the vehicle, with several unknown warning lights illuminated. The vehicle was driven to the residence. The vehicle was taken to the dealer where it was diagnosed with cam shaft and lifter failures. The contact was informed that the cam shaft and the lifters needed to be replaced. The vehicle was not repaired. In addition, the contact stated that when the vehicle was purchased in 2020, the failure had occurred; however, the repair was covered under warranty. The manufacturer was not made aware of the failure. The failure mileage was approximately 7,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661981,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/15/2024","dateComplaintFiled":"05/19/2025","vin":"3GTU9DED5MG","components":"POWER TRAIN","summary":"The transmissions in this as well as several other models of GM as well as Ford products with these transmissions are known to have major issues. My particular vehicle has major transmission shipping issues that started right around 90,000 miles or so. It started with a hard shift occasionally and has now progressed to a consistant hard shift, as well as a major shudder issue in the 35-45 mph range as well as the 65-75mph range ( when shifting into applicable gears) this has gotten worse over the last few weeks. These GM/Ford collaboration transmissions have been faulty from their inception and are well known to start malfunctioning in the 80-120,000 mile range. Please recall these transmissions so that consumers are not faced with thousands of dollars in repairs in vehicles that should last well beyond the short life span of the transmissions. I have been quoted 62-6500.00 for a replacement as there is no rebuilding these transmissions according to the mechanics I have consulted...(some have cited part availability issues as a reason). This has been a well reported problem with these vehicles/ transmissions for years now with many complaints and issues about the faulty transmissions. Just google it. I don't understand why theu have yet to be recalled.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661639,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/22/2022","dateComplaintFiled":"05/17/2025","vin":"1GTU9FEL4MZ","components":"ENGINE","summary":"While driving vehicle started running rough and exhaust was white from tail pipes, could not accelerate and warning lights were flashing. Limped to dealership and diagnosed with a bent rod and had to tear both sides of engine apart and replace heads on both sides due to bulletin for Gmail at 7500 miles. Why is this vehicle not part of the recall to protect my investment?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661367,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/27/2025","dateComplaintFiled":"05/16/2025","vin":"1GTP9EEL0MZ","components":"ENGINE","summary":"While the vehicle is traveling at highway speeds it is misfiring and sputtering, giving the feeling of a hard shift. When the vehicle is idling, the engine is sputtering like it\u2019s going to shut off. If the truck were to shut down, as it seems to be trying to do, this could be deadly at highest speeds or intersections. The vehicle has been at a dealer since January 2025. They claimed to have fixed it but upon paying over $1200 and picking it up from the dealer, the problem persisted. We had to take it back to the dealer within 5 minutes of picking it with zero repairs and no estimated time of repairs ever since. No warning lights appeared at all.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661210,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2025","dateComplaintFiled":"05/15/2025","vin":"1GTP8DED3MZ","components":"ELECTRICAL SYSTEM","summary":"GM has has a known issue with a switch/sensor placed at the base of the shifter that causes the \u201cshift to park\u201d error message that prevents the electrical system from shutting down when the vehicle is physically in park and the engine is turned off, In fact, GM has issued a recall for several different models in which a \u201cshift to park\u201d error message is displayed because of the poor design; however, they continue to see the same issue occur but claim it is not a warranty issue (unless it occurs within 3 year/36,000 mile time frame. This is not an issue that can be caused by owner misuse, and I believe that GM should be held liable for repairs given that the issue is, and has been, known for several years now.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11660817,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2025","dateComplaintFiled":"05/14/2025","vin":"3GTU9FEL0MG","components":"ENGINE","summary":"So there is recall already for the engine but I\u2019m not part of it which is weird cause my engine has been acting weird which I\u2019m trying to take to dealer ship but they don\u2019t want it due to I not being in the recall list. I have the engine 6.2 LTI have an 2021 GMC Sierra Denali","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11660248,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/11/2025","dateComplaintFiled":"05/11/2025","vin":"3GTU9CET9MG","components":"ENGINE","summary":"The camshaft cover in pre 2021 3.0L Duramax motors is leaking oil/def internally causing oil loss. This is something GM has noted in their TSB pages but has not issued a recall over. This is a hazard to emissions, oil consumption, and the def system. Also could result in premature engine failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11660267,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/07/2025","dateComplaintFiled":"05/11/2025","vin":"3GTU9EET3MG","components":"POWER TRAIN","summary":"VEHICLE IS DIAGANOSED WITH A COOLANT CONTROL VALVE ISSUE. VEHICLE IS CURRENTLY AT A GM DEALER AWAITNG REPLACEMENT PART AND PART IS ON BACK ORDER FOR AN UNDERTEMINED AMOUNT OF TIME. IT IS WIDELY KNOWN THIS IS A COMMON PROBLEM WITH THIS MAKE AND YEAR MODEL OF VEHICLE. THIS MATTER PUTS AN UNDUE HARDSHIP ON ME AS A VEHICLE OWNER. WITH NO KNOWN ETA FOR THIS PART I STAND TO BE OUT OF USE OF THIS VEHICLE FOR A LONG TIME. GM NEEDS TO BE MORE ACCOUNTABLE AND ATTENTIVE TO THEIR CUSTOMERS AT A TIME LIKE THIS.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11660285,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/25/2025","dateComplaintFiled":"05/11/2025","vin":"1GTU9EETXMZ","components":"POWER TRAIN,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM","summary":"The engine coolant flow control valve position sensor is faulty. I brought mt truck in to my dealership and I have been waiting for over a month to get the issue fixed because \u201cthe part is on backorder\u201d. This issue makes my truck sound like a jet engine because it makes the truck think overheating and causes the fan to come on at full blast. After drivinf for awhile it goes into \u201c reduced engine power mode\u201d which is totally unsafe because it reduces the horse power to that of a lawn mower. It takes about 30 seconds to get from 0-60, so merging onto freeways or in conditions where you need extra speed its completely useless and increases the scenario of being rear ended, immensely.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659772,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2025","dateComplaintFiled":"05/08/2025","vin":"3GTU9CED6MG","components":"ENGINE","summary":"-While driving the vehicle on the highway, abruptly lost power and RPM. Check engine light, along with multiple other warning lights lit up. When parking the truck soon after, had an associated rough idle with low RPM. The truck was then towed to GMC dealership. -Multiple fuel injectors failed, starting misfiring and caused damage to the engine. Unknown if previous injectors are available, replaced at GMC dealership. The damage resulted in recommendation to replace the engine. -Engine began misfiring while traveling at highway speeds, placing me at an increased risk of loss of control of the vehicle. -The problem was reproduced, confirmed, and inspected at a GMC dealership. -No warning lights or symptoms were present prior to accident. Incident occurred abruptly.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659180,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/15/2025","dateComplaintFiled":"05/06/2025","vin":"1GTP9EEL8MZ","components":"POWER TRAIN,ENGINE,LANE DEPARTURE","summary":"El motor de mi camioneta fall\u00f3 por completo empez\u00f3 a hacerle unos ruidos muy fuertes dentro del motor con solo 80,000 millas es del 2021 la compr\u00e9 el a\u00f1o pasado no lleg\u00f3 ni un a\u00f1o de uso una camioneta que supuestamente era muy buenas Estaba en el momento de lo sucedido estaba con mi mujer y mi hijo en el auto regres\u00e1bamos de un restaurante ac\u00e1 en Miami y la camioneta se par\u00f3 de pronto La camioneta fue inspeccionada por la garant\u00eda extendida la cual no asumi\u00f3 la reparaci\u00f3n Luego del problema si salieron luces amarillas y rojas en la pantalla de mi camioneta","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659344,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/29/2024","dateComplaintFiled":"05/06/2025","vin":"1GTU9FEL4MZ","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 75 MPH, the vehicle lost automotive power. The contact pulled over onto the side of the road, and upon parking on the side of the road, the message \"Shift to Neutral\" was displayed. The contact shifted into neutral, and the vehicle was restarted. The vehicle was taken to a local dealer, and was diagnosed, and the contact was informed that no cause for the failure was found. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 24,453.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658920,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/05/2025","dateComplaintFiled":"05/05/2025","vin":"3GTU9FEL8MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle lost motive power, with several unknown warning lights illuminated. The vehicle was able to restart but went into LIMP Mode. The vehicle was towed to the dealer, where it was diagnosed that the cylinder head had failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 43,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658982,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/01/2024","dateComplaintFiled":"05/05/2025","vin":"3GTP9EEL5MG","components":"POWER TRAIN,ENGINE","summary":"While driving on the highway the engine died forcing me to change lanes to cross traffic and coast to a stop on the shoulder. It was dangerous and unexpected. It would not restart so I had to have it towed. Inspection revealed the bearings had gone bad in the engine and the engine would have to be replaced. I had to wait 2 and half months for an engine.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659055,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/05/2024","dateComplaintFiled":"05/05/2025","vin":"3GTP9EEL5MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the vehicle was experiencing excessive oil consumption. The low oil pressure warning light was illuminated. The vehicle was taken to the dealer, but the failure could not be duplicated. The vehicle was taken to the dealer several times, where an oil consumption test was performed. The contact stated that the oil consumption test was not completed. The contact stated that while driving 55-60 MPH, the contact noticed an abnormal oil odor, and the low oil pressure warning light was illuminated. The contact pulled over. The contact then noticed that a significant amount of oil was leaking onto the ground. The vehicle was towed to the residence of the contact's brother. The contact stated that upon inspecting the vehicle, the contact became aware that oil was leaking from the oil pan. The vehicle was towed to the contact's residence, where the contact added oil to the vehicle. The vehicle was taken to Beck & Masten GMC Coastal (200 US-77, Robstown, TX 78380), where the rear main seal gasket was replaced; however, the failure persisted. The vehicle was taken back to the dealer, where it was diagnosed that the alternator and the crankshaft hoses had failed due to excessive oil leaks. The dealer charged a fee for the alternator and the crankshaft hoses replacement. The dealer informed the contact that the rear main seal gasket replacement was covered. The dealer related the oil leak to the oil pressure. The vehicle was not repaired. The manufacturer was notified of the failure, and cases were filed; however, no further assistance was provided. The failure mileage was 44,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659086,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2025","dateComplaintFiled":"05/05/2025","vin":"3GTP9EEL0MG","components":"ENGINE","summary":"In February of 2025 my check engine light came on while i was at work. Went to the local auto zone to have the code read and it. Right after that i drove straight to Gay Family Auto. along the way there was a jolt followed by a stall The car behind me nearly re ended me. i made it to the dealership after inspection i was told i blew a rod and had metal shavings due to an engine failure. Up to this point i had no indication of any issues or dash board warnings. i was told i needed to provide all prof of oil changes which i did. after two months i get my truck back from GMC with a new motor. The new motor is now under recall for doing the exact same thing as my old motor. GM basically took out a faulty motor replaced it with a new one in hopes nothing happens. I reached out to GM and they told me to take it to a dealership for inspection. The dealership told me they wont touch it til GMC sends a solution. im currently driving a truck that could possiably fail again","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658813,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/26/2025","dateComplaintFiled":"05/04/2025","vin":"1GTU9FETXMZ","components":"STEERING,WHEELS","summary":"I was driving approximately 25-30 mph coming over an overpass moving into the right hand lane when my truck right front end failed. The steering and brakes locked up for approximately 50\u2019 until I hit the curb for the sidewalk and stopped. I safely exited the vehicle checked the left side of my truck for damage and didn\u2019t find anything. I walked around the back of my truck and came to the passenger side where I found my right front wheel and tire completely broken away from both upper and lower control arms, the ball joint broke and failed as well as the brake line. If I was driving on the highway at 65-75 this catastrophic failure could have resulted in a fatal collision. The night before my [XXX] daughter and I returned from her outdoor Ed trip in Sausalito and we drove an hour home to Napa on [XXX] and [XXX] . I thank god this didn\u2019t happen with her in the car on the highway. I had my truck towed to Jimmy Vasser Chevy in Napa so I can see if the extended warranty will cover the repairs since it was an obvious catastrophic failure of the whole right front end. It\u2019s still sitting there. The extended warranty inspector came Friday to take pictures of the damage INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658592,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/12/2025","dateComplaintFiled":"05/02/2025","vin":"3GTU9DEL8MG","components":"POWER TRAIN","summary":"Was driving vehicle on freeway at normal speeds and the vehicle lost propulsion. Engine was off and vehicle said to shift to neutral and restart. I was able to exit the freeway safely (barely) to the median. Vehicle would not restart. It has the L87 engine which is under recall. Vehicle is at dealership submitted under the recall. I am being told there is \"no remedy\" and \"no parts\" and given no timeframe for any fix to be completed. I am still liable for the payments, insurance and this is our only vehicle in a single father of three family.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658582,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/13/2021","dateComplaintFiled":"05/02/2025","vin":"1GTU9FET8MZ","components":"ENGINE","summary":"The vehicle will crank and not start. Dealership said they cannot replicate the fault. Same problem occurred after with dealership not helping. I am a US Soldier currently stationed in Germany and continue to have the same problem every 2months. It will crank and not start. The truck will start on the second attempt after cranking for about 20seconds. The continued issue can permanently damage expensive repair parts that I will not be able to afford. I know I am not the only one with the same issue as I have talked to others and have no solution for this.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658150,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2025","dateComplaintFiled":"05/01/2025","vin":"1GTU9FEDXMZ","components":"STEERING,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at slow speeds and accelerating out of the neighborhood, the vehicle experienced a loss of automotive power, with the check engine and EPS warning lights illuminated. The contact was able to drive the vehicle back to the residence. The vehicle was then towed to a local dealer where the vehicle was diagnosed, and the contact was informed that the engine had failed and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 103,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658325,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/13/2024","dateComplaintFiled":"05/01/2025","vin":"3GTU9DEL2MG","components":"POWER TRAIN,ENGINE","summary":"I was coming home after work, before I got home I stopped at the gas station to fill up my tank, after I filled up my tank I start driving home but while on my way home my truck wasn\u2019t speed as I expected and it only goes maximum of 10mph and I was confused, I stop and check my truck see what happens but there is no sign since there was no sign I get on my truck and start driving to home, after I got home I was trying to revers parking and that\u2019s when I realized my truck wouldn\u2019t reverse. I thought of if it happened while I was driving on highway and my truck stopped on the middle of highway I could have lost my life. I called the dealer and the dealer told me it might be because of the engine then next day I took it to the shop and they couldn\u2019t figure until couple days later and it took them around 2-3 weeks to replace my transmission. Luckily I had the power train warranty when I bought the vehicle and it don\u2019t cost anything. If I didn\u2019t have that power train warranty everything will come out of my pocket, the cost was around $6-7k.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658329,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/12/2025","dateComplaintFiled":"05/01/2025","vin":"3GTU9FET7MG","components":"ENGINE","summary":"Coolant Control Valve (ccv) on these vehicles are notorious for breaking down/ becoming non-operative. I have been waiting for a part for months.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658334,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/26/2025","dateComplaintFiled":"05/01/2025","vin":"3GTP9EEL3MG","components":"ENGINE","summary":"My vehicle suddenly stopped working in the middle of an intersection. A screen notification prompted me to restart it, so I pulled over safely, as there were no other vehicles nearby. However, I worry about the potential danger if this had happened on a freeway. After waiting, I tried restarting the vehicle, but it still wouldn\u2019t work. The next day, I received an email from Carfax about an open recall for my vehicle due to engine issues, matching the symptoms I was experiencing. I scheduled an appointment for 4/28, and had the vehicle towed to Elk Grove Buick GMC. At GMC, they couldn\u2019t offer immediate solutions, needing to diagnose the vehicle first. This process took about four days. During this time, I was advised to contact GM, as the vehicle was affected by the recall. I submitted a case to GM on April 28th, requesting compensation for a rental or loaner vehicle, a truck for my business needs. Without it, my business operations would suffer, leading to revenue loss. The dealership\u2019s diagnosis found the engine seized due to a failed bearing. GM contacted me about the recall, initially mentioning the lemon law and a potential buyback, which I hadn\u2019t considered. After I expressed a desire to repair the vehicle, they contacted the dealership for more information. GM later clarified that the vehicle wasn\u2019t covered under the recall, citing the cause and symptoms as not meeting the recall\u2019s criteria. This seems contradictory, as a failed engine doesn\u2019t necessarily contradict the recall. GM stated they couldn\u2019t provide a remedy, leaving me responsible for repair costs, and noted my vehicle\u2019s 70,000 miles exceeded the power train warranty. Recall claims dealerships will inspect and, if necessary, repair or replace the engine. It\u2019s confusing why my vehicle isn\u2019t covered for repairs or assistance under this recall despite the engine failure. What is the law in terms of warranty as I was under the impression that warranty status is irrelevant in an active recall vehicle.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658064,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/18/2025","dateComplaintFiled":"05/01/2025","vin":"3GTP8DED7MG","components":"UNKNOWN OR OTHER,ENGINE","summary":"The transmission is constantly whirring, rattling, and screeching.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658086,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/18/2023","dateComplaintFiled":"05/01/2025","vin":"3GTP9EEL6MG","components":"ENGINE","summary":"Engine failed GM made me pay for a new one. Second engine failed due to mechanics did not change out radiator. I now have a third motor with a recall. This vehicle has cost me a lot of out of pocket expenses, I believe GM owes me for the depreciated value plus lost wages. Maybe a buy back I'm not sure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658162,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/13/2024","dateComplaintFiled":"05/01/2025","vin":"1GTR9CED4MZ","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"I've noticed rough or jerky gear shifting when accelerating, rough and reduced propulsion, loss of power. Dealership repaired power torque converter but the truck continue to have the same symptoms.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658308,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2025","dateComplaintFiled":"05/01/2025","vin":"1GTP9EEL2MZ","components":"UNKNOWN OR OTHER,ENGINE","summary":"We NEVER RECEIVED A RECALL NOTICE FYI . This vehicle has been serviced consistently.never an issue. Driving on [XXX] very busy! Truck literally stopped in the middle of the freeway in a very bad location. Desert. Noon. Kids with us. Could have died. Preliminary eval: engine seized, piston rod failure. Not sure the rest - we have to tow it home first. Failed while traveling. Please call for more information if needed. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657722,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/09/2025","dateComplaintFiled":"04/30/2025","vin":"3GTP9EEL9MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 65 - 70 MPH, there was a knocking sound coming from the vehicle and the vehicle shut off. There were unknown warning lights illuminated. The vehicle was towed to an unknown location. The local dealer was contacted. The vehicle was not diagnosed or repaired. The vehicle was taken to an independent mechanic who determined that there was a solid engine bottom and bearing failure. The contact was informed that the engine needed to be replaced. The vehicle was repaired. but the failure recurred, and the vehicle failed to start. The manufacturer was contacted and informed of the failure. The failure mileage was approximately 83,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657729,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2025","dateComplaintFiled":"04/30/2025","vin":"3GTP9EEL7MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact was notified of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657774,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/10/2025","dateComplaintFiled":"04/30/2025","vin":"3GTU9FEL2MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed and making a turn, the vehicle made a loud banging sound and the vehicle shut off. No warning light was illuminated. The vehicle was towed to an independent mechanic, who determined that the engine had failed and needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the VIN was not included in the recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657863,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/09/2025","dateComplaintFiled":"04/30/2025","vin":"3GTP9CEK7MG","components":"ENGINE","summary":"Vehicle has less than 64,000 miles and seems to be having engine issues. ESC message with engine power reduced. Cannot even drive the vehicle any longer. Cannot get it into a shop for a month and will have to have it towed.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658027,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/25/2025","dateComplaintFiled":"04/30/2025","vin":"3GTU9FEL1MG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"While driving my truck with my wife and two young boys, the truck engine completely shut off while operating it. We were stuck in the middle of the road and had to cautiously wait until we could move the vehicle out of the way. The engine locked up. Now they are trying to repair the engine with the same exact engine that is on recall and potentially put me and my family in the same dangerous position.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657410,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/09/2024","dateComplaintFiled":"04/29/2025","vin":"1GTP8DED5MZ","components":"POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE","summary":"Tried to accelerate and heard a loud pop and the truck didn\u2019t accelerate. Pretty much went idle in the middle of the road. The check engine light, the traction control light, and the ABS light all came on. I would press on the gas and it would rev but nothing would happen till a few seconds later the RPM\u2019s would shoot up and you could tell it was trying to get going but didn\u2019t very slowly and I would hear a clicking noise every time it was around the second gear. It put my children and myself in danger because traffic was heavy with vehicles going 70+mph merging into one lane. Took it to a dealership and they stated it was the the push rod and camshaft were damaged and all 16 lifters should be replaced and camshaft also. No, the vehicle has not been inspected by any of those except a car dealership and a mechanic. This problem first appeared the day it happened and continued after. Even took it to a mechanic and had all 16 lifters changed and problem still persists. Spent over $6,000 on a brand new truck and it is still undrivable because every time you get in to drive it the cylinder #2 misfires.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657497,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/01/2021","dateComplaintFiled":"04/29/2025","vin":"1GTP9EEL1MZ","components":"ENGINE","summary":"I had purchased a 2021 GMC Sierra equipped with the 6.2 liter motor in October of 2021. Within two weeks, my engine was experiencing problems. There was no service lights on the dash, and my truck suddenly shut off while on a busy road. I was able to coast to the side of the road, however it was a driving lane with no shoulder which made the situation dangerous. I was able to restart the engine after some time, and eventually get the vehicle off of the roadway, thankfully I got out of the driving lane without being struck by another vehicle. The truck had approximatley 1000 miles at this time and was brand new. I ended up needing a complete engine replacement due to failed crank bearings and connecting rods. I was told it was a crankshaft issue. After the complete motor replacement, sometime during the next year I was experiencing oil burning issues. On this second motor, a GM dealer had to completley rebuild the top end of the motor and install new piston rings. This is now a total of two motor failues in under 30,000 miles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657636,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/18/2025","dateComplaintFiled":"04/29/2025","vin":"1GTP9EEL1MZ","components":"ENGINE","summary":"First engine blown 31,904 miles, Lifter failure. Replaced with re-manufactured engine. Second engine failure at 68,000 miles, Piston rod failure. Piston blew thru engine block and engine bay caught on fire.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657662,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/25/2024","dateComplaintFiled":"04/29/2025","vin":"3GTP9EEL3MG","components":"ENGINE","summary":"I wanted to reach out to see if there is anything in addition to the lemon law. I bought a 2021 GMC Sierra with 38,000 miles on it around March of last year. There was a motor defect which was covered by the warranty. I was driving and it stopped in the middle of the road so I had to safely maneuver out of the main road. The truck was towed to my house with 45,184 miles on it, until the GMC dealership could take it in to inspect. They did take a while to get me a rental because everything was backed up. They said they could rent me out a truck due to not being their brand and that it only covers a certain amount. It got taken in by the dealership on 7/15/2024 and ended up getting the truck back repaired on 8/27. I did get the truck back and have been having it, I am just worried about it breaking down or anything of that nature. I just wanted to know if there is any further process I should do or since they repaired it there should be no issue.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657141,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"04/28/2025","vin":"1GTP9EEL9MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that there was an abnormal ticking sound coming from the vehicle while idling. There was no warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was then notified of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was not made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 33,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657216,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/16/2025","dateComplaintFiled":"04/28/2025","vin":"3GTU9FEL4MG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving approximately 55 MPH, the vehicle suddenly experienced a loss of automotive power. During the failure, the message \"Shift into Neutral to Restart\" was displayed. The vehicle was later towed to the local dealer, who diagnosed that the piston bearings had seized, causing damage to the engine. The engine was replaced along with the radiator, oil cooler and oil cooler hoses, intake manifold, mega fuse, and starter. The manufacturer was notified of the failure. The contact was informed that the VIN was recently included in the NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 122,691.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657385,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/11/2024","dateComplaintFiled":"04/28/2025","vin":"3GTU9BED7MG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"See attached vehicle repair orders/Carfax/vehicle registration. The trucks transmission has been slipping/jerking hard since I pulled off the lot at dealer ship. Its burning oil no leaks has been doing so since the day I drove off the lot at dealership. I have asked to fix or address and problem still exist. They sold vehicle as everything was working The Left head light wasn\u2019t working the day I drove off the lot didn\u2019t notice until I got home I reached back out to dealer to explain and said light had a short in kept truck for almost a week said the were going to replace the head light and never did. The remote start wasn\u2019t working the same day i purchased the truck but sold it as everything is working. I went to try it as I was getting ready to leave dealership and did nothing. Then I discovered the fog lights were missing, and dealer said oh there was never any in the truck but if you read the service paper work there was lights in truck. Took truck back to address the issues the next day or so after purchase I was told to bring truck back the following week. All the conditions still exist and I should not be having any of these issues as the sold vehicle nothing wrong. They even had an October inspection saying everything was SAT but I get in truck no fog lights and left head lamp is not working but they performed an 360 inspection\u2026.yeah no way\u2026 This truck is doing the same as my 2021 chevy Silverado but there is nothing wrong with vehicle according to dealership. Sold A Lemon if you asked me\u2026 ***Highlighted in yellow is a recall that the dealership has not done nor can they find anything on the recall**** *****Power train**** Recall date 2024-10-24 Recall no. 24V797000 General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel en","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657309,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/11/2025","dateComplaintFiled":"04/28/2025","vin":"3GTP9EEL2MG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Motor seized up while going around 65mph. Truck lost all power and would not start brought to dealer and they said that it was the crankshaft bearings and something with the connecting rods, the deal told me that they don\u2019t know what to do and is waiting on GM. There is a recall for these issues but no fix. I\u2019m just waiting for the dealer to tell me what\u2019s next but they don\u2019t even know.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657116,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"04/27/2025","vin":"1GTP9CEK9MZ","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"Engine power reduced, could not accelerate, fuel pump issue and was bucking the engine Went to dealer and complained as gmc not working to help me, dealer fixed issue but said no other complaints out there and car was fixed, gmc called me several times and keeps saying no issues with the vin associated. The car was fixed but I am stuck with a truck that is probably not saleable once these issues continue. This issue happened initially with 30 k on it and dealer could not find the issue and this times at 61500 happened again","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11656472,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/18/2025","dateComplaintFiled":"04/24/2025","vin":"1GTP9EED9MZ","components":"POWER TRAIN,ENGINE","summary":"was getting on the interstate whenever i hit 70 mph just heard a hard knock in the engine and truck was driving rough. the truck it self dropped to 60mph. before it occurred there was no check engine light on or anything. after i had the dash light up with engine light, brake light, stability light. about a week later took it to the dealer they said it was fuel injectors they replaced it took them about 2weeks but the problem wasn\u2019t resolved but then stated it was the lifters which they said it almost common for this to happened. so i took it somewhere else to get replaced and they said yes it was the lifters and i needed to replace the camshaft because when the lifters go out it will damage the camshaft. all they did to diagnose my problem was hear it was ticking and the knocks also with the codes from the dealer diagnosis. after my repairs it was expensive least to say","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11656295,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/02/2025","dateComplaintFiled":"04/23/2025","vin":"3GTU9FET7MG","components":"ENGINE","summary":"Engine light came on, went to the dealership where I bought the truck less then two weeks prior. The Chevy dealership ran diagnostic test on it. They said it was the Engine Coolant Control Valve. This is a common problem with the 3.0 Duramax diesel engine. I belong to a group on Facebook with the same truck as mine. they are all having the same issue. We are waiting for a recall. the part is on back order and cost $300 just for the part plus labor. I bought the extended warranty and they said it did not cover this part.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11655479,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"04/18/2025","vin":"1GTR9CEK9MZ","components":"ENGINE","summary":"Had the car since 2021. Recently started shaking while driving over 45 mph. Took the car in gmc dealership where they told me it\u2019s an engine issue and need a brand new engine. How would I need an engine having the car for 4 years? And there is no recall?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11655287,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/30/2025","dateComplaintFiled":"04/17/2025","vin":"1GTP9EEL9MZ","components":"POWER TRAIN,ENGINE","summary":"July of 2023, lifters failed on left side of engine. Lifters replaced and cam shaft replaced. January 2025, lifters failed on right side of engine. Replaced. March 2025. Engine seized on interstate. Truck lost all power while driving, no warning signs prior. Dealership has no rental vehicles and we are not old enough to rent from a third party company so family had to drive 9 hours to our location so we wouldn\u2019t be stranded. Three times this truck has failed us. GM is putting in a new motor as it\u2019s still under warranty, but the new motor has no additional warranty. So basically this new motor will be warrantied for less than 7k miles. They cannot say if the new motor has the remanufactured lifters or not. So we could be facing the same exact issues. Can\u2019t ever get ahold of anyone directly though GM.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11655124,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/12/2024","dateComplaintFiled":"04/16/2025","vin":"3GTU9CETXMG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"Transmission recall was performed at a gmc dealership. Vehicle has been the the shop repeatedly since. Coolant control valve crank case position sensor new catalytic converter and dpf system. New low temp coolant loop pump. In the shop now for another low temp coolant pump that\u2019s been shorted out. Seems to have on going electrical issues since recall was performed","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654782,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2025","dateComplaintFiled":"04/15/2025","vin":"1GTU9FEL9MZ","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 70 MPH, several unknown warning lights illuminated, with the message to shift to neutral displayed. The contact pulled over to the right side of the road and attempted to restart the vehicle; however, the vehicle failed to respond as needed. An unknown dealer was contacted. The contact stated that the failure had occurred on several occasions. The vehicle was towed to the dealer, where it was diagnosed that the engine was damaged and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and offered a monetary payment. The approximate failure mileage was 80,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654541,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/14/2025","dateComplaintFiled":"04/14/2025","vin":"3GTP8DED5MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was an abnormal sound coming from the engine compartment. The contact pulled over to the side of the road and discovered that the engine oil level was low. The check engine warning light was illuminated. The failure occurred on several different occasions. The vehicle was taken to a dealer, where it was diagnosed that the lifters needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken to a different dealer (Legacy Westbank Buick GMC; 3611 Lapalco Blvd, Harvey, LA 70058) to be diagnosed. The vehicle was not diagnosed or repaired. The contact was taken to a different dealer (Mossy of Picayune; 241 Frontage Rd, Picayune, MS 39466) where it was diagnosed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 27,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654310,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/12/2025","dateComplaintFiled":"04/13/2025","vin":"1GTU9DEL1MZ","components":"ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"ESC ERROR PARKING BREAK NOT RELEASING Dashboard lights started flashing Check engine light came on","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654213,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/07/2025","dateComplaintFiled":"04/11/2025","vin":"1GTP9EEL8MZ","components":"ENGINE","summary":"Driving 75mph towing a 24' trailer and the motor just shut down and almost caused a massive pile up on [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654173,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/06/2025","dateComplaintFiled":"04/11/2025","vin":"3GTU9DEL2MG","components":"ENGINE","summary":"at 16,000 miles Bank 1 lifters fail and replaced under warranty. now at 90190 miles Bank 1 lifters have failed again this time damaging the camshaft. I have all the service records for this engine and I was verbally assured by GM in 2021 that they would cover this repair until 100,000 miles. I know from looking on Google and talking with service advisors at GM that the 6.2L ecoTec3 V8 engines are having multiple problems related to my issue. GM should be able to warranty this engine to 100,000 miles and from past experience this engine should last 200,000 with good service.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11653665,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/28/2025","dateComplaintFiled":"04/09/2025","vin":"3GTU9DET8MG","components":"ELECTRICAL SYSTEM","summary":"This truck, along with many others, has had wiring harness issues. My truck has fought this issue within the first six months of owning the truck. Since Jan 2025 it has left me stranded 3 times to be towed, and in the shop a total of 6 times for wiring harness issues. Rubbing that GM is 100% aware of how its designed. This has caused the truck to hesitate, shake, lunge, go in and out of gear severely hard then shut off while driving. All three time this happened to me recently i was on the interstate. GM has work orders out with all the codes and symptoms but wont do anything about it. Yes, i am out of warranty, but i am now paying over $5,000 for a new harness to be installed by a different dealer. The dealer that had always worked on this truck requested $8,100 so i called a new GM shop. This is a large issue and they keep turning their back and not addressing the issue and putting drivers at risk! Can provide last diagnostics and can request all notes from Stoops Buick GMC in Muncie Indiana, i have a rather large file there on this truck.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11653559,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/08/2025","dateComplaintFiled":"04/08/2025","vin":"1GTR9BED5MZ","components":"UNKNOWN OR OTHER","summary":"My tailgate will randomly open on its own. I\u2019ve had several instances( 5 or 6 times so far) when I\u2019ve had open on its own. Only once so far when i was driving. Luckily, i was on my private road without anything in my bed that could fall out. I often carry mountain bikes over the tailgate which could pose a serious danger if the tailgate were to open when driving. Also earlier this evening when the tailgate came down on its own while driving, when I got to my destination, I was unable to open the tailgate at all from outside the vehicle. It is apparent the button to release the switch is malfunctioning. I was able to get it to open by using release button inside the vehicle.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11653153,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/26/2025","dateComplaintFiled":"04/07/2025","vin":"1GTU9FEL2MZ","components":"ENGINE","summary":"Driving on highway at approximately 70 mph and the engine completely cut off without warning. Error message on dash said put car in neutral and press the start button. After safely pulling over, the vehicle was never able to start or even crank. Towed back to the dealership. Catastrophic engine failure according to the dealership. Vehicle has the 6.2 V8 engine with known issues by GMC apparently. Only 32k miles and under warranty but dealership reports that replacement engines are on back order and they have not been able to source one.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11653193,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/27/2025","dateComplaintFiled":"04/07/2025","vin":"3GTP9EEL1MG","components":"ENGINE","summary":"Engine failure. Engine Locked up and truck shut down in the middle of the Freeway. Barely made it to the side of the road.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652962,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/28/2025","dateComplaintFiled":"04/05/2025","vin":"3GTU9FEL9MG","components":"ENGINE","summary":"Lifter failure resulting in damage cam shafts","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652869,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/15/2025","dateComplaintFiled":"04/04/2025","vin":"1GTP8CET0MZ","components":"POWER TRAIN,ELECTRICAL SYSTEM,LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while the vehicle was parked, the contact attempted to turn off the vehicle; however, the vehicle remained running. A message was displayed to shift to park(P). The contact stated that the lights, radio, and other functions remained operational. On another occasion, the vehicle jerked, and the steering was difficult to turn. The dealer was contacted; however, the vehicle had not been taken to be diagnosed or repaired. The contact also stated that the trunk failed to fully close. The message that the trunk was open was displayed. The contact attempted to close the trunk and message on the displayed was turned off; however, the trunk remained slightly open. The vehicle was not taken to be diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 63,315.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652877,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/14/2025","dateComplaintFiled":"04/04/2025","vin":"1GTU9BET4MZ","components":"POWER TRAIN","summary":"Transmission will slam hard then truck goes into low power mode and doesn\u2019t shift.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652202,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"04/02/2025","vin":"3GTU9CET1MG","components":"POWER TRAIN","summary":"P1098 coolant Control Valve malfunction and out of stock","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652244,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"04/02/2025","vin":"1GTU9EET9MZ","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at 50 MPH, the transmission independently downshifted and the rear wheels seized. The contact stated that the rear wheels skidded. In addition, the contact noticed an abnormal clunking sound. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure. The contact stated that the failure occurred immediately after the recall repair under NHTSA Campaign Number: 24V797000 (Power Train) was performed by the dealer. The manufacturer was not made aware of the failure. The failure mileage was unknown.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652273,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2024","dateComplaintFiled":"04/02/2025","vin":"3GTU9FEL0MG","components":"ENGINE","summary":"At cold start-up, engine (6.2) makes a metal-to-metal grinding sound for 60-90 seconds. After warm-up, a steady tick on the right side of the engine while running. I contacted GM and they said, \" this was normal at start up\". however, with me being a mechanical engineer, all of my school and working experience tells me anything grinding metal to metal is not good.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11651816,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/30/2025","dateComplaintFiled":"03/31/2025","vin":"1GTP9EELXMZ","components":"ENGINE","summary":"Engine seized and now we need a new motor","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11651041,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/18/2023","dateComplaintFiled":"03/27/2025","vin":"1GTU9FEL8MZ","components":"POWER TRAIN,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 30 MPH, there was an abnormal knocking sound coming from the engine compartment, after which the vehicle lost motive power. The contact was able to pull over to the side of the road. No warning lights were illuminated. The vehicle was taken to a dealer, who determined that the engine needed to be replaced. The vehicle was repaired. The contact stated that prior to the engine failure, the transmission was replaced. The manufacturer was not notified of the failure. The failure mileage was approximately 20,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11651169,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/19/2025","dateComplaintFiled":"03/27/2025","vin":"3GTU9CET5MG","components":"POWER TRAIN","summary":"I own a 2021 GMC Sierra 1500 Duramax diesel. At around 60,000 miles, I received an engine coolant system alert through OnStar and retrieved a P1098 trouble code, which indicates a failure in the coolant control valve. This issue causes the engine fan to run excessively, creating loud noise, reduced fuel economy, and possible drivability concerns. After researching owner forums and talking to multiple service departments, I discovered this is a widespread problem among 2020\u20132022 GMC/Chevrolet Duramax 3.0L diesel owners. In many cases, the coolant control valve is failing prematurely, and the replacement part is on national backorder, suggesting a high failure rate. GM has not issued a recall or service bulletin to address the issue, and many customers are being told to pay out of pocket despite the systemic nature of the failure. This component is tied to engine temperature control, and failure could pose a safety risk if the engine overheats or derates unexpectedly. I am filing this complaint to document the issue and request NHTSA investigate this as a potential defect.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11650551,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/10/2025","dateComplaintFiled":"03/25/2025","vin":"3GTU9EET9MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 24V797000 (Power Train); however, the dealer was unable to complete the recall and returned the vehicle to the contact in a worse condition than when the contact had dropped the vehicle off at the dealer. The contact stated that while attempting to drive the vehicle off the dealer parking lot, the check engine and reduced power warning lights flashed on the instrument cluster. The contact stated that he returned the vehicle to the dealer and was informed that the vehicle could not be repaired. The manufacturer was not made aware of the issue. The failure mileage was approximately 114,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11649903,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/02/2021","dateComplaintFiled":"03/22/2025","vin":"1GTP9EEL6MZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"My truck was part of a GM buyback program where GM Corporation bought the truck back to fix it around Aug 7th 2023 for engine problems. I am reporting this because I do not believe that GM ever reported this to NTSHA. There are also other issues happening at the same time period that should be looked into that may or may not be coincidences. At or before 10,126 miles the truck started having engine lifter and other engine issues. General Motors will not tell me exactly what was done other than lifters according to paperwork supplied. It may have had other issues like a spun bearing but it was never disclosed. Can NTSHA please look into this and information is found, could I please get the records. I asked for the paperwork of what was done while GM owned and troubleshot all the problems. I was told that information is only available to the original owner and I could not have it. It is very frustrating when General Motors Corporate use owner\u2019s personal data as a way to hide what was done and not have to disclose required information. I am asking for service records while General Motors owned it and the service records they did to fix it. I know that there are many more engine problems that are not documented on the vehicle summary. GM will not buy back the truck over a few lifter issues. The truck was later fixed and Art Gamblin Motorsv in Enumclaw Wa, purchased it. I am told it is fixed but have no real paperwork proving this, I was able to purchase an extended warranty just in case. There is also quite a few of battery and electronic issues that do not seem normal with the car as well. The battery was replaced at 10,126 miles at the same time as the engine issues and the battery module was replaced at 29,536 miles. At 29,875 miles and 29,965 some type of communications module and On Star module was replaced. This is the around the same time as the truck was having engine issues and was eventually bought back for what is called \u201cengine noise\u201d.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11649330,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2025","dateComplaintFiled":"03/19/2025","vin":"3GTP9EEL0MG","components":"ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving 60 MPH, there was an abnormal knocking sound coming from the engine compartment, after which the vehicle lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who determined that the engine had seized. The contact was also informed that the fuse box needed to be replaced. The vehicle was repaired, but the failure reoccurred. After investigating the failure, the contact related the failure to NHTSA Action Number: PE25001 (Engine, Engine and Engine Cooling). The manufacturer was not notified of the failure. The failure mileage was 63,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11649347,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2025","dateComplaintFiled":"03/19/2025","vin":"1GTR9CED6MZ","components":"POWER TRAIN","summary":"Truck started to lose power or slip on quick acceleration on highway Truck would jolt or shudder. 63000 miles. Dealer diagnosed truck needs Torque converter and a valve body replacement. No warning lights Contacted GM. Have a case number, was told to take to dealer. It\u2019s at dealer now, getting repaired. I\u2019m wondering if GM has a bigger problem with transmission recall","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648931,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/24/2025","dateComplaintFiled":"03/18/2025","vin":"3GTU9FEL6MG","components":"POWER TRAIN","summary":"See attached document for complaint.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648979,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/14/2024","dateComplaintFiled":"03/18/2025","vin":"3GTP9EEL6MG","components":"POWER TRAIN,ENGINE","summary":"After 2 years of owning the vehicle, after every oil change, it would indicate low oil just before an oil change causing for us to add an additional a quart of oil to keep it running smoothly. We informed the service technician of the situation on multiple occasions and no further inspection was completed, and just an oil change was serviced. After a few months we noticed the engine was running rough and a white smoke coming out of the exhaust on acceleration then the check engine light came on. We brought the car to get tires replaced and to service the check engine light, the technician stated that the check engine light a failure in the catalytic converter. We brought the vehicle to the local GMC service center, where they indicated that the we required a replacement engine because of catastrophic engine failure. We reported that the check engine light was due to catalytic converter failure. The service technician ensured that the priority was the replacement of the full engine not indicating what was the main cause of engine failure stating that the catalytic converter could have led to the failure of the engine as well. We replaced the engine, and after 3 months of vehicle being in the shop the engine was replaced. Three days after receiving the vehicle, a check engine light came on. We did not drive the vehicle until we had to return it back to the service center. The service technician stated that it is due to a lack of communication from the engine to the ECU. The technician called the following Monday stating that the check engine light was due the catalytic converter. We told the technician that was the primary reason that the customer the vehicle in the first place. We asked if there was an alternative to replacing the catalytic converter since we already paid 12k for the engine replacement. We asked if they had taken apart the catalytic converter to confirm its not a sensor issue. They replied that the codes indicates its the whole converter.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648735,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/17/2023","dateComplaintFiled":"03/17/2025","vin":"1GTU9EET1MZ","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving approximately 75 MPH, the rear wheels locked up. The failure had occurred on several occasions. The contact stated that several unknown warning lights were illuminated. The vehicle was towed to a dealer where it was diagnosed and determined that a software update was needed. The vehicle was repaired under an NHTSA Campaign Number: 24V797000 (Power Train); however, the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 35,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648558,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/16/2025","dateComplaintFiled":"03/16/2025","vin":"1GTP9EEL4MZ","components":"ELECTRICAL SYSTEM","summary":"Multi functional tail gate will open on its own while driving. I have had this repaired by gm 3 times and still have issues. This problem is currently on the recall list for 2500 hd series trucks and the 1500 series trucks in Canada but not on recall in united states. This problem poses a life threatening problem while on the road due to contents of truck possible becoming projectiles to other drivers due to tailgate opening on its own .","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648442,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":1,"numberOfDeaths":0,"dateOfIncident":"02/19/2025","dateComplaintFiled":"03/15/2025","vin":"1GTR8BEK6MZ","components":"AIR BAGS","summary":"Airbag system did not deploy but smoke in cabin during a crash. Video of front, rear and inside cabin shows the rear end passenger side impact at an estimated 45-50 MPH. I saw smoke in cabin, disturbed with anxiety after crash waiting for bags to deploy accidentally. The airbag deployed red light illuminated notifying an airbag deployment. I received a GM message through the vehicle report application stating that my airbag system malfunctioned and I needed to take the vehicle to a service department for repair as soon as possible. This crash was a total loss of the GMC Sierra, this was how hard the vehicle was hit. Why did the airbag system smoke? Why did the airbags not deploy? Why did I receive a Malfunctioning Airbag system message from GMC? Video shows that if the airbag system would have deployed on the steering wheel I would have had less head and neck trauma when whipping backward and then forward.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11647948,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/18/2025","dateComplaintFiled":"03/12/2025","vin":"3GTU9FEL1MG","components":"ENGINE","summary":"I was driving 50mph when my check engine light started flashing. The engine had very little power and there was a new consistent engine knock. I took to GMC dealership and they informed me that half of the engine lifters failed and a pushrod was bent. There was no warning prior to the incident. I have had the vehicle serviced only at the dealership and have only used premium fuel. The truck has 88,000 miles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11647961,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/06/2025","dateComplaintFiled":"03/12/2025","vin":null,"components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"[XXX], I PURCHASED A 2021 GMC SIERRA 1500 FROM FAULKNER CHEVROLET IN BETHLEHEM, PA. I TEST DROVE THE VEHICLE BEFORE PURCHASE AND IT SHOWED NO INDICATION OF ANY MECHANICAL ISSUES THAT I WAS ABLE TO DETECT. I WAS SHOWN BY THE DEALERSHIP THE CARFAX AND WAS INFORMED THAT THERE ARE CURRENTLY NO RECALLS FOR THE VEHICLE. I WAS LED TO BELIEVE THAT THE VEHICLE WAS IN GOOD CONDITION AND SAFE TO DRIVE AND, THEREFORE, AGREED TO PURCHASE THE VEHICLE FOR THE AFOREMENTIONED PRICE (INCLUDING TAX AND TITLE FEES). I PURCHASED THE VEHICLE WITH 60,077 MILES ON IT, AND AFTER DRIVING IT NORMALLY FOR ONLY 5 DAYS (ON [XXX]) IT BROKE DOWN AND I WAS STRANDED ON THE HIGHWAY 16 HOURS FROM HOME. I WAS ABLE TO GET THE VEHICLE TOWED AND PAID $1,200 FOR THE STARTER TO BE REPLACED, WHICH IS WHAT THE MECHANIC SUGGESTED BUT THIS ENDED UP BEING ENTIRELY UNNECESSARY AS THE REAL ISSUE WAS DUE TO A CATASTROPHIC DEFECT IN THE ENGINE. AFTER THE STARTER WAS REPLACED, I WAS DRIVING THE VEHICLE ONLY A FEW DAYS LATER (ON [XXX]) AND IT SUFFERED A CATASTROPHIC ENGINE FAILURE WHILE DRIVING 70MPH ON THE HIGHWAY. I LOST CONTROL OF THE VEHICLE AND NEARLY GOT IN A COLLISION WITH ANOTHER VEHICLE. I WAS ABLE TO GET THE VEHICLE TO THE NEAREST AUTO SHOP AND AFTER INSPECTING THE VEHICLE THEY INFORMED ME THAT THERE IS A SERIOUS ENGINE ISSUE RELATING TO A SEIZED BEARING AND THE ENGINE WILL NEED TO BE REBUILT ENTIRELY. AT THIS POINT IT HAD BEEN ONLY 12 DAYS SINCE THE PURCHASE AND THE ODEMETER READ 61,662 (1,585 MILES DRIVEN SINCE PURCHASE). DUE TO THE FAULTY VEHICLE, I WAS FORCED TO PAY TO HAVE THE VEHICLE SHIPPED FROM THE LOCATION WHERE IT BROKE DOWN TO THE DEALERSHIP WHERE I ORIGINALLY BOUGHT IT (AROUND $1,200). FAULKNER CHEVROLET KNOWINGLY SOLD ME AN UNSAFE VEHICLE THAT THEY WERE WELL AWARE HAD A DEFECTIVE 6.2L V8 ENGINE. THIS DEFECT IS CURRENTLY UNDER INVESTIGATION BY THE NHTSA AND FAULKNER CHEVROLET PURPOSEFULLY OMMITTED THIS CRUCIAL INFORMATION UNTIL AFTER THE VEHICLE WAS SOLD. CLEARLY, THIS IS AN UNETHICAL BUS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11647217,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2025","dateComplaintFiled":"03/09/2025","vin":null,"components":"ENGINE","summary":"I've now had 2 engines fail catastrophically, One at 19,191 miles and the second failure at 80,661. Both are the 6.2L engine. The first had crank bearings that were black. The second I was not informed of the cause but that it was seized leaving me stranded on the roadside.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11646152,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/16/2025","dateComplaintFiled":"03/04/2025","vin":"3GTP9EEL2MG","components":"ENGINE","summary":"While driving the vehicle shut off in the middle of the roadway. It sat in the road till it got towed. Brought it to the dealership where it was purchased and they said the engine was blown. Themis vehicle is equipped with the 6.2 motor. It happened February 16th. The dealership confirmed the engine failed. It is siting currently at the dealership and could be available for inspection.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11646249,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/06/2024","dateComplaintFiled":"03/04/2025","vin":"1GTU9FEL6MZ","components":"ENGINE","summary":"Engine failed and had to be replaced. GMC was absolutely no help had to bring to local gas station where i had to pay almost $12,000 to get it fixed. The truck has been in shop frequently for oil issues with this motor but GMC just jerks you around. I am in sales and need my vehicle to support my family","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11645470,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/21/2025","dateComplaintFiled":"02/28/2025","vin":"3GTP9EEL7MG","components":"ENGINE","summary":"My Vehicle went into the dealer on January 21, 2025. My initial complaint was tapping noise, I was advised that my vehicle had collapse lifters issue several days later I was informed that they have found metal shards in the lower end and found a bad crank bearing and crank. I was told that the vehicle will need an engine replacement, and that the engine is on back order with no date of fulfilment. My vehicle has 66,700 miles I was advised was out of warranty and that GM will only cover half of the estimated cost of 11,000.00.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11645484,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/24/2025","dateComplaintFiled":"02/28/2025","vin":"1GTU9DED2MZ","components":"LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the tailgate opened unintendedly while driving, and while the vehicle was parked. The contact stated that the failure had been recurring. The vehicle was taken to the dealer but was not diagnosed or repaired. The contact related the failure to GM Campaign Number: N232426400. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 76,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11645665,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/23/2025","dateComplaintFiled":"02/28/2025","vin":null,"components":"POWER TRAIN,ENGINE","summary":"Subject: Complaint Regarding Recurring Engine Failure in 2021 GMC Sierra AT4 Dear National Highway Traffic Safety Administration, I am writing to formally express my concern regarding recurring engine failures in my 2021 GMC Sierra AT4 (6.2L engine). At 23,000 miles, the vehicle suffered a complete breakdown due to failure of cylinder #8, lifters, and push rods. General Motors covered the repairs at that time. However, at 97,000 miles, the exact same issue reoccurred, resulting in significant engine damage. The dealership diagnosed a misfire in cylinder #8, leading to the removal of the right cylinder head, where they found a bent push rod, spun lifter, damaged camshaft lobe, and lifter roller. The repair estimate totals $9,746, but GM has refused to cover the costs, despite us having an extended warranty purchased from the dealership. This recurring failure raises serious concerns about engine reliability and manufacturing defects in General Motors vehicles. I urge the NHTSA to investigate this issue, as multiple GMC and Chevrolet owners have reported similar problems with the 6.2L engine lifter and camshaft system. This is not just a costly repair but a potential safety hazard that GM has failed to properly address. Thank you for your attention to this matter. I appreciate any guidance or action the NHTSA can take to hold GM accountable and ensure consumer protection.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11645667,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/15/2024","dateComplaintFiled":"02/28/2025","vin":null,"components":"ENGINE","summary":"AFM lifters failed which caused cam shaft to collapse under 35k miles. Had to remove while front end to repair","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11644825,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/10/2024","dateComplaintFiled":"02/25/2025","vin":"3GTU9DET6MG","components":"ELECTRICAL SYSTEM","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the transmission slammed into gear and the rear wheels locked up. In addition, the vehicle decelerated independently. The vehicle was driven to the shoulder of the road and turned off. The vehicle was restarted, and the contact noticed that the vehicle was independently reset. The vehicle was taken to the dealer where it was diagnosed with a failed wiring harness. The contact was informed that the wiring harness needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 60,129.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11644833,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/14/2025","dateComplaintFiled":"02/25/2025","vin":"3GTU9FEL0MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at approximately 80 MPH, the vehicle stalled and failed to return to normal operation. No warning light was illuminated. The vehicle was towed to be diagnosed. The contact was informed that the rod bearings needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 134,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11644944,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/29/2025","dateComplaintFiled":"02/25/2025","vin":"1GTU9CED0MZ","components":"VISIBILITY/WIPER","summary":"Wipers work intermittently","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11644501,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/21/2025","dateComplaintFiled":"02/24/2025","vin":"3GTP9EEL6MG","components":"POWER TRAIN,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 55 MPH, the vehicle started making a knocking sound. There were no warning lights illuminated. The contact picked up his son from school and drove the vehicle to the dealer. The contact stated that while depressing the accelerator pedal, the knocking sound became louder, and the vehicle was losing motive power. The vehicle was taken to a dealer and diagnosed with engine failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 58,522.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11643965,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/01/2025","dateComplaintFiled":"02/20/2025","vin":"1GTP8DED5MZ","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at various speeds up an incline, the vehicle was vibrating and shuddering. The failure persisted over time. There were no warning lights illuminated. The vehicle was taken to the local dealer, but the vehicle was not diagnosed or repaired. The vehicle was taken to a transmission shop, and it was determined that the transmission needed to be replaced. The manufacturer was not contacted. The approximate failure mileage was 68,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11642483,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2025","dateComplaintFiled":"02/13/2025","vin":"3GTU9DEL6MG","components":"ENGINE","summary":"While driving on the highway the engine 6.2 GM seized suddenly at high speed. The truck shut off completely and left rolling without any control. I had work my way accross lanes to the breakdown lane. While doing so I was almost hit by an 18 wheel trailer truck, who luckily was able to change lanes to avoid hitting me. The reason I was almost hit was because of my low speed since I had now power or acceleration.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11641910,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2022","dateComplaintFiled":"02/11/2025","vin":"3GTU9CED7MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds and depressing the accelerator pedal, the vehicle hesitated to respond and shuddered. The vehicle was taken to the dealer, where the fuel tank was cleaned, and the contact added fuel treatment to the fuel, as recommended by the dealer; however, the failure recurred. The contact stated that while driving from a complete stop, uphill, and while driving 50 MPH, the vehicle shuddered and experienced erratic transmission shifting. The check engine warning light was illuminated. The vehicle was taken to Dixie Buick GMC (14565 S Tamiami Trl, Fort Myers, FL 33912); where it was determined that the vehicle was experiencing a abnormal shudder. The dealer replaced the transmission fluid; however, the failure persisted. The contact stated that the failure had become progressively worse and mostly occurred at 1,200 RPM. The dealer was contacted, and an appointment was scheduled for diagnostic testing. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 24V797000 (Power Train); however, the VIN was not included. The manufacturer was notified of the failure. The failure mileage was approximately 8,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11641660,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/05/2022","dateComplaintFiled":"02/10/2025","vin":"3GTU9FEL6MG","components":"ENGINE","summary":"I purchased a new 2021 GMC Sierra Denali with a 6.2L engine on 03/05/2022. On November 10, 2022, I started the truck, and the engine seized up. The truck had 9018 miles on it and 274 engine hours. The main bearings and possibly the connecting rods bearings was the problem. On January 27, 2023, I finally got a new engine installed in my truck. I had to pay for the repairs.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11641569,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/30/2024","dateComplaintFiled":"02/09/2025","vin":"1GTU9FELXMZ","components":"ENGINE","summary":"Driver side lifters collapsed and push rods failed on freeway without warning at 12900 miles on truck.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640645,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2025","dateComplaintFiled":"02/04/2025","vin":"3GTU9DETXMG","components":"SUSPENSION,ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was an abnormal clunking sound coming from the rear suspension. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the rear suspension. The vehicle was repaired, but the failure reoccurred 4,000 miles later. The contact stated that while reversing, the contact heard an abnormal clunking sound coming from the rear suspension. The contact also stated that there was also a strong antifreeze odor permeating the interior of the vehicle. The vehicle was taken back to the dealer, but not yet diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 38,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640251,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/19/2025","dateComplaintFiled":"02/02/2025","vin":"3GTP9EEL7MG","components":"POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE","summary":"On the morning of 1/19/25, my 2021 GMC Sierra 6.2L AT4 went into limp mode heading south on HWY 207 in Leavenworth, WA at approximately 60 m.p.h. Fortunately, I was able to avoid a rear end collision. I quickly turned the truck off in the middle of the road and restarted it with a CEL. When I returned home almost 180 miles away, my local mechanic diagnosed a code P0303 and cleared it. Since, the truck has continued to shutter at various speeds without throwing a code. It is currently at Haselwood GMC in Bremerton, WA being scanned, recorded, and findings set to GM waiting for resolve. I have notes, exact dates, times, call records, return voice mail messages, and dealership personnel spoken to, etc. The dealer\u2019s lead technician and I were able to replicate the shutter on a road test together on 1/27/25 at 3 p.m. after having driven just 10 miles. During my visit on the morning of 1/30/25, the lead technician stated he has since been able to replicate the shutter seemingly getting worse. I was strongly encouraged by the service manager, service writer, and lead technician their collective \u201cpersonal recommendation\u201d was to not take the truck back. Haselwood has had the truck since 1/27/25. Still awaiting a response and resolution.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640126,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/01/2023","dateComplaintFiled":"02/01/2025","vin":"3GTP8DED1MG","components":"ENGINE","summary":"lifters in the left and right side snapped into 3 pieces. Caused engine failure happened 2 different times. All before 50,000 miles. The first time was before 30,000 miles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639897,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/04/2025","dateComplaintFiled":"01/31/2025","vin":"1GTP9EEL3MZ","components":"ENGINE","summary":"Engine failure","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639929,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/02/2024","dateComplaintFiled":"01/31/2025","vin":"3GTU9EET6MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 24V797000 (Power Train); however, the contact believed that the remedy offered would cripple the vehicle and interfere with his work. The contact works in Alaska and the remedy involved the transmission being limited to fifth gear, preventing the possibility of a wheel lock up condition, which could occur while downshifting from eighth gear. The manufacturer was made aware of the issue and advised the contact to find a dealer that could repair the transmission. The contact had not experienced a failure. Parts distribution disconnect.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639736,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2024","dateComplaintFiled":"01/30/2025","vin":"3GTP9EEL7MG","components":"POWER TRAIN","summary":"The engine locked up with no warning I called the dealership and they said it was out of warranty as it has 77000 miles. upon further investigation I found that the front main bearing on the engine had gone bad and caused the engine to lock up. GMC refused to accept any responsibility for the failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639324,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/11/2025","dateComplaintFiled":"01/29/2025","vin":"3GTU9CET5MG","components":"SERVICE BRAKES,ENGINE,FUEL/PROPULSION SYSTEM","summary":"We have had several times where we are on highway and our truck like slams on the brakes causing us to lose control. It was a recall on it and GMC fixed it and within the same week of them fixing it it happened 3 times back to back. Making my truck to force another car to steer out of my way and actually went off the highway. Thank god it was just dirt snd he didn\u2019t get hurt or anything. But I am scared to even drive my vehicle! It starting Happening for about a year now. And it would only do it like every couple months but now it\u2019s has done it 6 times in the last 2 months!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639415,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2025","dateComplaintFiled":"01/29/2025","vin":"3GTU9DEL0MG","components":"ELECTRICAL SYSTEM","summary":"Assure Guard (877-831-3077) Contract number [XXX] GMC Customer Care Melissa (866-790-5600 Ext [XXX] ) Case#[XXX] Dealership: Phil Moore GMC (601-956-0150) My truck is barely 4 years old. I should not have this problem . Why is it no one guarantee the product they make? I paid too much money for this vehicle financing it as a new truck. I paid 766.95 to replace/install the shark fan antenna on the roof of my truck because it literally came loose on his own. No one (dealership, GMC, Assure Guard) would assist with repairs. The shark fin antenna started leaking water and it was wobbly where, it was no longer sealed on the body of the truck. Water leaking through out the ceiling/roof. I didn\u2019t do anything to cause this! GMC Customer Care refused to refund nor, help with the cost of repair. I tried to file a claim with my extended warranty company(Assure Guard) contract number [XXX] - they refused to cover the antenna. I have owned several 1500 truck models, and none of them has had the antenna to fall off the vehicle. I had to return to Phil Moore, GMC a second time because they did not properly seal the antenna. This caused the whole interior of my truck to be drenched with rainwater. I am upset with the dealership, GMC and my extended warranty(Assure Guard) because I spent too much money on my vehicle to have this happen and I would like to be refunded. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11638979,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/15/2024","dateComplaintFiled":"01/28/2025","vin":"3GTP9EEL2MG","components":"ENGINE","summary":"Engine knocking and metal in oil. Been to the dealership and even though it's under warranty they will not act on it due to no check engine light present. It's making it difficult to trust driving the vehicle anymore because of the thought of the engine shutting down without warning anytime. This complaint is documented and confirmed by a dealership. They made me pay the check out fee and recommended i keep driving the vehicle until the motor locks up.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639072,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/16/2025","dateComplaintFiled":"01/28/2025","vin":"3GTU9BET2MG","components":"UNKNOWN OR OTHER","summary":"Transmission, rear wheel lock up issue. Dealer performed recall notice work. Truck still has same issue after dealer visit. When issue starts, feels like you ran over something in the road, All warning lights are on, loss of power to engine and the engine did quit working once. Door locks continue to cycle repeatedly, multiple screen warnings appear on dashboard. It appears that everything that could go wrong happens at once. Have heard transmission valve control modules is a major problem with GM 10 speed transmissions.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639116,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/23/2025","dateComplaintFiled":"01/28/2025","vin":"3GTP9EEL2MG","components":"ENGINE","summary":"I was notified at the dealership that my truck had metal in the oil that is causing the oil sensor pump to send a ln engine code. The fix is a new engine.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11638208,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/23/2025","dateComplaintFiled":"01/24/2025","vin":"1GTU9FEL0MZ","components":"ENGINE","summary":"Lifter noises, error codes for misfires, lost power","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11638438,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/13/2024","dateComplaintFiled":"01/24/2025","vin":"3GTU9FEL9MG","components":"WHEELS,ENGINE","summary":"Le Moteur Le 13 d\u00e9cembre 2024 le v\u00e9hicule arr\u00eat\u00e9 subitement je tente de le red\u00e9marrer et ne demarre plus \u00e0 plusieurs reprises je branche un obd2 et cela indique crank sensor j'envoie le v\u00e9hicule au dealer et me dise qu'il y a quelque chose dans la base et aujourd'hui ils y est encore Les pneus Certains Flan de pneu de ce v\u00e9hicule sont fissures tous le tour des roues","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637375,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/20/2023","dateComplaintFiled":"01/21/2025","vin":"3GTP9EEDXMG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at approximately 20 MPH, the vehicle lost motive power. The contact stated that the accelerator pedal was depressed; however, the vehicle failed to respond as needed. The contact moved the transmission lever from drive(D) to neutral(N) to reverse(R) several times and was able to drive back to the residence. The contact stated that the check engine warning light was illuminated. The contact had the vehicle towed to a local dealer. The dealer diagnosed the failure and determined that the transmission control valve had failed and needed to be replaced. The vehicle was repaired; however, the contact stated that the failure had reoccurred. The vehicle was taken back to the same dealer who advised that the transmission control valve had failed, but the parts needed to complete the repair were on back-order. The vehicle was not repaired. The contact had asked the dealer what the possibility of the same failure reoccurring after the second replacement of the control valve and the dealer advised that the valve would fail again. The vehicle was awaiting repair. The manufacturer was informed of the failure. The failure mileage was 27,676.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637031,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/14/2024","dateComplaintFiled":"01/20/2025","vin":"1GTP9EEL8MZ","components":"ENGINE","summary":"Multiple injector and lifter failures. Occurred on 2 separate occasions. Taken to dealer the first time. Told injector failure and lifter failure. Less than a week later experienced multiple lifter failures. Taken to dealer again for repair. They only replaced some of the affected lifters, even though TSB from GM recommends replacement of all of them. Currently awaiting failure of additional components not replaced. There was no warning of either occurrence. Was only driving 45 mph on my way home the first time. The second occasion was on initial start up at Dr office. Opened a claim with GM on my own, as dealership was negligent or unwilling to contact GMC about these failures, even though I provided them with the appropriate TSB directly from GM.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637055,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/11/2024","dateComplaintFiled":"01/20/2025","vin":"1GTR9BED9MZ","components":"POWER TRAIN,ENGINE","summary":"We had to replace the transmission at 70,000 miles even though problems were reported to the dealer at 53,340. This repair costed $2300 on a 1 year old truck. Then we needed to replace a solenoid circuit which was not covered under warranty. We repaired this 2x (the second time covered). Then at 147,000 miles 9/24, there was a cylinder misfire which bent the push rod and collapsed lifter. This engine repair cost $8300.00 dollars. Who has to replace an engine on a truck that's 3 years old. This is a defect. Please help us. We have spent over $10,000 on repairs. We faithfully do our changes and service.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637120,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/16/2025","dateComplaintFiled":"01/20/2025","vin":"1GTU9DED9MZ","components":"ENGINE","summary":"I got off work started my truck heard a few pops. As I was driving the vehicle started jerking like the brakes were being applied. Then I noticed a yellow engine light and a ESC light come on. I pulled over to check vehicle and all the lights went off. Dealer was just a few miles away. So I started back up and drove to dealer. On the way to dealer vehicle started a tapping noise. Then a new message flashed something about my steering will be affected. I got I to dealer safely. Where I left the truck for repairs.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637133,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2025","dateComplaintFiled":"01/20/2025","vin":"3GTP9EEDXMG","components":"POWER TRAIN","summary":"The control valve system on my 2021 gmc has malfunctioned and this is the second time, currently sitting at Nelson GM Dealer in Fergus Falls MN. I have to drive back to TN as thats where I live and the mechanic said this issue will happen again. This vehicle hasn't had recalls but I believe it was missed since this is the second time with this same issue. This is a GM wide issue as I have researched.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11636911,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/07/2021","dateComplaintFiled":"01/19/2025","vin":"3GTU9CED1MG","components":"ENGINE","summary":"at 8500 miles the engine had lifter go out while I was driving down the highway cause to truck to vibrate and becoming on unsteady causing me to pull over in the middle of traffic. later at 36500 miles it had another lifter go out this time I was driving home at a slower speed but still cause me to have to pull over vert fast as the vehicle became unsteady and vibrated causing all the alarm to come on. Both times the truck was fixed under warranty nut they replaced it with the same parts that are causing the problems. Soon my truck will be off warranty and this will come out of my pocket.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11636930,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/11/2021","dateComplaintFiled":"01/19/2025","vin":"3GTU9FEL6MG","components":"ENGINE","summary":"I purchased this vehicle new in 2021. It is an Ultimate Denali trim level with a 6.2 engine. Within the first year, the driver's side head on the engine had a massive failure with only 7,000 miles. I started up the vehicle and was parked idling briefly when several light came on along with a rough idle and some exhaust smoke. I contacted On Star, who could not diagnose the problem. The vehicle was disabled and ended up being towed to the dealer, where it was being repaired for 10 days. The lifters, valves and push rods were replace. The mechanic admitted there was an internal GM problem with the 6.2 engine. I asked for the same repair be made on the passenger side head. The GM dealer refused, knowing of the faulty factory installed parts. The polished tailpipe tips were not replace and were stained by the black exhaust. They are still stained this day. I purchased this vehicle for my retirement to tow my RV. Now, I have been reluctant to travel because of the other head letting go on me somewhere out west, operating under a work load. I know of two other people who purchased new GM vehicles with the 6.2 engine, who experienced the same failure, with around the same mileage on their vehicles.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11636975,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/02/2024","dateComplaintFiled":"01/19/2025","vin":"1GTU9FEL8MZ","components":"ENGINE","summary":"Engine failed due to a loss of oil pressure. Rod bearing failed which cause metal to be dispersed throughout the engine causing the engine to seize from a sudden loss of oil pressure from oil pump failure. Engine was replaced in June 2024 failure happened in May 2024. While driving a system message came on DIC that stated pull over immediately to prevent engine damage and no oil pressure. I was driving uphill with cars on my right in the #2 lane. Engine shut off before I could pull over resulting in decreased braking power and a lack of steering. I almost hit 2 vehicles trying to pull over to get my family to safety on the right hand shoulder. I couldn\u2019t pull over to the left hand shoulder as there was a guardrail in the way. When I got my vehicle pulled over the only thing that stopped my vehicle from going over the cliff was a bunch of wood chips on the right hand shoulder. From the time the warning lights came on to the time the engine shut off and seized was maybe 5 seconds. It took 31 days to replace the engine and the dealership did an inspection on the engine. There was absolutely no warning there was any problems until the lights came on. My wife and [XXX] and [XXX] were in the vehicle at the time this happened. It was so dangerous where we broke down California Highway Patrol stayed behind my vehicle with its lights on. It was also a fire hazard with the exhaust sitting on the dry bark. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11636842,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/18/2025","dateComplaintFiled":"01/18/2025","vin":"1GTP9EEL3MZ","components":"POWER TRAIN,ENGINE","summary":"L87 engine problems. I have had failed lifters, on top of transmission issues and a current oil consumption issue where I have to add two quarts of oil (sometimes more) without any indication of low oil. I took my vehicle into the local dealership and the technician asked if I had gotten any low oil indicator and I stated no. He proceeded to tell me it had little to no oil in it. Imagine this at highway speeds and sudden engine seizure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11636307,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/16/2025","dateComplaintFiled":"01/16/2025","vin":"3GTP9AEK1MG","components":"POWER TRAIN","summary":"Transmission has a hard shift when coming out of each gear. 2nd to 1st shifts hard and jolts entire vehicle a head. Feels like a slip or difficulty in shift.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11633210,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/20/2024","dateComplaintFiled":"12/30/2024","vin":"3GTU9FEL9MG","components":"ELECTRICAL SYSTEM","summary":"my truck keeps having this same issue since [XXX], always take it to team Gillman second august 26 same reason they replaced the battery but is a manufacturing defect while i am driving stops out of sudden AND THIS IS THE THIRD TIME THEY SUPPOSED TO CALL ME I HAVENT RECEIVE NO CALL IS AT TEAM GILLMAN SAME REASON ONLY HAS 18000 MILES MY NAME IS [XXX] CELL [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11632607,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/27/2024","dateComplaintFiled":"12/27/2024","vin":"1GTR9CEK3MZ","components":"ELECTRICAL SYSTEM,LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds, the tailgate opened unintendedly. No warning light was illuminated. The vehicle was taken to the dealer but was not diagnosed or repaired. The dealer informed the contact that the VIN was not included in GM Campaign Number: N232426401. The manufacturer was not notified of the failure. The failure mileage was approximately 57,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11631966,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2024","dateComplaintFiled":"12/21/2024","vin":"3GTP8DETXMG","components":"POWER TRAIN,SERVICE BRAKES,ENGINE","summary":"I received a notice of a recall for a known problem with GMC transmissions. it is very well known that these transmissions lock up and cause problems with braking and can cause the vehicle to slide off the road when the tires lock up. it also causes hard shifting, which I have experienced. GMC said they will not fix the transmission, they instead will add a device to monitor the transmission, so when the transmission locks up and causes an accident, it will let me know that it was the transmissions fault!!! How is this legal? they will let me know that their transmission caused the accident after the fact? why not fix it? typical of government to do nothing about safety... and instead make laws that allow big corporations and government to make money off of peoples deaths!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11631857,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/19/2024","dateComplaintFiled":"12/20/2024","vin":"3GTU9DET7MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds and downshifting, the rear wheels locked up with the parking brake warning light flashed on the instrument panel. The vehicle would resume normal operation soon after the failure. The vehicle was taken to a dealer where the contact was informed that there was a pending NHTSA Campaign Number: 24V797000 (Power Train) on the vehicle for the failure. The contact was informed that there was a temporary fix on the vehicle to repair the defect. After the temporary fix was performed, the contact experienced the failure twice within a week. The contact received a call that the permanent fix was available; however, soon after the repair was performed, the failure immediately occurred upon leaving the dealer. The manufacturer was notified of the failure, and the contact was informed that he would receive a callback. The vehicle was not repaired. The failure mileage was approximately 75,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11631416,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/16/2024","dateComplaintFiled":"12/18/2024","vin":"1GTU9FEDXMZ","components":"LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 40 MPH, the message that the tailgate was opened was displayed, and the contact became aware that the tailgate had opened. The contact pulled over to the right side of the road to close the tailgate. The vehicle was not taken to an independent mechanic or dealer to be diagnosed or repaired. The contact stated that the VIN was not included in NHTSA Campaign Number: 24V060000 (LATCHES/LOCKS/LINKAGES). The manufacturer was notified of the failure and opened a case and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 41,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11630867,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/16/2021","dateComplaintFiled":"12/16/2024","vin":"3GTU9EET4MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 24V797000 (POWER TRAIN); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that the transmission was shifting hard while driving. The local dealer was notified of the failure. The cause of the failure was not yet determined. The manufacturer was not made aware of the issue. The failure mileage was 120,000. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11630356,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/05/2024","dateComplaintFiled":"12/12/2024","vin":"3GTP8DED8MG","components":"POWER TRAIN","summary":"transmission has a shudder when accelerating and after shifting through all gears (8speed) during cruise mode when going on an incline as in overpass it starts to shudder and seems like it is trying to find the right gear to go into .","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11628909,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/07/2024","dateComplaintFiled":"12/04/2024","vin":"1GTP9EEL1MZ","components":"ENGINE","summary":"The engine blew up at 67,000 mile while driving down the road. Not sure what happened but there was no warning signs at all. The dealership said they couldn\u2019t know for sure what happened but most likely the oil pump went bad. I have spoken with a few people that have had this same problem with the 6.2 liter engine. It needs to be looked into because this could have caused a major accident on the highway.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11628321,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/13/2024","dateComplaintFiled":"12/02/2024","vin":"3GTP9EED4MG","components":"STEERING,SUSPENSION","summary":"Front upper control arm ball joint separated from socket.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11625363,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2024","dateComplaintFiled":"11/14/2024","vin":"3GTP9AEH3MG","components":"ELECTRICAL SYSTEM","summary":"When accelerating and shifting into drive, the vehicle is experiencing a lag when moving forward. The rear wheels are not latching into the designated gear. When vehicle comes to a complete stop, it will not accelerate and does not want to move. The problem has been reported and there are multiple recalls on similar vehicles of the same make and model. There were no warning symbols or notifications generated at the time of inspection.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11624929,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/13/2024","dateComplaintFiled":"11/13/2024","vin":"3GTU9CED6MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the rear of the vehicle was shuddering and shaking. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact stated that over time the failure became more persistent. The contact was concerned because two small children were seated in the rear of the vehicle daily. The manufacturer was made aware of the failure but provided no assistance. The contact referenced NHTSA Campaign Number: 24V797000 (Power Train); however, the contact was informed that the VIN was not included in the recall. The failure mileage was approximately 61,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11624856,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/12/2024","dateComplaintFiled":"11/12/2024","vin":"1GTP9EEL4MZ","components":"ELECTRICAL SYSTEM","summary":"The electronic tailgate switch is malfunctioning and opening on own. We brought in and paid 2 times to have repaired and now the third time has happened. It\u2019s appears this model is recalled in Canada but not US. Why is that when it\u2019s the same parts used and the HD models have also been recalled. Why is our truck not recalled for this?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11623863,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/24/2024","dateComplaintFiled":"11/06/2024","vin":"3GTP8DET9MG","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 24V797000 (Power Train); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11619922,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/11/2024","dateComplaintFiled":"10/15/2024","vin":"1GTP9EEL7MZ","components":"ENGINE","summary":"On memorial day weekend 2023 my truck ,2021 GMC Sierra AT4 was making a awful noise. I pulled over and vehicle died. had it towed and the warranty covered new engine replacement at 54678 miles(large deposit of metal in the oil pan). June of 2024 again, traveling out of town and pickup making terrible noise and shaking at 76651 miles. Replaced lifters in vehicle. October 11, 2024 took vehicle in for oil change, drove 25 miles and vehicle making terrible noise. Pulled over and pickup died. Had it towed to dealer and they are saying it needs a new engine. ( 87000 miles) they are saying its out of warranty. There seems to be a serious problem with this engine( 6.2) in all the research I am finding. I now have a pickup that I am still making payments on , that I cannot drive.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11618385,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/27/2024","dateComplaintFiled":"10/07/2024","vin":"3GTP9EEL4MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 45 MPH, there was an abnormal ticking sound coming from the vehicle. The contact stated that several unknown warning lights were illuminated. The vehicle was placed on a trailer and was taken to an independent mechanic who stated that the lifter and cam shaft needed to be replaced. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 133,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11618222,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/27/2024","dateComplaintFiled":"10/05/2024","vin":"3GTU9CED6MG","components":"STEERING","summary":"Getting shift to park safety warning, car is in park, and cannot move at all, Cannot start because vehicle does not believe it is in park. Have been stranded multiple times on this error.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11618063,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/28/2024","dateComplaintFiled":"10/04/2024","vin":"1GTU9CET2MZ","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"My vehicle was issued an OTA ( over the air update ) automatically, and the update failed, leaving the screen in my vehicle inoperable, with a message displayed stating \" Update failed return to dealer\" My vehicles radio/information system is now inoperable. The blue-tooth calling capability is also inoperable. This is a safety issue due to the fact that I am a resident of Minnesota and we have a law that states it is illegal to use your phone while driving. In addition, I am unable to receive severe weather alerts via the radio and do not have the ability to make phone calls in my vehicle in the event of an emergency since it is illegal to use my phone in MN while driving. This is a serious safety hazard The GMC dealer (Mills GMC in Baxter, MN ) that the vehicle is currently at has stated this is not a warrantable repair, even though my vehicle is under warranty. I have also contacted GM service directly and was told they would be willing to offer me \"rewards points\" There is an active recall for the same issue for other GM models of the same year. Recall # N202319250 Essentially, GM is pushing updates to vehicles without the owners consent, giving the owner no choice but to bring the vehicle to the dealership for a repair which they are calling \"wear and tear\" This is highly unethical and is making customers vehicles unsafe.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11617722,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/23/2024","dateComplaintFiled":"10/02/2024","vin":"3GTU9DELXMG","components":"ENGINE","summary":"Per the dealership: Lifter failure, crankshaft failure, metal shavings in the oil. Complete engine failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11614009,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/03/2024","dateComplaintFiled":"09/11/2024","vin":"3GTU9DEL4MG","components":"ENGINE","summary":"The contact's husband owns a 2021 GMC Sierra 1500. The contact stated that while her husband was driving 80 MPH, the vehicle stalled. Additionally, the \"Shift to Neutral and Restart\" message blinked. The vehicle was steered to the side of the road where the vehicle failed to restart. The vehicle was towed to an independent mechanic where the failure was not able to be replicated. The vehicle was then towed to the dealer where it was suspected that the crankshaft bearing had seized, putting pressure on the starter, causing a short. The contact was informed that the engine needed to be taken apart for a proper diagnostic test. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 81,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11612620,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/04/2024","dateComplaintFiled":"09/04/2024","vin":"1GTP9EEL3MZ","components":"POWER TRAIN","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds, there was a whining sound coming from the transmission. The vehicle was taken to the local dealer who diagnosed and determined that the transmission was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under the Extended Warranty for the failure. The failure mileage was 86,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11610894,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/31/2024","dateComplaintFiled":"08/26/2024","vin":"1GTR8CEK9MZ","components":"STRUCTURE","summary":"The contact owned a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle was shaking erratically, and the vehicle lost motive power. In addition, the contact stated that an unknown warning light was illuminated. The vehicle was towed to the dealer where it was diagnosed with a fractured front-end frame. The contact was informed that the front-end frame needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11608371,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/13/2024","dateComplaintFiled":"08/13/2024","vin":"3GTP9EEL8MG","components":"ENGINE","summary":"The engine locked up on the truck due to bad lifters. It has the 6.2L engine and after talking to several mechanic shops and research online this is a very common issue. GM is having to put lots of new engine in under warranty due to this issue. They need to have a recall to fix a known issue that is costing people thousands of dollars to replace the whole engine in the truck. We was driving down the hey today and with no working at all the truck died and and would not crank back over. We had the truck towed to a repair shop to find out that our truck had the same issue that lots of people are having and now it\u2019s gonna cost us several thousand dollars to have fixed when realistically GM should be paying to fix this problem.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11607325,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/06/2024","dateComplaintFiled":"08/08/2024","vin":"3GTU9BED6MG","components":"ENGINE","summary":"On the evening of 5/6/24, my husband was driving home in our 2021 GMC Sierra 1500 when the truck started to run hard, shaking, and the check engine light came on and was blinking. He pulled onto the side of the road immediately and more messages were coming across the dashboard. The truck was towed to a dealership that same night. Once the dealership assessed what was wrong, we were advised by the dealership who confirmed the lifters failed. The truck is currently still sitting at the dealership as we're waiting for the parts because we've been told multiple times that the parts are on backorder. I understand the truck is available for inspection as its been sitting on the lot since 5/6/24. This is the first time this has happened to the truck, zero prior issues. The truck has great service records and has always been properly maintained. We are currently still under the manufacturer warranty. To date, the dealership is still in possession of the truck for 90 days, and we still do not have any ETA on when the parts will arrive/truck will be fixed.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11605469,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/10/2024","dateComplaintFiled":"07/30/2024","vin":"3GTU9DEDXMG","components":"ELECTRICAL SYSTEM","summary":"Radio screen will go blank randomly after turning the truck off the I can here the radio but can not see any screen. After turning the radio of an exiting the truck radio still plays all of the sudden the radio will go off and restarting the truck radio is working again .At any random time the radio will go blank again","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11604500,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/17/2024","dateComplaintFiled":"07/25/2024","vin":"3GTU9FET2MG","components":"SERVICE BRAKES","summary":"While towing a trailer in tow/haul mode on the highway traveling around 60mph, their was a strong downshift clunking sound. About 10 miles later, it happened again, except this time the brakes logged up and truck skid for about a full second and then trailer began fishtailing slightly. Check engine like P2C7A came on. Seems like brakes or transmission momentarily locked up.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11602610,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/05/2024","dateComplaintFiled":"07/16/2024","vin":"1GTR9BED7MZ","components":"LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while the vehicle was parked and turned off, the electronic rear tailgate door erroneously unlatched and opened. The contact stated that the failure had occurred on several occasions. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 58,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11596820,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/09/2024","dateComplaintFiled":"06/26/2024","vin":"3GTU9FEL4MG","components":"UNKNOWN OR OTHER","summary":"The transmission/torque converter is causing (bucking, kicking, jerking, slipping, difficulty when taking off, shuddering during driving, fishbite, and chuggle). Its becoming a safety hazard now because its putting me and others at risk for an accident. The vehicle will hesitate to go in which if traffic may be rear ended by another vehicle. During weather/rain the vehicle will lose traction and the rear wheels will spin causing an accident. Problem has been reported to dealership multiple times and the only solution they can provide is keep driving the vehicle. Vehicle has no warning lights at all or any other symptoms of problems prior to when the components started to fail. The issue first happened around February 2024 and remains to be an issue to this present day. I've been the dealership more than 6 times with no solution/fix. I'm concerned for my safety now and need this issue addressed ASAP.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11595515,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/20/2024","dateComplaintFiled":"06/20/2024","vin":"3GTU9DED2MG","components":"STRUCTURE,LATCHES/LOCKS/LINKAGES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the inner tailgate door failed to open while pressing the release button. On several occasions while pressing the release button, the inner door would lower down. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 45,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11594924,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/14/2024","dateComplaintFiled":"06/17/2024","vin":"1GTR9CEK4MZ","components":"UNKNOWN OR OTHER,ENGINE","summary":"On [XXX] at approximately 3 pm I left my house and was traveling on [XXX] in Fort Mohave Arizona I was only traveling 7 miles. When I looked at the temperature in the cab was 121 degrees a few moments after the display system went black and never turned back on. I arrived at the store 4 minutes after the display shut off with no warning lights or any type of notification on my phone, I had rolled down the windows to get air in the cab to see if that would help cool down if needed. I was in the store 20 minutes. I returned to the truck turned it on and everything was normal, from there I drove back home nothing happened on my drive back the display was working. At 8 30pm I was traveling on [XXX] Driving towards a casino called Avi. I had the driver's side window halfway down when I smelled a faint plastic burn thinking it was coming from the outside because I had the window halfway down. That is when the cab of the GMC filled up with smoke that came in thru the air vents and flames started to show coming from the defrost vents and under the hood while I was driving. I had to stick my head out of the window to see where I could pull over without starting a huge brush fire. As I pulled over and the truck within seconds fully ignited into flames. Enough time to grab my belongings that I was able to save. My life was at risk by this vehicle igniting while I was driving. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11594261,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/09/2024","dateComplaintFiled":"06/13/2024","vin":"1GTP9EED1MZ","components":"ELECTRICAL SYSTEM","summary":"The inner tailgate continually releases the upper tailgate, which then opens when the vehicle is driven. When latched, the tailgate immediately opens again. This is reproducible. I gather the switch is shorted closed, leading to the release of the tailgate. This poses a risk to items in the bed of the truck leaving the vehicle unexpectedly while in motion. The truck has not been to the dealer yet, there has been no inspection of the vehicle by any authority. The vehicle displays a warning \u201cinner tailgate open.\u201d","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11592274,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/24/2024","dateComplaintFiled":"06/03/2024","vin":"3GTP9EED2MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as needed and made an abnormal sound. The contact assumed that the sound was coming from the transmission and the vehicle was taken to a dealer. The dealer diagnosed the vehicle and suggested that the failure might be a pulley or a rod bearing failure. The contact took the vehicle to another dealer who confirmed a rod bearing failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was approximately 46,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11591530,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/30/2024","dateComplaintFiled":"05/30/2024","vin":"1GTU9DED9MZ","components":"LANE DEPARTURE,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE","summary":"I am writing to complain about that General Motors has issued a retrofit program for 2022 model vehicles that did not come with safety features due to the microchip shortage. I purchased my vehicle new in 2021 and the vehicle did not have the option of having safety features at the time of purchase. I find not having the safety features in a large vehicle to be a safety concern for those that use the vehicle or around the vehicle. General Motors should add the 2021 model vehicles that also did not have the ability to have those features on them added as a part of their retrofit program.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11591188,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/25/2024","dateComplaintFiled":"05/29/2024","vin":"1GTU9DED9MZ","components":"VISIBILITY/WIPER","summary":"The wiper blade motor is defective. While driving during a storm the wiper blade motor stopped working on the delayed and low settings. This was a safety issue while driving. I took my vehicle to get looked at a GM Dealer to look at the vehicle. My vehicle is only 3 years old and should not have issues with the wiper blade motor.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11591379,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2024","dateComplaintFiled":"05/29/2024","vin":"1GTP8DEDXMZ","components":"STEERING","summary":"I just purchased a used 2021 GMC Sierra after having for a month the SERVICE POWER STEERING came on, I took it in for service and was told the part is on back order. Not to worried if the dealership and GM sold it to me that way. I am going to drive it and hope and pray that nothing bad happens. And if it does i will be getting a Lawyer.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11590543,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/24/2024","dateComplaintFiled":"05/24/2024","vin":"1GTU9DEL2MZ","components":"SUSPENSION","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 40 MPH, the front driver's side wheel separated and fell underneath the front end of the vehicle, causing the vehicle to veer towards oncoming traffic. The contact was able to pull to the side of the road, where the vehicle was awaiting to be towed. The contact related the failure to NHTSA Campaign Number: 21V718000 (Suspension); however, the VIN was not included. The dealer was notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 37,470.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11588692,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/30/2023","dateComplaintFiled":"05/14/2024","vin":"3GTU9CET1MG","components":"ENGINE","summary":"The coolant control valve is faulty and needs to be replaced. GMC and the dealership know about the issue (Bulletin No. PIP5791), but are not fixing it in a timely manner. This is a safety concern as the system will automatically reduce engine power, which is a major concern when towing and/or in mountainous terrain.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11588436,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/04/2024","dateComplaintFiled":"05/13/2024","vin":"1GTU9DET3MZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"The component that has failed is the engine coolant flow control valve AC Delco part number 55516369. Unfortunately the part is still installed on the vehicle. It has been taken to a dealer and this is a known issue but no recall has been issued. The check engine comes on sometimes but not always, sometimes the pickup has plenty of power to drive and sometime it will barely pull itself, all in the same trip without shutting the ignition off. The symptoms first started in December of 2023, but were sporadic, now it is nearly everytime the pickup is started. It is extremely dangerous to drive this vehicle when it has a problem. You cannot tell if it will accelerate normally or is you will push the pedal and it does nothing. The part to repair the problem is on backorder and no release date is yet available. We have been waiting for 3 months and still no word on when this will be repaired.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11588287,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2024","dateComplaintFiled":"05/12/2024","vin":"3GTU9DET5MG","components":"ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"My truck had smoke rolling out at work when I noticed it. Tried to put it out it Burnt my hands ! destroyed the inside I had it towed and insurance investigator said it was do to a brake controller for the trailer. And I took it to get estimate and the service dept said it was do To brake controller my truck was totaled my wallet toast my coat was toast my I phone my deposit my truck i drove daily to work out of and personal. General Motors would not help I called the. First. Then I was frustrated called my insurance they started a claim and low balled me now I lost 2 months of work bills stacked and low ball price on what the offer was) and haven\u2019t gotten one yet. Called gm back they said I had an active claim they woundenr help it\u2019s there defect I lost my job my mind etc on this. Two investigators state the same thing even there service dept. A gm service dept said the same thing. No warning indicators at al I will never buy another truck. The safety issue is people driving around not knowing. The 2500 and 3500 have them. Looked it up the plant that made my truck left the parts for manufacturing outdoors they got wet. It\u2019s on the internet people r gionbg to get hurt. Lucky I was outside when my was on fire. Please help on the matter. Thank u","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11585689,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/14/2022","dateComplaintFiled":"04/28/2024","vin":"3GTU9CED1MG","components":"ELECTRICAL SYSTEM","summary":"Tail gate failing from water intrusion. Wont stay up while driving. Already a recall for it in Canada but nothing in the USA where i see others have the same problem","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11580979,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2024","dateComplaintFiled":"04/03/2024","vin":"1GTP9EEL9MZ","components":"STRUCTURE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that there was water leaking through the rear sliding window. The dealer was notified of the failure and advised the contact that a fee would be charged for the repair. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 51,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11580844,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/25/2023","dateComplaintFiled":"04/03/2024","vin":"3GTU9FET9MG","components":"ELECTRICAL SYSTEM,STRUCTURE","summary":"Tailgate drops without warning, lower button on tailgate doesn't work.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11579253,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/23/2024","dateComplaintFiled":"03/25/2024","vin":"1GTU9CED2MZ","components":"STRUCTURE","summary":"I have a 2021 GMC Sierra 1500 with a power 6-point tailgate. The inner tailgate has been spontaneously opening for some reason. It seems the electric lock mechanism trips. This could case the contents of my truck bed to fall out. This issue is a known issue for GMC Sierras and a recall has been issued for the 2500's and 3500's but for some reason not the 1500's even though the tailgate is the exact same. I have an appointment to have the issue serviced at dealership, but since there is no current recall they will not cover the expense.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11578882,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/19/2024","dateComplaintFiled":"03/22/2024","vin":"1GTU9FET3MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at approximately 75 MPH and depressing the accelerator pedal, the vehicle failed to accelerate as intended. The check engine warning light was illuminated. The contact stated that the vehicle would slow down as if it was losing motive power. The vehicle was driven to a local dealer where it was diagnosed that the coolant control valve needed to be replaced. The vehicle was not repaired due to parts not being available. The manufacturer was notified of the failure. The failure mileage was approximately 32,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11577587,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2024","dateComplaintFiled":"03/15/2024","vin":"1GTR9BED5MZ","components":"STRUCTURE","summary":"GMC1500 Sierra pick up truck. Rear tailgate dropped today, 3.15.2024. Weather was rainy, tailgate was up at the start of the trip. Contacted GM Corp and was told this model 1500 was not part of the recall??","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11576218,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/07/2024","dateComplaintFiled":"03/08/2024","vin":"3GTU9CET7MG","components":"STEERING","summary":"Alignment Cam Guide Pins sheared off while driving on highway. Alignment went all over the place and car was drifting side to side. Also, steering wheel spun a quarter turn while car was not turning but still driving on highway. Almost caused me to crash. GMC does not want to acknowledge the issue or allow me to file a warranty claim. Car could not be driven to GM dealership safely and had to be repaired at closest shop","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11575089,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2022","dateComplaintFiled":"03/02/2024","vin":"1GTU9FED9MZ","components":"ELECTRICAL SYSTEM","summary":"It started year and a half ago involving my tailgate. The buttons to operate by upper and lower tailgate failed to operate on the rear of the truck, but cab button and remote button would open the full tailgate. Returned truck to dealer and they replaced the rear control. It worked for approximate 4 or 5 months the the total tailgate button failed, half tailgate button worked no problem. About 6 mths ago I went to drive to work and hit a bump felt like something bounced but really didn't think of tailgate being open. Drove on interstate for 7 miles at speed of 70 to 75 mph. I had my structural firefighting equip in the bed. Stopped at a drive thru for coffee then drove 5 miles to other side of town to my workplace put truck in reverse and my camera showed the ground, my tailgate was open. Thank goodness nothing fell out of the bed. 2-3 days later left for work, hit bump and felt the rattle in the rear again, stopped and tailgate down, closed tailgate and it opened again immediate after closing. This has occurred numerous times, now the half gate now unmatched along with entire tailgate and opens hitting hitch, scratched paint off. Thought it was me hitting keys in my pocket but continued to occur with key in cab. My mileage warranty passed so I was waiting to get some extra cash to fix the tailgate latches. Have not seen any recalls for GMC sierra 1500 denali, thought I would file a \"complaint\".","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11575091,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/02/2024","dateComplaintFiled":"03/02/2024","vin":"1GTU9FED9MZ","components":"ELECTRICAL SYSTEM","summary":"While driving down the road at random times of the day, random days, random drive periods, random locations, the DIC and touch screen along with radio will shutdown and restart, like rebooting the system or just starting the truck. I loose the mph, gauges, navigation, everything on the dash and touch screen the it will come back on like nothing happened. I have contacted 2 dealers and they say I need to download updates but when I go to update it is not required or needed.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11574295,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/15/2023","dateComplaintFiled":"02/27/2024","vin":"3GTU9DET4MG","components":"ENGINE","summary":"I purchased this vehicle used with approx 16k miles on it. Not long after getting it - as I was driving it started dinging and then would shut off. Sometimes I\u2019m in the fast lane going 75Mph and it\u2019ll just shut off. The dealership can\u2019t get it to repeat itself. They said they\u2019ve heard of it happening before but it throws different codes. There\u2019s no rhyme or reason to causing it to shut off, but here lately I don\u2019t even get the warning bell. It just dies on me. As soon as i shift it to neutral and press start it\u2019ll restart instantly. But it\u2019s scary nonetheless, and causes me to drop speed instantly and poses a safety risk especially when I have semi\u2019s or other vehicles close behind.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11565788,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2024","dateComplaintFiled":"01/16/2024","vin":"1GTP9CEK2MZ","components":"UNKNOWN OR OTHER","summary":"The Flex Tailgate has on multiple occasions has malfunctioned in cold temperatures. I have had instances where I can get it open when I have vital supplies in the bed of my truck because of the Tonneau Cover being on (I have a hard cover made for this truck) and the tailgate malfunctioning. I have also had an instance where my tailgate opened (after clicking shut) while driving without the notification coming up on my dash. I could've been held liable if my equipment fell out and caused an accident. Moral of the story this truck as a lot of issues when temps are below freezing even after being warmed up for 15 minutes or longer. I wouldn't recommend this truck based on the function of the Flex Tailgate. I would prefer a classic a handle and less tech now that I have seen it fail so many times.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11563631,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/04/2024","dateComplaintFiled":"01/04/2024","vin":"3GTU9DEDXMG","components":"SERVICE BRAKES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the brakes seized, and the service brakes warning light illuminated. Additionally, the contact stated that the vehicle jerked forward. The vehicle was driven to the residence and parked. The contact stated that the vehicle was turned off; however, the service brakes warning light remained illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 34,500.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11558217,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/28/2023","dateComplaintFiled":"12/03/2023","vin":"1GTU9DED2MZ","components":"ELECTRICAL SYSTEM","summary":"My 2021 GMC 1/2 Serria SLT 4x4 Crew Cab short bed, V-8 Gas engine with Automatic Transmission. I bought this pickup used with apprx. 41k miles on it. I had it about 2 months when I went out to start it and the battery was completely discharged, it would not even click or any lights come on. I hooked it up to a battery charger and got it started, took it to a shop and had the battery and alternator check which both were ok. Drove back home and went out the next morning and the battery was completely drained again, got it started and went an put in a new battery. 16 days later it did the same thing this time it smelled like wires burning when I opened the hood. Called the dealer I bought it from and they put it on a diagnostic machine for over 3 hours could not find anything. Then next morning the battery was again completely drained. Got it started and took it to another shop to get it checked out and after almost 3 hours there they found nothing. Came back home an it sat for just over 40 hours and again the battery was completely drained. I could smell what I think is plastic or rubber when I opened the hood again. My main concern is that this may be a fire hazard and could not only burn up my pick up but my house as well. The check engine light has came on but goes off so I am at a complete loss on this and seems as if GM is not concerned either. I have tried contacting GM but so far nothing other than a note from GM Canada that I need to contact the GM USA, and again that is the only thing I have gotten from anyone. Perhaps this is just a odd thing, I don't know but I do know it is not a safe thing.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11557188,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/23/2023","dateComplaintFiled":"11/28/2023","vin":"3GTU9CET5MG","components":"WHEELS,UNKNOWN OR OTHER","summary":"5 days after purchasing and While driving down the interstate at 80 mph, there was a loud clunk at the same time the back wheels locked up for a split second, long enough to burn the tires and throw everyone in the vehicle forward then the vehicle continued on. It happened three more times, we trailered it and brought it to the dealer. They said nothing is wrong with it. However, I was able to locate the previous owners who stated they'd been bringing it to several dealerships to have it taken care of for the past six months and every dealer said that nothing is wrong with it. But the same thing happened to them for six months. One mechanic in Idaho even replaced the motor trying to fix it and it still continued. The dealer I purchased from never mentioned it having a new motor, and I pulled the Carfax report and it shows several times it was in the shop including the motor replacement, but the shop visits aren't detailed it just says maintenance. Several mechanics we've spoken with say it's in the transmission, drivetrain. But the dealer refuses to do anything unless it'll replicate when they test drive it. But they don't test drive it on the highway or for a long enough time. Multiple owners now in multiple states the same problem and no one will help. This could be a catastrophic incident if the roads had been a little wet or someone was close enough behind us when it happened it would have been a serious car accident, if not worse. I am not sure you can help but Im reaching out to everything that I can find.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11552483,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/29/2023","dateComplaintFiled":"10/29/2023","vin":"3GTP8DED9MG","components":"STEERING,SERVICE BRAKES,ENGINE","summary":"\"Service parking brake\" \"steering assist is reduced drive with care\" comments showed up on screen\u2026check engine light on, truck shaking/ vibrating completely as if wanting to turn off this all happened while driving on the road and randomly happened\u2026please help..very Concerned","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11545524,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/12/2023","dateComplaintFiled":"09/19/2023","vin":"1GTP9EED8MZ","components":"ENGINE","summary":"Lifters camshaft malfunction. Known issue with 2021 GMC Sierra 20,000 miles","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11545110,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/29/2021","dateComplaintFiled":"09/18/2023","vin":"3GTU9EET6MG","components":"ELECTRICAL SYSTEM","summary":"Tailgate opens when driving and when parked. I thought something must of hit the button on the dash the first time it happened but now it is constantly doing it on its own. It has damaged the hitch.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11540751,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/25/2023","dateComplaintFiled":"08/25/2023","vin":"3GTP9GEK8MG","components":"SERVICE BRAKES","summary":"WHEN DRIVING HOME AFTER PICKING UP MY 2.5-YEAR-OLD AND 6-MONTH-OLD THE BREAKS FELT VERY ODD AND NOT RIGHT. WHEN I APPLIED THEM, IT FELT ROUGH TO APPLY AND THEN HEARD A NASTY SOUND COMING FROM THE REAR OFF TRUCK. I TOOK MY TRUCK IMMEDIATELY TOO THE DEALER AND JUST GOT THE PHONE CALL BACK THAT THE MASTER CYCLINDER FOR MY BRAKE SYSTEM NEEDS TO BE REPLACED. THIS VEHICLE HAS 22,500 MILES ON IT AND IT ALREADY NEEDS SOMETHING FIXED LIKE THIS IS PRETTY SCARY SINCE MY FRIEND JUST HAD IT HAPPEN TO THEM AND THEY GOT IN A MAJOR CAR ACCIDENT. THANK GOD I DIDNT HAVE TO PUT MY FAMILY THROUGH THAT. HAVING A BREAK FAILURE IS SOMETHING NOONE WANTS AND NOT WHEN THE VEHICLE IS PRETTY MUCH BRAND NEW STILL. THE DEALER HAS CONFIRMED THAT THIS IS A VERY RARE CODE IN TERMS THEY USED TO BE HAPPENING. THERE WAS NO WARNING LIGHT OR ANYTHING IT JUST HAPPENED THEN AS I WAS TAKING IT UP TO THE DEALER, I GOT THE SERVICE BRAKE SYSTEM ALERT ON MY DASH.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11537689,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/11/2023","dateComplaintFiled":"08/10/2023","vin":"1GTP9EEL5MZ","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"After having simple oil and filter, and engine and cabin filter replaced at Alpine Buick GMC in Colorado Springs, CO, I received my vehicle back and noticed a complete difference in performance. It hesitates when accelerating, stays low in every gear, and bounces, and I mean bounces hard, when shifting gears, especially slowing down. When slowing down, as it shifts to the next lower gear, it almost pushes the truck forward against me pushing the breaks. Then, when feathering to accelerate slowly, it almost bounces back up to speed, hesitating until I let off the accelerator pedal a little, and it immediately shifts to about 1000 rpm in gear. I have to push really hard for it to go up a gear, and when it does, it has lost all power. My vehicle doesn\u2019t run right anymore after my service appt. I have brought it to my hometown dealership and they say it runs fine and nothings wrong. But there is something wrong with it.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11536829,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/01/2023","dateComplaintFiled":"08/07/2023","vin":"1GTR8BEK6MZ","components":"POWER TRAIN","summary":"Transmission shifting is at times confused causing the vehicle to jump forward shifting to first gear. It pushes your vehicle 2-5 miles an hr faster when slowing down. The transmission also does the opposite when letting off the accelerator, shifting fast to a lower gear slowing the vehicle down quickly in a jerking motion at times. I have an 8 speed transmission. GMC dealer is replacing my torque converter, stating this may fix the issue, but it is a safety concern.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11527661,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/05/2023","dateComplaintFiled":"06/19/2023","vin":"3GTU9CET2MG","components":"ELECTRICAL SYSTEM","summary":"My son got into the car to drive it and saw a black screen with a message that states \u201cupdate failed, see dealer\u201d and had multiple languages. Since that date, he has no GPS or backup cam, which he relies on as a new driver. Nothing at all in the info system works.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11526436,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/24/2023","dateComplaintFiled":"06/11/2023","vin":"3GTU9FET8MG","components":"UNKNOWN OR OTHER","summary":"I have HD surround vision cameras. I was parallel parking very slowly. The back end of my truck was in so I was watching the camera to see the front right of my truck and the back left of the other vehicle. I could see both vehicles including the road between them. There was space between the vehicles on the camera when I hit the other car. I called Sewell Buick Gmc and explained the camera might need calibrating. They sent a loaner car and picked mine up, When the driver arrived I explained the situation. It surprised his so I said get in my truck and put in reverse to activated the camera and watch me as I walk toward the right front tire. He saw mw as I approached, however, when I got right next to the tire I disappeared from she screen. GM said the vehicle was operating as designed. Operating as designed? They designed a SURROUND camera to show objects until they get next to the vehicle. Imagine if it was a toddler.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11521259,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/09/2023","dateComplaintFiled":"05/09/2023","vin":"3GTP9EED6MG","components":"STEERING","summary":"Steering wheel stopped working","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11520989,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/08/2023","dateComplaintFiled":"05/08/2023","vin":"3GTU9FEL7MG","components":"UNKNOWN OR OTHER","summary":"I have a GMC Sierra 2021 Denali. The vehicle currently has less than 16,000 mile and is at the dealership service department for lifter replacement. This is an extensive repair considering how new the vehicle with low miles. From extensive online research and collaborating with others, this is a common concern with multiple GMC vehicle that's been on GMC radar starting in 2017. GMC haven't yet issued a recall for these products and the consumers are footing the bills. Please put pressure on GMC to rectify their wrong.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11519962,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/06/2003","dateComplaintFiled":"05/02/2023","vin":"1GTU9DED1MZ","components":"ELECTRICAL SYSTEM","summary":"While towing a new 2023 Airstream trailer on Interstate route 95 in New Hampshire my GMC Sierra truck driver display flashes a \" check Trailer wiring\" error message. When this message appears all brake function to trailer is lost makeing driving unsafe. The connection sometimes can intermittently and continuously reconnect momentarily and brakes reengage for seconds until they disengage again with repeated \"check Trailer wiring\" error message . Sometimes the brakes just disengage end never reconnect until error codes is cleared by GMC dealership. It's extremely unsafe to pull off exit and have trailer brakes reengage because they jam with high gain because vehicle brakes need to be applied very hard to over compensate for \"NO\" trailer brakes. GMC dealership has identified certain error codes with their computer but NO suggested fix!","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11519081,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/24/2023","dateComplaintFiled":"04/26/2023","vin":"3GTU9CED5MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle was shaking with the check engine warning light illuminated. The independent mechanic was made aware of the failure; however, the vehicle was not diagnosed or repaired. The contact stated that the independent mechanic had previously replaced the lifters, but the failure recurred. The manufacturer was not made aware of the failure. The failure mileage was approximately 20,095.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11518476,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/22/2023","dateComplaintFiled":"04/22/2023","vin":"3GTU9DED5MG","components":"STEERING","summary":"My 2021 gmc Sierra displays (service power steering with care) the truck only has 13184 miles and barely moves.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11517704,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/18/2021","dateComplaintFiled":"04/18/2023","vin":"1GTP8FED5MZ","components":"TIRES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the tire pressure warning light illuminated and that the TPMS sensor was not indicating the pressure for each tire. The vehicle was taken to the dealer and the dealer stated that no failure was found; however, the TPMS was reset, but the failure reoccurred. The vehicle was taken back to the dealer and the TPMS was reprogramed, but the failure persisted. The manufacturer was not contacted. The failure mileage was 5,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11517110,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/31/2023","dateComplaintFiled":"04/14/2023","vin":"1GTU9CED7MZ","components":"STEERING,SERVICE BRAKES,ENGINE","summary":"While driving home from work around 6 am, my car had multiple warning lights and warning messages come up all of a sudden. Immediately after that I lost my power brakes and steering and was not able to control my car at 40 mph. I was lucky the light I passed was green and there was no other traffic. I was able to bring my truck to a stop after more than a quarter mile by putting all my weight on the brake pedal. The truck was towed to the dealer and has been there ever since.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11516713,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/12/2023","dateComplaintFiled":"04/12/2023","vin":"3GTP8DED4MG","components":"STEERING","summary":"I parked my car for about an hour after driving for months with absolutely no issues or warnings. When I started my car and went to pull off the steering wheel locked up and I couldn\u2019t turn it. A message appeared on the screen saying: Service power steering drive with care, and an esc message. A light also appeared. I turned the car off and let it sit for an hour. When I started it again everything worked fine. My dealership won't do anything because the warning codes went away, and the vehicle is not included in any current recalls. When looking up this problem it appears there are multiple recalls for the exact same issue on other 2021 Yukon and Tahoe models but not the Sierra. Though I see many forums and threads complaining about the same problem on the Sierra's. Since it is the same vehicle and systems as the Yukon, shouldn't the same recall apply?","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11515885,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/30/2023","dateComplaintFiled":"04/06/2023","vin":"1GTP9EEL3MZ","components":"ENGINE","summary":"DRIVING DOWN THE HIGHWAY THE ENGINE STARTED SKIPPING AND STARTED BLOWING OUT BLACK SMOKE, AND QUIT RUNNING IN THE MIDDLE OF THE HIGHWAY. FOUND OUT THE HAD A FACTORY LIFTER DEFECT ON MY MODEL AND A SERVICE UPDATE WAS SUPPOSED TO BE DONE ON THE TRUCK CHANGING OUT THE LIFTERS HOWEVER EVEN THOUGH I HAVE GONE TO DEALERSHIP FOR ALL THE MAINTENANCE THE SERVICE HAD NEVER BEEN DONE OR TOLD TO ME. THIS COULD HAVE BEEN VERY DANGEROUS JUST ENGINE FAILURE THE SERVICE BY GMC N212353840","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11515485,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/04/2023","dateComplaintFiled":"04/04/2023","vin":"1GTP9EEL8MZ","components":"ENGINE","summary":"I was operating my vehicle in northern Minnesota with a temperature well below freezing. Vehicle warning light came on that said \"turn off vehicle\" which I did. When I went to start it again it would not turn over. It appeared that a large amount of oil had expelled from the vehicle. It was very dangerous as I was in a very remote area with very poor cell service and extremely cold temperatures. I couldn't even run the vehicle to stay warm. The vehicle was towed to the nearest GMC dealership where they examined the vehicle and stated that the seal of the oil filter had blown off. They further stated that the oil filter which was installed by Valvoline was the wrong size. Valvoline tested the Champion oil filter and came back with findings that the filter was the correct size and noted no damage to the filter. Either there is an unknown problem with the GM engine or the Champion oil filter. Each corporation continues to point fingers at each others product.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11511128,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/10/2023","dateComplaintFiled":"03/10/2023","vin":"3GTP9AEHXMG","components":"SERVICE BRAKES","summary":"I bought a loaner 2021 GM Sierra 1500 in Aug. 2021 from Starling Buick GMC, Venice, FL with 1600 miles on it. I used the Sierra to move items from my houses in my trailer from both FL to PA and PA to FL. On each trip The trailer brake controller would go out while driving. The first time it occurred was on a trip from FL to PA, during this trip it happened at least four times. Upon arrival in PA I took it to Kelly Buick GMC in Allentown, PA. They looked over the vehicle, saw there were codes in history indicating an issue with the trailer brake system but could not replicate it or pinpoint what part of the system was faulty. The dealer told me that GM will not fix it if it is in history only if it is currently giving a code. On the return trip back to FL from PA, same thing several times it occurred, took it back to the selling dealer Starling, and they gave me the same speech as Kelly , can't fix it without a current code. Next trip from FL to PA, same thing took it to Kelly again, same response. Back to FL from PA, same thing, Starling gave me the same response, they can't and won't do anything. I told Starling service rep I guess I need to die before you do anything, she was completely indifferent to my comment and backed GM without any regard for my safety. It is sporadic and inconsistent and obviously only occurs when there is a trailer attached. They said it was my trailer so I took it to a trailer mechanic, we tested it on its own and on another vehicle with no problem. The brake controller failed while hauling a trailer potentially allowing a serious if not deadly accident with improper braking capabilities. Even though two dealers in two different states acknowledge there is an issue they refuse to correct it because they can not replicate it. The brake controller lights would go out as you're driving indicating the brake controller is not connected to the trailer and providing a supplemental braking system. 2022 and 2023 have this issue.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11508746,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/06/2023","dateComplaintFiled":"02/23/2023","vin":"1GTU9EET1MZ","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"Less than 5 minutes after my husband and 2 children parked the car and came inside, a neighbor walking rang our doorbell to let us know there was something on fire in our driveway. We ran to the back to find his truck engulfed in flames coming from the engine. We quickly called 911 and exited the house/property. The truck continued to burn with 20-25 foot flames and very black smoke for about 40 minutes until the fire department was able to control the fire. The fire was hot enough that the entire engine was significantly burnt, the seats and steering wheel were gone, the glass shattered and melted, and the tires exploded and melted. Thankfully, everyone was out of harms way and safe through this incident. However, it has been extremely traumatic on my family and neighbors and has taken a lot of time and energy to try to deal with this. The car sat in our driveway for over 2 weeks with a very potent smell causing headaches until GM and our insurance finally investigated. There is damage to our siding, driveway, landscaping, basketball hoop, trampoline, and neighbors fence. The car was only 2 years old and scares me how quickly it went up in flames and how much worse this could have been either 3 minutes earlier or if it was parked in our garage.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11502347,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/18/2023","dateComplaintFiled":"01/18/2023","vin":"1GTU9EET6MZ","components":"AIR BAGS,SEAT BELTS","summary":"I get a \"Service Safety Restraint System\" warning sporadically when driving. No known cause and the vehicle has never been in an accident. This started happening after my last service at Capital Buick GMC in Smyrna, GA on January 6th, 2023.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11501848,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2023","dateComplaintFiled":"01/15/2023","vin":"3GTP9EEL0MG","components":"ENGINE","summary":"2021 GMC Sierra 1500 AT4 6.2L engine, Little over 39000 miles, Purchesed May 2021. This is the second time the vehicle has had this issue. The first time was aprox 15000 miles. I reported the issue to NHTSA-ODI on 6 Dec 2021 tracking # 11442943. I was driving down the interstate I heard a rattling coming from the engine (same as I had heard with the first issue). The check engine came on I ask On Star to do a digonsotic report (see attached report). The report indicated a Fuel Management System issue detected advised to reduce vehicle speed and pay load as possible. I was told by GM certified mechanics that this issue could cause the engine to lock up and come to a complete stop on the roadway. I fill that these vehicle are unsafe to operate under these conditions and may cause serious accidents. GM has known about these issues with these vehicles for several years and has failed to correct the problem.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11501309,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2021","dateComplaintFiled":"01/11/2023","vin":"3GTU9DED1MG","components":"ELECTRICAL SYSTEM","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds with the ONSTAR/GPS, turn-by-turn driving directions activated, there was an unknown notification flashing on the instrument panel and radio. The speedometer was obstructed and failed to work as needed. The screen sporadically went blank. While depressing the dismiss button on the steering wheel, the button failed to correct the failure. There were no warning lights illuminated. The vehicle was taken to the local dealer and the system was rebooted; however, the failure recurred. The vehicle was taken back to the local dealer and the contact was informed to turn off the vehicle, open the door, and then restart the vehicle to reboot the vehicle. The vehicle was taken to another local dealer, Bill Cramer Chevrolet Buick GMC (2251 W 23rd St, Panama City, FL 32405) but the vehicle was not diagnosed or repaired. The manufacturer was contacted but no additional assistance was provided. The failure mileage was approximately 10,450.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11499765,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/10/2021","dateComplaintFiled":"01/02/2023","vin":"1GTU9FET7MZ","components":"ELECTRICAL SYSTEM","summary":"My truck\u2019s battery is dead after sitting for a few days. There is a manufacturing deficit causing parasitic draw. This is a safety issue because it leaves us stranded after parking the vehicle for a few days. The General Motors dealership refuses to do it anything about it. They claim it\u2019s normal.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11499821,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/31/2022","dateComplaintFiled":"01/02/2023","vin":"3GTU9CET9MG","components":"EXTERIOR LIGHTING","summary":"During winter/snow driving snow accumulates on the headlights and causes a partial to total loss of visibility. This has happened multiple times during winter months. Cleaning the headlights requires exiting the vehicle in a potentially dangerous situation. This may occur after every few miles or less depending on the conditions.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11497706,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/09/2022","dateComplaintFiled":"12/16/2022","vin":"3GTU9FEL4MG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"15000 MILES LIFTER FAILURE IN TRAFFIC HIGHWAY AT SPEED 70 MPH LOST POWER ENGINE FAILED MULTILANE HIGHWAY RUSH HOUR TRAFFIC NO WARNING FAILURE","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11497657,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/20/2022","dateComplaintFiled":"12/15/2022","vin":"3GTU9DED3MG","components":"UNKNOWN OR OTHER","summary":"I have a 2021 GC Sierra 1500, The guidance lines in the display when in reverse go from non-existent to barely visible and are not usable especially in sunlight. The service man at Miller Chevrolet in Marianna Fla says GMC is aware of the problem, that it was caused by the last update download and will be fixed by another download to correct the problem. He also says the same issue is nationwide and all trucks have the issue which I find hard to believe. 1.If that were true it would be a simple matter of a few lines of code to correct the problem. 2. I have been chasing this problem since October and have now made four trips to the dealership. 3. I cannot believe all trucks have this issue and also I suspect the same backup system is in all GMC vehicles regardless of type. 4. I cannot believe GMC would allow such a problem to exist since the last update download which was months ago. 5. I contacted GMC Customer Care in October after the dealership told me they had no idea what was causing the issue. I have had a case number [XXX] since that time. I was told on the first call that if necessary a Tech would be sent to fix the problem. Today I called asking for a tech to be sent only to be told I had to take it to another dealership and try them before a Tech could be sent! I have two questions, can you help with this and does this qualify as a \"lemon law\" case? Any assistance would be greatly appreciated. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11497286,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/28/2022","dateComplaintFiled":"12/13/2022","vin":"3GTU9EET6MG","components":"SERVICE BRAKES","summary":"All 4 brake rotors are warped according to my local GMC dealership. They also told me all of the inside brake pads are worn twice as much as the outer pads, which in my opinion indicates a manufacturing and/or computer controller issue. Safety is an issue when the inside brake pad wears down to metal while the outers are still over 75% of new thickness. GMC dealer told me they're seeing this on countless Sierra trucks made in the past few years but there is no recall and GMC will not cover it under warranty. First symptom was slight pulsing while braking downhill. 2-3 weeks later my brake pad wear indicator read 82% front, 88% rear. The following day it gave me an error message saying \"service brake monitor\" so I took it to my GMC dealer which is when they told me my brake pads and rotors all need to be replaced but the truck only had 22800 miles on it at that time. They said it could still be driven and pass inspection. Since then I have contacted GMC about them covering it and I have not made any progress. GMC has had numerous brake issues resulting in recalls in the past 3-6 years but unfortunately this particular issue has not yet reached recall status. I hope this gets resolved before I am forced to pay for brake replacements out of pocket, which nobody should have to do on a vehicle with so little miles on it. The work order invoice I uploaded indicates \"\"pads at wear limit, both front and rear\" but it does not specify what the technician and service advisor told me regarding only the inside pads are worn. However I do have a recording of the service advisor telling me that if needed. You'll also notice that I uploaded a copy of the state inspection done by them that same day which indicates my brake system passed the requirements. Please help.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11494861,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/10/2022","dateComplaintFiled":"11/25/2022","vin":"3GTU9CET0MG","components":"FUEL/PROPULSION SYSTEM,FUEL SYSTEM, DIESEL","summary":"Within 100 miles after purchasing this truck from GMC (used with 74K miles)I got messages both on my phone and later through inspection at GMC service center that the DEF system had a problem. The check engine light came on then off as well.I was getting messages saying I only had so many miles before the DEF system needed more fluid even though the tank was full or near full. The dealer here in Tucson indicated there was a bulletin on this problem and ordered parts for the repair. I was informed it was not a recall and I would have to pay over $800.00 for this repair. To date the dealer has had my truck for 2 weeks. Additionally, another message said insufficient coolant flow so they are installing a new coolant pump to be paid for by an after market warranty which I purchased at the time I bought the truck. This repair is over $1000.00","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11493110,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/07/2022","dateComplaintFiled":"11/10/2022","vin":"1GTU9FEL4MZ","components":"SERVICE BRAKES","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the grandson was driving in stop-and-go traffic, the braking system suddenly malfunctioned causing the vehicle to crash into the rear of a second vehicle. The grandson was driving approximately 10 MPH when suddenly while pressing the brake pedal to stop the message \"brake failure\" displayed before the vehicle crashed into the rear of the second vehicle. During the crash, no injuries were reported and a police report was taken at the scene. The vehicle was taken to the local dealer who replaced the master cylinder and brake booster and the failure was remedied. The failure mileage was 21,539","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11491179,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2021","dateComplaintFiled":"10/27/2022","vin":"3GTU9EET3MG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while operating the vehicle, the dashboard gauges, instrument cluster, and infotainment center malfunctioned and became inoperable. Additionally, while starting the vehicle, there was a loud cranking sound coming from the engine compartment and the vehicle would not immediately start. The vehicle was taken to the local dealer, but the cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 100.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11489962,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2021","dateComplaintFiled":"10/19/2022","vin":"3GTU9CET7MG","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle went into Limp Mode with the check engine, DEF tank, and emission warning lights illuminated. The vehicle was taken to the dealer, and the dealer replaced several unknown sensors; however, the failure recurred. The dealer determined that the computer needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 35,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11487673,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/15/2021","dateComplaintFiled":"10/03/2022","vin":"3GTU9DET0MG","components":"STRUCTURE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that after parking the vehicle, it was discovered that the electronic multifunction tailgate had erroneously opened. Also, during the failure the tailgate struck a scooter lift that was attached to the vehicle. Both the tailgate and the scooter lift were damaged. The contact indicated that the failure had occurred on multiple occasions. The vehicle was taken to the local dealer who was unable to determine the cause of the failure and the vehicle was not repaired. The manufacturer was also notified of the failure. The contact was concerned that if a heavy load was being carried at the time of the failure it might have fallen onto a busy freeway. The failure mileage was 6,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11486201,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/30/2021","dateComplaintFiled":"09/24/2022","vin":"1GTU9CET0MZ","components":"UNKNOWN OR OTHER,VISIBILITY/WIPER","summary":"The driver-side mirror on my 2021 GMC sierra is unusable at freeway speed. When traveling at freeway speed the glass moves due to wind and causes the reflection in the mirror to be blurry. The reflection from the mirror is blurry to the point that I'm unable to identify objects in the mirror and it is difficult to gauge size and closing speed of any objects in the mirror. The issue has been with the vehicle since I purchased it new in June of 2021. The issue has been reproduced by two different dealership service centers and the entire driver-side mirror assembly has be replaced twice with the issue persisting. I have videos showing the issue but they are too large of files to upload on this form.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11485362,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/19/2022","dateComplaintFiled":"09/19/2022","vin":"3GTP8CED6MG","components":"STEERING,SERVICE BRAKES","summary":"I start my car and I went to pull off and the steering wheel locked up and I couldn\u2019t turn it and it was just stuck going to sit power steering EC something. And then came home parked the car few days later try driving it and then the ABS brake light came on warning me not to go over 65 mph and my brakes pad feel really loose now.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11481375,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/10/2022","dateComplaintFiled":"08/26/2022","vin":"3GTU9DED5MG","components":"BACK OVER PREVENTION","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that he had received an unknown Manufacturer recall notification related to the Back Over Prevention camera. The vehicle was taken to the dealer and the recall repair was performed. Upon return of the vehicle, the grid pattern on the camera was very dim and was not visible to the contact while in use. The vehicle was taken back to the dealer where he was informed that the recall was performed correctly and that no further repair could be performed. The manufacturer was notified of the failure and a case was filed. The contact was then referred to Bob Clapper Automotive (3601 E Milwaukee St, Janesville, WI 535460) for further assistance. The vehicle was taken to the dealer; however, the dealer offered no further assistance. The dealer provided the same information as the original dealer. The vehicle was not repaired. The failure mileage was 7,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11479962,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2022","dateComplaintFiled":"08/18/2022","vin":"1GTU9EET2MZ","components":"STEERING,SUSPENSION,LANE DEPARTURE","summary":"I took my truck to the dealership because of my issues and they said they had many trucks going in with the same issue but there was no fix to it. The issues Popping Noise Heard On Hard Turns and/or Going Over Speed Bumps, Creaking Noise While Turning Wheel Left and/or Right, Clicking Noise Heard On Slow Sharp Turns.Also when you go over a bump the truck makes a spring loud noise to the point that the whole truck bounces. shifter is also very hard when you try to change gears.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11477516,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/31/2022","dateComplaintFiled":"08/04/2022","vin":"1GTP8CET3MZ","components":"TIRES","summary":"The contact owns a 2021 GMC Sierra 1500 equipped with General Tires, Tire Line: Grabber HTS60, Tire Size: 275/60 R20, DOT Number: (NA). The contact stated while driving 15 MPH in a parking lot, the rear passenger\u2019s side sustained a blowout. The contact stated that the low tire pressure warning light was illuminated. The contact was able to park on the side of the road and replaced the rear passenger\u2019s side tire with the spare. The contact took the vehicle to the local dealer to be serviced. The vehicle was not yet repaired. The tire manufacturer had been informed of the failure. The failure mileage was approximately 18,700.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"},{"type":"Tire","productYear":"9999","productMake":"GENERAL TIRE","productModel":"GRABBER HTS60","size":"275/60 R 20 115S","manufacturer":"Continental Tire the Americas, LLC"}]},{"odiNumber":11471842,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/27/2022","dateComplaintFiled":"06/30/2022","vin":"1GTR9CED0MZ","components":"ELECTRICAL SYSTEM","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while attempting to start the vehicle, the vehicle failed to operate as needed. The service parking brake, check engine, and other unknown warning lights were illuminated. The vehicle was towed to the local dealer to be diagnosed. The contact was informed that the failure was due to damaged electrical wiring caused by rodents. The contact was informed by the dealer that the wiring insulation was made from soy-based materials. The vehicle was repaired three times due to the failure. The manufacturer was notified of the failure. The approximate failure mileage was 23,300.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11468057,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/28/2022","dateComplaintFiled":"06/07/2022","vin":"1GTU9DEDXMZ","components":"ENGINE","summary":"Engine lifters failure, caused ESC light to come on and check engine light and other dash lights. Lack of power from engine causing dangerous driving in traffic.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11467248,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/30/2022","dateComplaintFiled":"06/03/2022","vin":"3GTU9FEL9MG","components":"FORWARD COLLISION AVOIDANCE","summary":"When using adaptive cruise the brakes have engaged aggressively without cause. This has happened several times prior to my discontinuing the use of this option. I have not had it in for service yet (we just returned from vacation).","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11467195,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2022","dateComplaintFiled":"06/02/2022","vin":"3GTU9DED0MG","components":"POWER TRAIN,ENGINE","summary":"1 June 2022, while driving, started hearing a clicking noise from front end, under hood. Took to local GM dealer, Mechanic drove with me, and he heard the noise, said he would order a part and safe to drive. So, I went home. 2 June 2022 started same vehicle, a very loud banging, clicking, shuttering noise from under hood, I took back to same dealer, Dealer said collapsed valve lifter. GM service notice says for dealer to fix under warranty. Apparently, a known problem with MANY 2021 GMC 5.3 L engines. PLEASE MAKE GM RECALL THIS ISSUE FOR REPAIRDS","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11466718,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/13/2022","dateComplaintFiled":"05/31/2022","vin":"3GTU9DED8MG","components":"SERVICE BRAKES,ELECTRICAL SYSTEM","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that when pulling a trailer with electric brakes with their vehicle, a warning light stating to check the trailer would illuminate on their instrument panel. The warning light would also state that the electric brakes had disconnected and then reconnected shortly after. The failure would occur on a consistent basis. The main control computer system in the center where the radio is located would flash the message that the trailer brake gain not been recalled. The contact contacted the dealer who confirmed that the computer system was known to have an issue due to the interference between the electric brakes and the LAD lights on the vehicle, however, there was no recall. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 21,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11461762,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/01/2021","dateComplaintFiled":"04/22/2022","vin":"1GTU9EET7MZ","components":"ELECTRICAL SYSTEM","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while using the GPS, the digital speedometer failed to operate as needed. The contact notified the dealer of the failure and the system was rebooted; however, the failure persisted. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 1,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11461412,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/19/2022","dateComplaintFiled":"04/19/2022","vin":"3GTP8CED0MG","components":"STEERING","summary":"As I was driving out of the parking lot my power steering suddenly was lost. A message appeared on the screen saying: Service Power Steering Drive with care and an esc message. A light also appeared. I was not able to steer at all and had to turn the truck off. I tried multiple times. After 5 minutes the message cleared as did the light. A day later (today- 4/19)the same thing happened in the parking lot. THIS IS VERY DANGEROUS. I have an appointment with the dealer. When looking up this problem it appears there are multiple recalls on other 2021 models but not the Sierra though I see many complaints about the same problem on the Sierra's. This is not safe and needs to be looked into further.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11460325,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/28/2022","dateComplaintFiled":"04/10/2022","vin":"1Gtr8bed7mz","components":"UNKNOWN OR OTHER,ENGINE","summary":"My truck shakes/shutters at random times. while steadily driving at constant speed and/ or shakes/shutters even more when I try to accelerate.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11456062,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/21/2022","dateComplaintFiled":"03/10/2022","vin":"1GTU9DED7MZ","components":"STEERING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while the vehicle was standstill, the steering wheel seized. The contact stated no warning light was illuminated. The contact called the local dealer and made them aware of the failure. The contact was instructed by the dealer, to remove the ground cable from the battery and reinstall. The contact stated he was able to reboot and the steering wheel was able to move properly. The manufacturer had been informed of the failure. The failure mileage was approximately 15,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11454129,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/18/2022","dateComplaintFiled":"02/25/2022","vin":"3gtu9det2mg","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that the check engine warning light was illuminated and the vehicle failed to accelerate above 60 MPH. The contact took the vehicle to the dealer who diagnosed that the DEF tank had failed and needed to be replaced. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 4,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11453754,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/26/2022","dateComplaintFiled":"02/24/2022","vin":"1GTU9CED8MZ","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that after starting the vehicle, the check engine light remained illuminated and the vehicle would not properly accelerate while depressing the accelerator pedal. The vehicle was taken to the local dealer who diagnosed that the engine valve lifter was faulty and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 11,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11453597,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/12/2021","dateComplaintFiled":"02/23/2022","vin":"1GTP9EEL9MZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"While driving, when approaching speed of 40 mph, the engine begins to have dull shutter intermittently as though I am going over pot holes or rumble strips when I am not. Regardless of time or day or weather the truck has performed in this way. I have had it to the dealership twice for the issue. The first time they said they didn\u2019t feel anything and unable to duplicate the problem. The second time, the vehicle was with the dealer for several days trying to determine the other issue it was there for. I requested they again try to recreate the concern. The service assistance asked if I was willing to ride with the technician to see if I could point it out for him. In scheduled a time to do so, when I arrived, the technician was not there. I reside an hour away from the dealership. Making these round trips and getting no where with support or answers. When this happens, I become extremely anxious about the safety of the truck. Also- while 4 X4 is engaged, the truck has significant shutter when going up hill, as though the transmission is going to drop. The entire truck will violently shake.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11452246,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2022","dateComplaintFiled":"02/16/2022","vin":"1gtp9eel9mz","components":"ELECTRICAL SYSTEM","summary":"The console radio dash has gone completely black while both driving and while using it for the speaker/phone system. The incident resulted in the entire system restarting.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11450637,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/01/2022","dateComplaintFiled":"02/06/2022","vin":"3GTU9DED2MG","components":"ENGINE","summary":"Vehicle has less than 10,000 miles. Started making a loud noise and shuddering in the engine while at speed on the highway. Made it to dealer but was concerned we were going to break down before making it safely there. Service manager strongly suspects engine lifters (he drove it briefly with me and says this is a known issue with this truck & they currently have 3 other trucks in the shop with this same problem. He said parts are a 3-4 month wait and vehicle is not driveable, will break down, but couldn\u2019t say when - could be 10 minutes, an hour, or a day. This happened to me on 2/1/22, while out of town on vacation. An hour on the phone with GM and was passed around to 3 different individuals. GM would not provide a loaner vehicle - leaving me stranded out of state. I had to get a rental vehicle on my own, GM claims they will reimburse me for a portion of this after 6-8 weeks. GM will not tow the vehicle home to Virginia (vehicle is in NC). I had to turn in rental car once I returned home because I can\u2019t afford to keep paying for this on my own and it\u2019s not a truck, which I depend on. Dealer is unable to fully diagnosis and document until end of week 2/7 or early week 2/14 as they are very busy. Unacceptable on ALL levels.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11449446,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/04/2021","dateComplaintFiled":"01/30/2022","vin":"3GTU9DEDXMG","components":"POWER TRAIN,ENGINE","summary":"8 lifters in my vehicle needed to be replaced. While driving my vehicle (12/4/21), after the auto stop feature was activated my truck experienced a lack of power and hesitation. I then turned the truck off and upon starting it was making a knocking noise. I immediately checked the oil as I wanted to make sure there was oil in the engine. I had warning lights on the dashboard and drove it about 3 miles to the dealer to be repaired. While driving it to the dealer, it did not sound right and shook. I also experienced a lack of power and was concerned for the vehicle to stall out while in traffic. The dealership informed me this is an issue with the 2021 GMC Sierra with a 5.3L V8 engine. I had seen online that GMC issued a service bulletin to have the lifters replaced in the 2021 GMC Sierra that were on the lot before they were sold (early December 2021). If this is a known issue why weren't the lifters replaced in vehicles on the road before the ones sitting on the lot. 8 lifters were replaced by the dealership but there was a shortage of parts due to the nationwide problem. There were no warning lamps, messages prior to the failure. The only symptoms I had was shaking and lack of power as indicated above after the autostop feature was activated. I then drove about 2 miles and went into a store before coming out and having the loud knocking on startup followed by warning lights and messages.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11447766,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/13/2021","dateComplaintFiled":"01/17/2022","vin":"3gtu9del0mg","components":"UNKNOWN OR OTHER","summary":"The only way to get the heater to work on your feet is to turn off defrost, turn on only feet, turn on AC and sync both sides. I live in North Idaho and when you do this your windshield fogs up and freezes. I have taken this to the dealership and was state \"Works as designed by GMC\". To me this is unacceptable. I drive 90 miles each way to the airport and have to decide what condition i can live with. Completely frozen feet and a clear window or the reverse.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11447523,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/15/2021","dateComplaintFiled":"01/14/2022","vin":"3GTU9DED2MG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Can turn vehicle off while in gear (drive specifically). When you let off the brake, the truck acts as if it is in neutral. Discovered in my driveway when accidentally forgot to shift into park when I pulled in and pushed the stop button. Truck turned off, which would only expect if in park (or neutral), let off brake, and it began quickly rolling backwards as if it was in neutral. Fortunately the brakes were working, but had any children been riding a bike on the sidewalk or walking by, my truck may have hit them. Had I been more distracted and not noticed initially, it could have rolled into the road and hit my neighbors truck. This behavior can be reproduced every single time, and I can easily supply video.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11447526,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2021","dateComplaintFiled":"01/14/2022","vin":"3GTU9DED2MG","components":"POWER TRAIN","summary":"When shifting into drive after reversing, truck will occasionally do a small thud and hesitate to move forward. This is from a stopped position after reversing, then braking, putting the truck into drive, then it happens when starting to move forward at very low speeds (I would say about 1-2mph). Vehicles recovers quickly, however it seems like a transmission mount or something may have issues. If another car were coming up quickly, or started going expecting you to start moving, the delay the thud and hesitation causes may be enough to cause a minor incident (assuming no high speed traffic coming up behind someone as they reversed out). This issue does NOT occur every time. I have owned the truck for 4 months, and it has happened only about 4-5 times in total.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11446706,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/07/2022","dateComplaintFiled":"01/08/2022","vin":"3GTU9EET8MG","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"Less than 300 miles on the vehicle and it has thrown an error code P2B60. Relating to the engine coolant flow control valve position sensor. I have taken it to my local GM service center and they cannot see me for weeks. As of this morning the check engine light has disappeared but my fuel economy has severely decreased. It seems suspicious and possibly dangerous that it showed a check engine light with a warning of reduction in engine power the night before and disappeared in the AM","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11446584,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/04/2022","dateComplaintFiled":"01/07/2022","vin":"1GTR9AEK2MZ","components":"STEERING,ELECTRICAL SYSTEM","summary":"Started vehicle up in public parking lot and it had service power steering and ESC messages. Vehicle could not turn and had to be towed to dealership. The problem has been confirmed by the dealer but they have had the vehicle for 2 days and cannot fix the problem. Dealer states code keeps coming up in BCM but they are not sure why or how to confidently fix it. There were not warnings or any symptoms of this problem as it drove to work fine that same morning.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11445068,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/27/2021","dateComplaintFiled":"12/27/2021","vin":"1gtr9ced7mz","components":"ENGINE","summary":"Famous lifter issue in the l84 engine. Hundreds of documented complaints and current class action lawsuit. I had to stop on a busy highway and it caused unsafe passing and irritated humans.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11444831,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/16/2021","dateComplaintFiled":"12/23/2021","vin":"1GTU9DED9MZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 15 MPH and making a turn, the vehicle lost power steering assist functionality. Additionally, the brake pedal was depressed several times but failed to respond. The parking brake, traction control, brake, engine, and headlights warning lights were illuminated. The contact also stated that the warning message \"Limited Power\" was displayed. The contact stated that he depressed the brake pedal with his two feet from a standing position and the vehicle decelerated and he pulled into a driveway. The contact was able to continue to drive the vehicle. The vehicle was taken to the dealer who diagnosed that the vehicle software needed to be updated. The contact stated that the vehicle was repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 10,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11443108,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/19/2021","dateComplaintFiled":"12/08/2021","vin":"3gtu9fed2mg","components":"ENGINE","summary":"On 11/19/2021. While on the express way our truck started sounding really bad. We drove it slower to a gm dealer in Highland MI. They said we had a misfire. And there was nothing they could do at this time. We drove a little further and it got worse. We had to stop at a rest area. After dark and in the freezing weather. We had it towed to a dealer in Frankenmuth MI. Our truck has 11,800 miles . It has a diagnostics report of Valve lifter defects left bank. Starter had to be replaced. And now gm wants to only fix to affected bank . But on the unsold trucks they will repair both banks as stated in service bulletin N212353840 . If we have one bad lifter they should all be replaced as for this not to happen again. As of 12/08 2021 it is still in the shop [XXX] Thank you INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11442943,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/03/2021","dateComplaintFiled":"12/06/2021","vin":"3GTP9EEL0MG","components":"ENGINE","summary":"2021 GMC Sierra 1500 AT4 6.2L engine, Little over 15000 miles, Purchesed May 2021. Drivining down the interstate with out warning, engine starting making back fire sounding noise, with a noticeable loss of power, I requested On Star to do a vehicle diagnostics, no faults was reported, No check engine light, temp was normal, oil pressure normal. The noise was off and on at first and then remained constant. Fortunataly I was able to make it safely back to my residents. I parked the vehicle and did a scan code and it did not have any codes, I did a pending code scan and it had a P0300 code. I started the engine and the noise was louder at first and then got quiter after about 15 seconds of running the check enging light came on I shut the engine down and did another scan it gave me a P0302 code. I feel that the vehicle is unsafe to drive and could cause a accident if it locks up on the highway. I contacted GM and reported the issue, they said take it to a near by GM dealer, I told them that I felt the vehicle was unsafe to drive and they tried to contact me with road side assistance but I was unable to get anyone on the phone. I feel that GM is ingnoring a known issue and that this will result in accidents and possible loss of life.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11442341,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2021","dateComplaintFiled":"12/01/2021","vin":"3gtu9bed2mg","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Prior to this incident I had lifter failure on my 2021GMC SierraAt 8464 miles, I was on my way to work and I heard a loud bang and I had to pullover off the highway, my dad had to come all the way out To get the vehicle because it had major engine damage and it was on a holiday so no one would come help me.The vehicle was in the shop for over a week getting these repairs done, upon receiving vehicle it had been a week and I received service four-wheel-drive messages on the dash.Trying to use four-wheel-drive after this was a no-go every time I push the button nothing would happen it would stay in two wheel drive.After this I made an appointment with the dealership for this issue to be fixed, as I was going to get readyTo leave again with the truck having no issues other than what I\u2019ve stated when I went to go start the truck nothing happened at all every light lit up on the dash and part of me thinks it\u2019s an electrical issue but the Other part of me thinks the motor is locked up. Also the lights would not shut off when I turn the vehicle off so I\u2019ll have a dead battery in the morning.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11441434,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/14/2021","dateComplaintFiled":"11/23/2021","vin":"1GTU9DEDXMZ","components":"ENGINE","summary":"Valve lifter defects. June, 2021: 7,619 miles: left side valve lifter defect necessitating need for valve, push rod replacement on left bank of engine November, 2021: 13,171 miles: right side valve lifter defecting necessitating need for valve and push rod replacement on right side of engine","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11436138,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/09/2021","dateComplaintFiled":"10/09/2021","vin":"3GTU9DETXMG","components":"STEERING","summary":"POWER STEERING STOP WORKING","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11435985,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/08/2021","dateComplaintFiled":"10/08/2021","vin":"3GTP9EED7MG","components":"STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"I started my truck this morning, drove it 3 miles, and all of a sudden got an ESC warning, Parking break warning, and a degraded power steering warning all at one time. My steering wheel started vibrating vigorously, a clanking sound started under the hood somewhere, and none of my safety features worked after.. Cruise Control, Vehicle Collision Control, Vehicle Gap sensors, etc.. The vehicle is currently at the dealer being looked at.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11435503,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/24/2021","dateComplaintFiled":"10/05/2021","vin":"1GTR9CED5MZ","components":"TIRES","summary":"I noticed a sway in the vehicle while driving down the highway, bad enough to pull over and check the tires and suspension. Took truck to dealer where upon inspection I was told that the cause was the tires' sidewalls are not stiff enough and the tires try to follow the grooves in the road. The dealer recommended changing the tires but had to defer to General Motors who denied the tire change under warranty. GM informed me that this is a normal condition of the tires on roads that have grooves cut in and would not be covered under warranty. I explained that I do not feel safe towing a trailer behind this truck and was told that they could not replace the tires but offered me multiple options for my trouble including: Onstar, service voucher which cannot be used on tires, accessory voucher which cannot be used on tires, and a wheel and tire protection plan which would not cover the issue at hand. I declined all of the offers as my only concern is having a truck that is safe to tow a trailer behind and new tires are required in order for me to have that. The truck is designed to be able to tow a trailer and I am too concerned to tow behind my brand new truck because the truck would induce a sway into the trailer posing a significant safety risk to myself and other motorists on the road. If this is a known issue, which it seems to be, then General Motors should not include these tires on trucks sold in markets with grooved pavement to reduce the risk of accidents resulting in injury or even death. I shouldn't have to spend an additional $1200+ on new tires for a vehicle that was less than a month old when I took it into the dealership.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"},{"type":"Tire","productYear":"9999","productMake":"GENERAL TIRE","productModel":"GRABBER HTS60","size":"275/60 R 20 115S","manufacturer":"Continental Tire the Americas, LLC"}]},{"odiNumber":11435093,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/10/2021","dateComplaintFiled":"10/01/2021","vin":"3GTU9DED2MG","components":"AIR BAGS","summary":"Vehicle purchased new in 2021; has less than 5,600 miles on it. Service Restraint System indicator light began coming on in September. At first intermittently, then every few seconds. Sent vehicle to dealer for repair on 9/27/21. Dealer states not safe to drive because airbag may not deploy in case of accident.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11434184,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/11/2021","dateComplaintFiled":"09/24/2021","vin":"3gtp9eel5mg","components":"ENGINE","summary":"a lifter went out. While driving on a turnpike going 80 mph the engine starting knocking. The truck had to be towed to a GMC dealership where they confirmed a lifter went bad. the truck is a v8 with 8,000 miles on. the dealership advised what the problem was and replaced 4 of the 8 lifters. No warning was given, as soon as the lifter went out there were all sorts of errors that started showing up including emissions issues.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11432369,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/07/2021","dateComplaintFiled":"09/09/2021","vin":"3GTU9FED5MG","components":"ENGINE","summary":"While driving on the highway my truck started to buck and had a loud engine knocking noise. Speed was greatly reduced so much so that I was going under 45 mph in a posted 65. The check engine light did not come on. While sitting on the side of the highway there was a severe engine knock only when the revs on the engine were increased. Oil pressure and cooling temps were as they should be. The next day on the way to the dealership the engine started knocking. This time the check engine light came on, speed was greatly reduced at this time. After about five miles the knocking stopped and the check engine light went out. The Dealership checked it out and stated the lifters were bad. It seems that this is a known issue with GM. I was told by the Dealership that there were two other trucks ahead of me with the same issue. Also, because this is such a prevalent issue with GM, they cannot keep up with the demand for parts. My Dealership is waiting for a head gasket. GM has known about the faulty parts for approximately two years, and they are only replacing some of the faulty, poorly made parts, hoping the other side of the engine will not develop issues and fail. I feel this is placing the driver and occupants at risk while driving down the highway and not being able to maintain posted speed limits, or just locking up and engine, and coming to an abrupt stop.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11431645,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/29/2021","dateComplaintFiled":"09/03/2021","vin":"3gtp9eed0mg","components":"FUEL/PROPULSION SYSTEM","summary":"I have had my gmc sierra 1500 for 2 weeks and it has less then 200 miles on it the first week I lost power the check engine light, air bag and traction control light started flashing and since then my engine light has be solid with code P0300 and it will intermittently loss power and start flashing. The dealer has it now but cannot figure out the issue. Total unacceptable for a brand new vehicle.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11431331,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/21/2021","dateComplaintFiled":"09/01/2021","vin":"3gtu9dedxmg","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"The truck has 7500 miles on it and the check engine light keeps coming on then goes back off. It is impossible to schedule service as the light goes off before it gets to dealer. The when driving the truck many times the check engine light will flash for a minute or so and then remain on steady. This is very frustrating and the dealer has found nothing. It has happened probably 10 times since the truck was new and continues now. The truck was just serviced and the dealer found nothing causing this.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11430809,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/27/2021","dateComplaintFiled":"08/27/2021","vin":"1gtu9fel6mz","components":"STEERING,SERVICE BRAKES,ENGINE","summary":"Driving the car it started backfiring and then the ESC light came on and the car engine seemed to become erratic as well as steering and braking error messages and the check engine started blinking. Very scary before I got it pulled over and very thankful I wasn\u2019t on the highway etc. I\u2019m seeing all the issues online sounds like the supposed fixes for the 2019 models having issues aren\u2019t solving the problem. I bought mine in April and 4 months later it\u2019s become unreliable.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11430578,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/22/2020","dateComplaintFiled":"08/26/2021","vin":"3GTU9DED4MG","components":"SUSPENSION","summary":"On 22 December 2020, I received a 2021 GMC Sierra 1500 SLT X31 Truck. The day that I drove it I notice that the Truck was riding as though it had a low Tire issue. It was riding bouncy. I had no low tire light. I checked the Tire Pressure and they all was over inflated. I brought the pressure back to range, but the Truck was riding the same over rough and bumpy roads that the rear end of the Vehicle was shifting from side too side when you hit a bumpy or on rough roads. it felt like the rear end was coming off the ground very frighten. I called GM they assigned a case number and I took the Truck to Three dealership with the same answer that all bolts were tighten to Spec. Ok I get that, but did not address the problem that the truck is doing. I am not comfortable driving this truck especially when you have no I deal when your terrain will change and the back end of y0our Vehicle moves from side to sider on you.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11430211,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/26/2021","dateComplaintFiled":"08/23/2021","vin":"3gtu9ced3mg","components":"ENGINE","summary":"Bought GMC Sierra 1500 brand new. At approximately 2300 miles the engine light started blinking. I took it in and they said they couldn't find anything wrong with it. At 3700 miles it started again and I took it in. It has a bent push rod causing engine failure.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11427090,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/27/2021","dateComplaintFiled":"07/29/2021","vin":"3GTU9FEL0MG","components":"ENGINE","summary":"GM has a lifter problem that causes complete engine failure. When this happens the engine completely locks up rendering the vehicle completely shutdown. This is happening over and over in early stages of 2021 Chevrolet and GMC Vortec V-8s. Mine happened at 13000 miles on a 2021 6.2L GMC Denali, and GM is only fixing the problem partially and as I understand with the same defective product that just failed. Also it is known this failure likely will happen again as it is a design flaw. If this happens in the wrong traffic situation it will be very dangerous. I am very concerned. When my vehicle was towed to dealer they had 7 other 2021 complete engine failures just like mine waiting for repair.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11426774,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/24/2021","dateComplaintFiled":"07/28/2021","vin":"1GTR9CED9MZ","components":"ENGINE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving in inclement weather, the vehicle stalled without warning. The contact looked under the vehicle and saw that engine oil was leaking from a puncture in the oil pan. The vehicle was towed to the local dealer however, the cause of the failure was not yet determined. The manufacturer was notified of the failure. The failure mileage was 5,800.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11423289,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/18/2021","dateComplaintFiled":"07/02/2021","vin":"3GTU9DED2MG","components":"STRUCTURE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 20-30 mph, she heard abnormal noises coming from the trunk of the vehicle, with no warning lights illuminated. The vehicle was taken to the dealer, where it was diagnosed that the dash line had detached from its holder and was rubbing against the frame of the vehicle. The vehicle was repaired, however, the failure persisted. The vehicle was taken back to the dealer who diagnosed that the drive axle, band, and rear pinion needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 420.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11421300,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/12/2021","dateComplaintFiled":"06/17/2021","vin":"3GTU9EET2MG","components":"AIR BAGS,SEAT BELTS","summary":"Airbag light and \"Service Safety Restraint System\" keep flashing on and off intermittently. Sometimes every 5 seconds. Sometimes once or twice a day. This is a known issue with 2021 GM trucks and SUVs. Trying to get vehicle in for service but dealer said they are booked 2 weeks out and won't given loaner vehicles at all anymore. The vehicle has less than 2000 miles on it.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11419885,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/20/2021","dateComplaintFiled":"06/07/2021","vin":"3GTU9DED9MG","components":"LANE DEPARTURE","summary":"The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at undisclosed speeds, the Lane Departure Assist warning failed to activate when the vehicle drifted out of the driving lane. The failure was intermittent. The cause of the failure was not yet determined. The vehicle was taken to the local dealer who was unable to identify the cause of the failure. The contact was informed that the vehicle operated as intended. The manufacturer was notified of the failure. The failure mileage was 100.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11418942,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/26/2021","dateComplaintFiled":"05/29/2021","vin":"1GTU9EET3MZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"This is the second time I stop at the grocery store for about 15 or 20 min, get back in the car push the start, then the truck keep cranking with no start for about 20 seconds. Then I try second time and it fires up.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11417422,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/14/2021","dateComplaintFiled":"05/17/2021","vin":"3GTU9FET5MG","components":"POWER TRAIN","summary":"THE CONTACT'S FATHER OWNS A 2021 GMC SIERRA 1500. THE CONTACT STATED THAT HER FATHER WAS DRIVING AT AN UNDISCLOSED SPEED, WHEN THE VEHICLE STALLED. THE VEHICLE STALLED THREE TIMES ON THREE SEPARATE OCCASIONS AND WAS TAKEN TO THREE DIFFERENT DEALERS. THE VEHICLE WAS FIRST TOWED TO Bill Kay Buick GMC (2300 Ogden Ave, Downers Grove, IL 60515) AND DIAGNOSED AS BATTERY FAILURE AND REPAIRED HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS THEN TOWED TO Phillips Chevrolet of Lansing (17730 Torrence Ave, Lansing, IL 60438) AND DIAGNOSED THAT THE TRANSMISSION CABLE CAUSED THE FAILURE. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED AFTER GETTING THE VEHICLE BACK FROM THE DEALER. THE VEHICLE WAS THEN DRIVEN TO Zeigler Buick GMC of Lincolnwood (6900 McCormick Blvd, Lincolnwood, IL 60712) BUT WAS NOT YET DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND A COMPLAINT WAS FILED. THE CONTACT WAS INFORMED THAT THE DEALER WANTED TO REPAIR THE VEHICLE. THE FAILURE MILEAGE WAS 3,000.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11417352,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/16/2021","dateComplaintFiled":"05/16/2021","vin":"1gtu9ded9mz","components":"ENGINE","summary":"5300 miles and when you accelerate it knocks and or ticks, and loss of power all lights on dash came on","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11415136,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/04/2021","dateComplaintFiled":"05/04/2021","vin":"3GTU9DEL5MG","components":"STRUCTURE,VISIBILITY/WIPER","summary":"SUN GLARE REFLECTS OFF CENTER CONSOLE CUP HOLDER WITH SUCH INTENSITY IT'S HARD TO FOCUS ON THE ROAD EVEN WITH SUNGLASSES ON.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11413684,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/04/2021","dateComplaintFiled":"04/24/2021","vin":"3GTP8CED1MG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"THE AUTO STOP FEATURE ON MY TRUCK IS DANGEROUS! THERE IS NO WAY TO PERMANENTLY DISABLE IT. WHEN PULLING INTO TRAFFIC FROM A STOP, THERE IS A SIGNIFICANT DELAY FOR THE CAR TO RESTART AND GET MOVING! I HAVE ALMOST BEEN IN SEVERAL ACCIDENTS BECAUSE OF THIS. FORGET THE $20 IN GAS THIS JUNK MIGHT SAVE SOMEONE OVER A YEAR! IT IS DANGEROUS","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11408633,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/17/2021","dateComplaintFiled":"04/18/2021","vin":"1GTU9DET0MZ","components":"ELECTRICAL SYSTEM,AIR BAGS,ENGINE","summary":"RETURNED HOME AFTER SOME SHOPPING. PARKED TRUCK IN DRIVE WAY. APPROXIMATELY 5 MINUTES AFTER RETURNING HOME MY WIFE SAW TRUCK SMOKING FROM UNDER THE HOOD. WITHIN ANOTHER MINUTE OR TWO THERE WERE VISIBLE FLAMES COMING FROM THE BACK EDGE OF THE HOOD. WE CALLED 911. WITHIN 5 MINUTES THE ENTIRE FRONT END OF THE TRUCK WAS ENGULFED IN FLAMES. THE FIRE DEPARTMENT ARRIVED AND PUT OUT THE FIRE BUT THE ENTIRE FRONT AND CAB OF THE TRUCK WAS DESTROYED. FIRE INVESTIGATORS DETERMINED FIRE STARTED AT BACK OF ENGINE COMPARTMENT NEAR BATTERY. VEHICLE WAS STOPPED PARKED IN OFF CONDITION. IN MY DRIVEWAY. NO MECHANICAL PROBLEMS WERE NOTICED ON RIDE HOME AND THERE WERE NO PANEL ALERTS FOR PROBLEMS.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11405103,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/09/2021","dateComplaintFiled":"03/27/2021","vin":"3GTU9CED3MG","components":"POWER TRAIN","summary":"TRANSMISSION SHIFTS HARD WHEN SHIFTING UP AND WHEN DOWNSHIFTING. VEHICLE JERKS WHEN GOING SPEEDS <40 AFTER COMING OFF HIGHWAY AT HIGHWAY SPEEDS >70.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11396897,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/15/2021","dateComplaintFiled":"02/19/2021","vin":"1GTU9DET8MZ","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"WHILE DRIVING DURING WINTER CONDITIONS WITH TEMPERATURE AT 3 DEGREES ON A RESIDENTIAL STREET WITH LIMITED TRAFFIC, THE DIESEL FUEL IN THE FUEL FILTER GELLED UP WHICH CAUSED THE VEHICLE TO DISPLAY REDUCE POWER MODE AND THEN IMMEDIATELY SHUT OFF AND WOULD NOT START. THE VEHICLE COASTED TO A STOP IN THE MIDDLE OF THE STREET WHILE IN TRAFFIC. THE OWNERS MANUAL LISTS UTILIZING TOP TIER DIESEL WHICH I DID. WHILE ADDITIVES ARE NOT NORMALLY NEEDED IN MOST STATES TO FUEL FOR FREEZING CONDITIONS EVIDENTLY THEY ARE NEEDED IN OKLAHOMA. THE FUEL FILTER HOUSING IS THE ONLY PLACE WHERE THE FUEL GELLED UP, WHICH APPEARS TO BE A THEME IN MOST GMC DIESEL TRUCKS AND DOES NOT EFFECT FUEL IN THE FUEL TANK DUE TO VOLUME. GMC HAS DONE NOTHING TO IMPROVE THE DESIGN OR INCREASE INSULATION TO THE THIN FUEL FILTER HOUSING. IF I HAD BEEN IN FAST TRAFFIC ON THE INTERSTATE IT WOULD HAVE RESULTED IN AN ACCIDENT AND POSSIBLE LOSS OF LIFE.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11396939,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/14/2021","dateComplaintFiled":"02/19/2021","vin":"1GT49LE75MF","components":"ENGINE","summary":"TL* THE CONTACT OWNS A 2021 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING AT 60 MPH, AN ABNORMAL NOISE APPEARED UNDER THE HOOD. WITHOUT WARNING AN EXPLOSION OCCURRED. THE CONTACT MANAGED TO VEER TO SHOULDER OF THE ROAD GET OUT THE VEHICLE TO CHECK AND SEE WHAT THE NOISE WAS. THE CONTACT NOTICED FLAMES APPEARED BY THE REAR WHEEL ON THE DRIVER SIDE. THE CONTACT GRABBED THE FIRE EXTINGUISHER AND EXTINGUISHED THE FLAMES. THE FIRE DEPARTMENT WAS CONTACTED HOWEVER NO REPORT WAS FILED. THE POLICE WERE CONTACTED BUT NO REPORT WAS FILED. THE VEHICLE WAS TOWED TO QUALITY BUICK GMC, INC (7901 LOMAS BLVD NE, ALBUQUERQUE, NM 87110 (505) 765 1300) WHERE IT WAS DIAGNOSED AND DETERMINE THE ENGINE WAS FAULTY THAT WOULD BE COVERED UNDER WARRANTIES TO REPAIR. THE VEHICLE WAS REPAIRED. HOWEVER, THE CONTACT FEELS UNSAFE DRIVING THE VEHICLE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE STARTED AND STARTED AN INVESTIGATION. THE FAILURE MILEAGE WAS APPROXIMATELY 2,800.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11388759,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/24/2020","dateComplaintFiled":"01/18/2021","vin":"3GTP9EEL4MG","components":"STEERING,LANE DEPARTURE","summary":"BRAND NEW 2021 SIERRA AT4. KEEP LANE ASSIST HASN'T WORKED SINCE DAY ONE. LANE DEPARTURE WARNING EITHER. IT'S BEEN TO THE DEALER TWICE AND STILL NO SOLUTION. IT WON'T TURN ON","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11383585,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/13/2020","dateComplaintFiled":"12/15/2020","vin":"1GTP9EEL4MZ","components":"ENGINE","summary":"THE VEHICLE WAS BOUGHT BRAND NEW AND WAS ONLY DRIVEN FOR A WEEK. IT WAS IN MOTION ON THE FREEWAY WHEN THE ENGINE STARTED TO SOUND NOISIER THAN USUAL, LIKE THAT OF AN OLDER TRUCK. IT WAS HARD TO NOTICE ON HIGHER SPEEDS ON THE FREEWAY, BUT UPON SLOWING DOWN ON CURVES, IT GOT MORE OBVIOUS THAT SOMETHING WAS REALLY WRONG BECAUSE THE NOISE SOUNDED LIKE SOMETHING WAS LOOSE INSIDE THE ENGINE. THERE WAS NO 'CHECK ENGINE' LIGHT OR ANY OTHER WARNING LIGHTS. UPON EXITING THE FREEWAY, THE ENGINE SHUT OFF COMPLETELY WHILE IN MOTION. FORTUNATELY, I WAS ABLE TO PULL IN A PARKING LOT AND PARK IT SAFELY. THE ENGINE WOULD NOT START SAFELY AFTER THAT, AND 'CHECK ENGINE' ACTIVATED. THE VEHICLE IS CURRENTLY BEING DIAGNOSED AT A DEALERSHIP. LAST UPDATE WAS THAT THE ENGINE WAS BEING TAKEN APART COMPLETELY BECAUSE THEY SAID IT'S DEFINITELY INSIDE IT.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11378245,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":1,"numberOfDeaths":0,"dateOfIncident":"12/06/2020","dateComplaintFiled":"12/07/2020","vin":"1GTR8CEKXMZ","components":"SEATS","summary":"REACHED FOR A FALLEN OBJECT BETWEEN THE DRIVER AND MIDDLE FRONT SEAT AND THERE IS A RAZOR SHARP PIECE THAT TOOK A LARGE CHUNK OUT OF THE HAND WHICH CAUSED HEAVY BLEEDING AND MEDICAL SUPPLIES TO STOP. THE VEHICLE WAS STOPPED AND JUST TRIED TO RETRIEVE FALLEN OBJECT BETWEEN THE SEATS. THE INCREDIBLY SHARP PARTS NEED TO BE CUT OR REMOVED FROM THIS AND OTHER SIMILAR VEHICLES OR COVERED WITH SOMETHING. IT WAS BARE METAL EXPOSED OUT WITH SHARP EDGES THAT CUT THE RIGHT HAND SO BADLY.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11378394,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/07/2020","dateComplaintFiled":"12/07/2020","vin":"3GTU9AEFXMG","components":"STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"STARTED VEHICLE EVERYTHING WAS NORMAL SHIFTED VEHICLE INTO DRIVE PROCEEDED FORWARD. WHILE DRIVING VEHICLES STEERING SEIZED I WAS UNABLE TWO MOVE THE STEERING WHEEL. IT WAS ALSO VERY DIFFICULT TO STOP THE VEHICLE BRAKES WERE NOT WORKING PROPERLY. MESSAGES CAME UP ON TO DISPLAY READING SERVICE POWER STEERING AND BRIEFLY IMESSAGE ABOUT THE BRAKES FLASHED QUICKLY ON THE MESSAGE BOARD. AT THAT POINT TURN THE VEHICLE OFF AFTER I GOT IT STOPPED TURN IT BACK ON SAME MESSAGE STILL UNABLE TO TURN THE STEERING WHEEL REPEATED THIS SEVERAL TIMES APPROXIMATELY FOR FOURTH TIME THE MESSAGE CLEARED AND THE VEHICLE WAS BACK TO NORMAL. THIS OCCURRED ON A CITY STREET.","products":[{"type":"Vehicle","productYear":"2021","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]}]}