{"count":434,"message":"Results returned successfully","results":[{"odiNumber":11747468,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2026","dateComplaintFiled":"06/30/2026","vin":"3GTP9EEL5LG","components":"ENGINE","summary":"The engine had a critical failure at 49,000 miles. It was replaced under the drivetrain warranty.  That came with a 12 Month, 12,000 mile warranty.  Now I have a SECOND engine failure at 59,000 Miles. This will come with only a 12 month 12,000 mile warranty because it is NOT under recall.  ALSO my transmission is now slipping and they are replacing the Valve Body.  They had my truck for 4 months the first time and one month this time.  These are the exact same issues with 2021 - 2025 GMC 6.2L and 10 Speed Transmissions.  If I the issue had happened 6 months later I would have NO warranty. I want a recall on 2020's please.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745856,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2026","dateComplaintFiled":"06/23/2026","vin":"3GTU9FEL7LG","components":"ENGINE","summary":"My 2020 GMC Sierra 1500 Denali with L87 6.2L V8 suffered a catastrophic, silent seizure at 108,000 miles. Driving at highway speeds, warning light stating shift to neutral and press start, engine completely shut off and would not turn back on. I was in the car with my 3 children about to make a turn across a 4 lane highway. I was able to recognize that there was power loss quickly enough that we were safely within the turn median, and fortunately a \"good samaritan\" stopped to assist us in getting across the highway into a parking lot. I hate to think what would have happened had this power loss occurred during the turn. There was no warning light, sound or other issue prior to this occurring. The vehicle has been meticulously maintained with all services occurring at my local GMC dealership. We had the truck towed to the dealership who confirmed the engine needs to be replaced.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745896,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/15/2025","dateComplaintFiled":"06/23/2026","vin":"3GTU9DED0LG","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that upon taking the vehicle to the dealer for a transmission fluid flush and refill, the contact was informed that the transmission was inoperable, and the vehicle could not be driven to the residence. The dealer determined that the torque converter needed to be replaced. The dealer replaced the torque converter and advised the contact to drive over 1,000 miles for the issue to self-correct. The contact stated that the vehicle continued to shudder and drive bumpy while driving after 1,000 miles. The vehicle was taken back to the dealer, where the torque converter was replaced a second time; however, the failure persisted. The dealer informed the contact that the diagnostic test results were sent to the warranty company for the transmission replacement approval. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 85,165.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745292,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/10/2026","dateComplaintFiled":"06/19/2026","vin":"3gtp9eel0lg","components":"ENGINE","summary":"\u2022 While driving a loud popping and clicking noise started coming from the engine and the truck started shaking. The vehicle is available for inspection  \u2022 It was a busy two lane road and I had to continue about 30mph under the speed limit to safely get off the roadway \u2022 upon start up the engine clicks and pops with rough idle and the truck shakes. A mechanic looked at it and stated it sounds like a lower rod bearing noise \u2022 No further inspections have been done \u2022 A Service ESC warning popped up when the engine started making noise during the incident. The truck had been taken in twice for rough idle and engine noises prior to 100k miles, but the dealership stated that the noise and feel was normal for the 6.2L engines","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11745158,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/15/2026","dateComplaintFiled":"06/18/2026","vin":"3GTP9EELXLG","components":"ENGINE","summary":"While driving at night, a low oil pressure warning light illuminated on the dashboard. The following morning, I checked the oil level using the dipstick, which indicated a normal reading. Based on this, I proceeded to drive the vehicle. Shortly after departing, the engine began knocking severely. I immediately stopped and returned home.  The vehicle was towed to a GMC dealership for diagnosis. The dealership determined that the engine had experienced catastrophic failure and required complete replacement. I was quoted $11,000 for the repair.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11743308,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/09/2026","dateComplaintFiled":"06/10/2026","vin":"1GTP9EEL4LZ","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra. The contact stated while driving at an undisclosed speed, the transmission hesitated and shifted unusually rough. No warning lights were illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with a transmission valve issue. The contact was advised that the power train software needed to be updated. The contact was informed of an unknown recall; however, the VIN was not associated with a recall related to the failure. The vehicle was not repaired. The dealer was made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 88,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11742790,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/28/2026","dateComplaintFiled":"06/08/2026","vin":"3GTU9CEDXLG","components":"STEERING,ELECTRICAL SYSTEM,ENGINE","summary":"- THE GROUND STRAP CORRODED AND BROKE APART.  YES, I HAVE THE GROUND CABLE THAT FAILED, IF NEEDED FOR INSPECTION. - YES!!!  THE TRUCK'S STEERING KEPT GOING IN AND OUT OF MANUAL STEERING AND THE ENGINE REDUCED IN SPEED ALLOWED, AND THEN THE ENGINE CUT OUT ON ME COMPLETELY - WHILE I WAS IN THE MIDDLE OF A BUSY ROAD TRYING TO TURN ONTO A SIDE STREET.   THEN THE ENGINE WOULD NOT RESTART. - I HAD THE TRUCK TOWED ON A FLAT BED TO A GMC DEALERSHIP NEARBY.  THEY CONFIRMED THE ISSUE WAS THAT THE GROUND STRAP FAILED.  THEY REPLACED THE PART AT MY COST, WHICH FIXED THE ISSUES. - YES, THE DEALERSHIP INSPECTED AND CONFIRMED THE ISSUE WAS THE CORRODED AND BROKEN GROUND STRAP. - YES, THERE WERE MANY WARNING MESSAGES THAT STARTED TO APPEAR ABOUT 3-4 DAYS PRIOR TO THE COMPLETE FAILURE OF THE ELECTRICAL SYSTEM.  I STARTED SEEING A MESSAGE ABOUT SERVICING THE TRAILER BRAKE SYSTEM, AND ANOTHER ABOUT SERVICING THE SIDE DETECTION SYSTEM.  THEN A SERVICE POWER STEERING WARNING AND TO DRIVE WITH CARE.  THE CHECK ENGINE LIGHT WAS OFF AND ON OVER THAT TIME.   - I CHECKED THE WIRE CONNECTIONS IUNDER MY VEHICLE TO CHECK FOR BROKEN WIRES OR CORROSION.  I DID NOT FIND ANY.  I THEN CHECKED IF A HARD BATTERY RESET WOULD WORK, BUT IT DID NOT.  LASTLY, I BOUGHT A NEW BATTERY TO REPLACE THE EXISTING ONE, EVEN THOUGH THE EXISTING BATTERY HAD NO ISSUES EVEN WHEN TESTED UNDER LOAD.  THAT RESOLVED THE ISSUE FOR ABOUT 35 MINUTES THAT NIGHT AND THEN THE NEXT MORNING.  AFTER THAT, THE ELECTRICAL SYSTEM FAILED AND THE TRUCK WOULD NOT START.  AT THAT POINT I GOT TOWED IN TO THE GMC DEALERSHIP.  I HAD TO LEAVE THE TRUCK FOR A WEEKEND, AND THE DEALERSHIP DID NOT COME UP WITH A LOANER, EVEN THOUGH I REQUESTED ONE.  I GOT THE TRUCK BACK ON MONDAY AFTERNOON AND EVERYTHING WAS WORKING FINE SINCE THEN.   - OVER THAT WEEKEND, I WAS AMAZED TO FIND OUT ABOUT THE BULLETIN GM RELEASED TO COVER ONLY SOME TRUCKS FOR THE ISSUE, BUT NOT OTHERS!  MY TRUCK IS STILL NOT COVERED, DESPITE THE OBVIOUS SAFETY ISSUES I EXPERIENCED!!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741871,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/11/2026","dateComplaintFiled":"06/03/2026","vin":"3GTU9FET1LG","components":"POWER TRAIN,UNKNOWN OR OTHER","summary":"Transmission, going towards home up a mild hill, broke top of hill trans shifted to next gear, rear wheels locked up and tires squealed.  doing around 40 mph.  Took it directly into the shop, and the trans was destroyed inside.  broken parts in the pan.  Trans could not be repaired, had to get a   new transmission.    I limped to the dealership, just noisey under vehicle.  There was special coverage till             115,000 mile, had 97,062 miles on it. Just like it blew up inside.   I was without a vehicle for 5 weeks, but I did have an extended warranty  which it paid all of it except $ 1404.01, and I had to pay 2 weeks of car rental for 893.00.   The transmission $ 6782.97 , and I would like reimbursement for what I paid.  I could only go 10 to 15 mph to the repair shop, which was 7 miles away.  GM states it was something else at the dealership, but it was parts all over inside of the pan when they took it apart.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11741474,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/30/2026","dateComplaintFiled":"06/02/2026","vin":"3GTU9DED2LG","components":"ELECTRICAL SYSTEM","summary":"Fire started under passenger side front seat dashboard when rear defrost was turned on.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11740779,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/28/2026","dateComplaintFiled":"05/29/2026","vin":"1GTU9FEL1LZ","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"I again have noticed intermittent pulsing at low to medium speeds. At roughly 1k-2k rpm the engine at or about 10-20 mph is pulsating or hesitating with an obvious pulse which you can see on the tachometer as well (bouncing.) It seems like there is either a computer, fuel flow or electric issue. Also, at speeds up to the 40 mph range, this is happening as well. Yesterday while towing a small 7'x12' empty dual axle trailer I noticed it again, I occasionally use my trailer to haul small loads up to 4500lbs. This has happened before but this time I decided to notate this on your site, since reading about ongoing problems with the 2020 6.2L GMC Sierra 1500. I was aware of the other following years, 2021-2024? issues and that is why I purchased this 2020 year model.  My truck will be available for inspection when the request is sent to me. Safety was not an issue, I ran my truck most of the day. I have not yet notified my Chevrolet dealer, Roger Dean, Cape Coral, FL.  My truck has not yet been inspected for this issue. There were not any lights or warnings on display at time of incidents.  Thank you, [XXX]  [XXX]  [XXX]  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739911,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/28/2026","dateComplaintFiled":"05/25/2026","vin":"1gtu9fel3lz","components":"ENGINE","summary":"My engine suffered an internal catastrophic event, and needs to be replaced","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739749,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/23/2026","dateComplaintFiled":"05/23/2026","vin":"1GTR9BEK6LZ","components":"ENGINE","summary":"Good evening, I want to formally document what happened today regarding my GMC Sierra after I brought it to the dealership on Friday morning for transmission concerns that I had already reported.  At that visit, the vehicle was inspected, and I was informed that the truck was still safe to drive while waiting for the extended warranty approval for the replacement parts that were needed. Unfortunately, today my family and I experienced a very serious and frightening incident on the expressway. While driving, the truck suddenly lost power, barely moved forward, and began shaking violently. We were placed in a very dangerous situation in traffic and struggled with great difficulty and fear just to make it home safely. Once we arrived home, the vehicle completely shut off and would not restart again. This situation was extremely alarming, especially because I had already reported the transmission problems and trusted the guidance given to me that the vehicle was still drivable. My family\u2019s safety was put at risk, and I need this matter to be treated with urgency and seriousness.  Please advise immediately on the next steps regarding the vehicle, towing assistance if necessary, and how this situation will be properly addressed.  Thank you.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739758,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/15/2026","dateComplaintFiled":"05/23/2026","vin":"3gtu9bed7lg","components":"ELECTRICAL SYSTEM","summary":"2020 GMC sierra 1500 infotainment system including navigation,OnStar and voice command, stoped working on Friday May 15th with no prior warning. These systems are integral for modern safe travel and severely affects the value and driver confidence in the vehicle. It seems to be running mechanically sound but, with some of the communications and information systems not working properly I am unsure how much of the info is incorrect like the clock (which can not be set manually). I have scheduled an appointment with the dealer for June 2nd the earliest date available.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11739135,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/12/2026","dateComplaintFiled":"05/20/2026","vin":"3GTU9DED2LG","components":"STEERING","summary":"A known problem with these trucks is ground strap failure. I was driving and all the sudden lost power steering which almost caused an accident. There is a customer satisfaction program N252515590 that covers 2019-2024 trucks but mine was not included in this for some reason.  I did have the truck fixed a my cost and was looking to get my money back from GM.  I'm not sure if you can help with this but wanted to make a report that is happening with more trucks then they are fixing.  If you need any other info from me please let me know","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11738578,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/07/2026","dateComplaintFiled":"05/18/2026","vin":"3GTU9DED1LG","components":"ENGINE","summary":"Sitting at a red light and when the light turned green, the engine made a noise and lost power while trying to cross the intersection.   The check engine light came on along with some other lights.  It was then towed to a mechanic and the engine had to be replaced due to failure of the lifters.  The mechanic said it is a common issue with the GM 5.3 engine but unfortunately their has not been a recall.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11736973,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/10/2026","dateComplaintFiled":"05/11/2026","vin":"3GTU9DEL3LG","components":"ENGINE","summary":"2020 GMC Sierra 1500 began experiencing a slight knocking sound - mechanic diagnosed as a crankshaft issue.  As of last night, 5/10, the truck's knocking sound got extremely loud, the exhaust pipe emitted smoke, and the truck began \"bucking.\"  No warning messages or lamps appeared.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11737142,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/08/2026","dateComplaintFiled":"05/11/2026","vin":"3GTP9EEL2LG","components":"ENGINE","summary":"6.2L V8 engine. 2020 build, GMC Sierra 1500 series. Same engine in the existing recall for 2021-2024 models. Received a call from the service department of the dealership that after changing the oil and restarting the truck to reset the oil change indicator the engine shut down.   Assistant service manager, Stephen Poulson  [XXX] ) called and provided information that the engine seized and that the technician cannot manually forward or reverse the engine with a breaker bar. According to the technician, this is indicative of a catastrophic failure consistent with the existing recall.  The vehicle is currently at Carr Vancouver Buick GMC and is available for inspection.  NHTSA has permission of this owner to inspect this vehicle involved if they choose.   INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11736251,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/07/2026","dateComplaintFiled":"05/07/2026","vin":"3GTP9EEL8LG","components":"ENGINE","summary":"Complete engine failure with 62,500 miles. Truck appears to have the same problem as the 21-2024 which is currently recalled and engines are being exchanged.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11735414,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/15/2026","dateComplaintFiled":"05/03/2026","vin":"3GTU9DEL3LG","components":"ENGINE","summary":"We heard a knocking noise and took the truck to the nearest GM dealership.  The engine had to be taken apart. The engine is a L87 6.2 liter V8.  The GM dealership service department diagnosed camshaft damage that caused lifter failure.   We have since been informed that GM has known about the failure of this engine for many years.  In our case, we were fortunate that the engine did not fail when we were on the expressway.  This is a huge safety issue.  There were no warning lamps or messages from the vehicle, but we heard the knocking noise. We are facing a minimum of a 10,000 dollar repair and will not feel confident that this engine will not put our safety at risk in the future. We understand that the NHTSA has initiated an Engineering Analysis regarding this engine for the model years 2019 to 2021.  (EA25007).  We wanted you to have the  information of another dangerous engine failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11734729,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/16/2025","dateComplaintFiled":"04/30/2026","vin":"3GTP9EEL3LG","components":"ENGINE","summary":"On 6/27/22 my 2020 gmc sierra 1500 at4 6.2L had lifter failure.  The dealer fixed that problem and on 7/1/22 again has lifter failure. The dealer fixed that problem again. On 7/13/22 a third time engine had lifter failure again. I requested they need a different engine to be installed and GM agreed andthey install an L87 2022 engine. This engine seemed weak and not right since it was installed. On 10/13/222i took the vehicle in to the dealer with a complaint of ticking noise from engine area and complaint of shifting hard. The fix the shifting but nothing was wrong with engine according to the dealer. On 3/15/24  the noise are worse and I can smell fuel and noticed white milky residue on the oil cap plus a growling nose coming from engine. Coolant keeps going low and white smoke out the exhaust. The dealer does diagnosis and again nothing is wrong. Now starts the oil consumption testing and me letting the dealer know that I can smell oil and exhaust but they can't. On 8/29/2024 I take truck in for another diagnosis for rattle sounds I'm hearing under the hood from the engine especially when you accelerate. I pay $149.49 for the dealer to find the noise and they tell me they can't find anything, but everyone who has rode in the truck can. On 1/27/2025 I take the vehicle in again and the dealer does the valve cover leaking and replaces that is covered. On 2/3/2025 again vehicle back to dealer cause I can smell antifreeze and burning oil smell. The only thing they found was the muffler had a Lil leak so they wanted me to get it welded which i did and so can smell the oil. On 6/16/2025 I take the vehicle in for oil change and leave to go home then go to work about 95 miles or more and noticed after I parked and was working before I was going to head home there was a huge puddle of oil under the vehicle. I took pics.  Found after inspecting my vehicle the oil cap was not in filer tube but instead sitting up on air shelf above radiator. Oil filter was about 3 turns loose.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11734885,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2026","dateComplaintFiled":"04/30/2026","vin":"3GTP9EEL8LG","components":"POWER TRAIN,ENGINE","summary":"I\u2019m scared to drive my vehicle because of the 6.2L V8 ongoing engine failures! I believe it to be unsafe for travel never knowing when the engine will fail. Now with over 1 Million failures of this engine!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11734531,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2026","dateComplaintFiled":"04/29/2026","vin":"3GTU9FET2LG","components":"VEHICLE SPEED CONTROL,SERVICE BRAKES,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle decelerated to 30 MPH. The check engine warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the timing belt needed to be replaced. The part was on back order. The vehicle was not repaired. The contact stated the vehicle previously experienced brake failure, sensor failure, and glow plug failure. The manufacturer was contacted, but no assistance was provided. The BBB referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 80,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11734522,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/04/2022","dateComplaintFiled":"04/29/2026","vin":"1GTU9FEL5LZ","components":"ENGINE","summary":"Driving on highway, engine light came on with many warning lights.  Was just starting on a trip to SC then OH to help father for a surgery.  Lifters went bad within fist 5-6k miles on the truck (6.2L) causing other damage to the engine such as bent rods (etc).  Dealer repaired all DFM Lifters as there were failures on both sides of the engine, but it still sounds like there are issues internally.  It is a 2020 manufactured in 2019, I have not had additional mechanical issues, but I have purposely not driven it as much since I feel that it is not dependable.  It currently only has about 27k miles and sounds worse than my 2007 Lexus engine with 180k+ miles.  I wanted to fill this out, so you have the data for the engineering investigation.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11733580,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/14/2026","dateComplaintFiled":"04/24/2026","vin":"3GTU9FELXLG","components":"ENGINE","summary":"My 2020 GMC Sierra 6.2L (only 46,000 miles which is under warranty mileage criteria), suffered catastrophic engine failure while at 40 miles per hour out of no where and rolled without power for about ~60ft. Power came back on, and I was able to get closer to the dealership but again, lost all power and rolled for about 60ft again right in front of the dealership. The truck died while attempting to make a left turn (in oncoming traffic), it got going again in time to finish the turn.   When I pulled into the dealership it pulled code P0016 which is the same code for the 2021-2024 recall currently for the 6.2L GM engine. I had all oil changes completed on time and can show evidence of them. Other repairs, recalls etc were completed at the GMC dealership.   The 2020 Sierra 6.2L should absolutely be included on the GM recall. Same issues as 2021-2024. Funny how 2020's just reached over on time limit for warranty.   The repair estimate for my truck is over $13K!!!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11733360,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2025","dateComplaintFiled":"04/23/2026","vin":"3GTP9EEL6LG","components":"ENGINE","summary":"I took my 2020 GMC Sierra in for an oil change. The engine seized when it the technician tried to restart the car. We had it towed to GMC where they confirmed the engine seized. The oil repair shop then replaced the engine and when doing so confirmed the original threw a rod which is the same recall issue that is occurring with the 2021-2024 models. I have since taken the car to GMC for a full inspection and made additional repairs. The vehicle is available for future repairs.   My safety and others are at risk as the engine could seize leaving my family stranded or endangering others on the road if the seizure occurs while driving. Yes the vehicle was inspected at the GMC dealership and the shop where the engine was replaced with another L87 engine. there was no warning the engine seized after an oil change.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11733029,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/18/2026","dateComplaintFiled":"04/22/2026","vin":"1GTU9FEL0LZ","components":"ENGINE,ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed 60 miles away from home, the vehicle lost automotive power and stalled. The contact stated that the vehicle started smoking. Several unknown warning lights were illuminated. The vehicle was taken to a local dealer, where it was diagnosed and it was determined that the failure was due to an internal failure with the camshaft and the engine. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the local dealer for assistance. The failure mileage was approximately 167,570.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11732880,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/30/2026","dateComplaintFiled":"04/21/2026","vin":"3GTP9EELXLG","components":"POWER TRAIN,ENGINE","summary":"After owning this truck a little over a year I\u2019ve had to replace the transmission and now it\u2019s in the because the motor sounds like a bag of marbles was put in it and the warranty company is a joke they only want to replace just the cam and lifters but yet the dealership hasn\u2019t be authorized to go to the bottom of the motor to check it out this truck has been nothing but a lemon!!!!!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11731599,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/17/2026","dateComplaintFiled":"04/16/2026","vin":"3GTP9EELXLG","components":"ENGINE","summary":"While driving on the highway, my engine failed unexpectedly and I had to coast across the highway without power. I had the vehicle towed to a GM dealership, where I was informed the failure was due to a lower-end engine issue and that a full engine replacement was necessary.  I am aware of known issues with GM\u2019s 6.2L engines and asked the dealership about the related recall. They acknowledged that the failure I experienced is consistent with the symptoms seen in the defective 6.2L engines. However, they stated that because my truck is a 2020 model, it does not fall within the affected VIN range.  I ultimately paid nearly $11,000 for a new engine. Given the nature of the failure and its alignment with known issues, it is difficult to believe this was merely coincidental. I strongly believe the same defect exists in my engine, despite it not being included in the current recall range.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11730820,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/03/2026","dateComplaintFiled":"04/13/2026","vin":"1gtu9fel2lz","components":"ENGINE","summary":"There is a click/ticking noise when vehicle is started. Noise gets louder and faster when accelerating. Have taken vehicle to 2 mechanic shops and been told by both places it is bad lifters and exhaust manifolds. I took this truck in because of loss of power. This issue has put me in unsafe/ dangerous positions on multiple occasions.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11729751,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/22/2026","dateComplaintFiled":"04/07/2026","vin":"3GTU9DETXLG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle went into LIMP Mode, and several unknown warning lights were illuminated. The vehicle lost automotive power. The vehicle was taken to the dealer to be diagnosed. There was a knock coming from the engine, there was fuel injector failure, a heated oxygen sensor control module Bank 1 failure, and fuel system failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 134,648.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11729552,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/23/2026","dateComplaintFiled":"04/06/2026","vin":"1GTU9CET6LZ","components":"ELECTRICAL SYSTEM","summary":"Infotainment screen is flashing different colors and doesn\u2019t work anymore.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11728804,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2026","dateComplaintFiled":"04/02/2026","vin":"3gtp9eel9lg","components":"ENGINE","summary":"When the truck was idling the dod/afm turned on and disabled a cylinder and now I\u2019m just having codes pop up for cylinder misfires","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11727414,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/24/2025","dateComplaintFiled":"03/27/2026","vin":"3GTU9BET4LG","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving on several occasions at various speeds, the vehicle started shaking and slipped in and out of gear, with the message \"Idle Transmission\" displayed. The vehicle was pulled over and shifted into park(P) and then to drive(D). There was a loud banging sound coming from the rear of the vehicle. The vehicle was towed to an independent mechanic, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be repaired. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 80,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726877,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/27/2026","dateComplaintFiled":"03/24/2026","vin":"3GTP9EEL2LG","components":"ENGINE","summary":"My engine started knocking horribly, I need to get a proper diagnosis but cannot afford to have a shop look at it. I have been building engines my entire life and am certain the rod bearings have failed. The engine has a distinct knock under acceleration, you can hear it clearly when pulling away from a stop sign for example.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726286,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/24/2026","dateComplaintFiled":"03/23/2026","vin":"3GTU9EET4LG","components":"VEHICLE SPEED CONTROL,ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at 65 MPH, the DEF tank failed. The vehicle went into three phases of LIMP Mode and the vehicle unexpectedly decelerated while driving. The DEF system service message was displayed. The vehicle was taken to the local dealer, where it was diagnosed with DEF tank failure, and the tank needed to be replaced, even though the tank was full. The part was on backorder for several weeks. The contact was not provided with a loaner. The vehicle was repaired. The manufacturer was contacted and opened a case, but no additional assistance was provided. The failure mileage was approximately 70,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726349,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/31/2025","dateComplaintFiled":"03/23/2026","vin":"1GTP9EEL2LZ","components":"ENGINE AND ENGINE COOLING,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that the vehicle made an abnormal sound while idling. There was no warning light illuminated. The vehicle was taken to the dealer, where the engine was disassembled, and the dealer determined that the crankshaft and the thrust bearings had failed. The vehicle was repaired. The contact related the failure to NHTSA Action Number: EA25007 (Engine, Engine and Engine Cooling). The manufacturer was notified of the failure and partially covered the repair cost. The failure mileage was 60,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726576,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/30/2025","dateComplaintFiled":"03/23/2026","vin":"1GTU9FEL8LZ","components":"STRUCTURE,UNKNOWN OR OTHER,VISIBILITY/WIPER","summary":"The frame of the back window is cracking allowing water to come in through the back glass. This is causing the headliner and other components such as air bags and other electrical components to get wet and damaged.  This could cause risk of fire or failure of safety components within the vehicle such as air bags, cameras and other sensors. With water intrusion comes the high risk for mold to develop and cause serious health risks. GMC is aware of this issue and will not agree to repair it. A GMC dealer has inspected the glass and said it was a faulty seal but since it's not in the 3 year warranty window, it's not covered.  Independent auto glass companies state they have seen this issue many times and the glass seal is faulty.  GMC should do the right thing and fix this issue. This devalues the vehicle and the GMC brand and poses serious risks to driver. I have created a case with GMC and submitted photos, videos and dealership estimates for proof.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11726088,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2026","dateComplaintFiled":"03/21/2026","vin":"1GTU9FEL9LZ","components":"ENGINE","summary":"To the best of my knowledge\u2026  My 2020 GMC Sierra Denali with a 6.2L engine and 74,000 miles had a complete engine replacement. One lifter on bank 2 was stuck, and the push rod in the cylinder was bent. The engine made a popping noise when starting. I took it to a GM dealership, where they quoted $9,200 to repair the issue or $9,600 for a brand-new engine with a 3-year/100,000-mile warranty.  I know there is open recalls for 21\u2019-24\u2019 Models, but I would like some help with mine. This kind of problem shouldn\u2019t happen on a GMC - loaded truck with only 74,000 miles. Thank you!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725751,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/19/2026","dateComplaintFiled":"03/20/2026","vin":"3GTU9BET7LG","components":"POWER TRAIN,ELECTRICAL SYSTEM","summary":"Truck broke down with a rear-wheel lockup and had the transmission replaced in June 2025. In December 2025 and February 2026, truck lost power two times and entered limp mode while on a major highway and major interstate. The problem was misdiagnosed in June 2025, diagnosed properly in December 2025, but not properly repaired, and diagnosed properly in February 2026. All three times the vehicle had this issue, two of the same exact DTCs were present. This is a safety defect, and I have lost all confidence that the vehicle is reliable enough and safe enough for myself and my family.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725605,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/07/2026","dateComplaintFiled":"03/19/2026","vin":"3GTU9CET5LG","components":"ENGINE","summary":"The 10L80 transmission had a catastrophic failure just outside of the GM warranty. At under 70K miles the pump gears came apart and sent metallic debris throughout the entire transmission and exhaust gaskets converter next to the transmission. These will need to be replaced.   I have found multiple cases online with this 10L80 transmission where there has been significant problems with these transmissions blowing up or even causing momentary lockup with the wheels. This transmission is notorious for problems but has not yet been recalled.   My mom and nephews were in the vehicle when it broke down putting their safety at risk on the the highway.   This problem was confirmed by the GMC dealership here in Ruston, LA. The dealership has done the mechanical inspection.   The engine started making an extremely loud noise and the warning lights did not even come on until I attempted to start it later after the breakdown.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11725236,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/18/2026","dateComplaintFiled":"03/18/2026","vin":"1GTU9EET1LZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while starting the vehicle, the engine hesitated while turning over. The vehicle started with the check engine warning light illuminated, and the DEF (Diesel Exhaust Fluid) sensor light was illuminated. The message \u201c94 miles before vehicle enters LIMP Mode\" was displayed and instructed the contact to see the Diesel Exhaust Fluid section of the Owner's Manual. The vehicle was restricted to a 65 MPH max speed. The vehicle was towed to a dealer, where it was diagnosed, and it was determined that the DEF tank pump assembly had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 121,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11724546,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2026","dateComplaintFiled":"03/16/2026","vin":"3GTN8AEF5LG","components":"ELECTRICAL SYSTEM","summary":"Odometer Fraud. The contact attempted to purchase a 2020 GMC Sierra 1500. The contact discovered a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the mileage was 75,000. At the time of registration, the Carfax Report indicated that the mileage was 175,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11724575,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/13/2026","dateComplaintFiled":"03/16/2026","vin":"3gtu9fel0lg","components":"ENGINE","summary":"Vehicle has 28,000 miles and auto shop states that the engine is blow, it's knocking and vibrating throughout the engine.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11724457,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2025","dateComplaintFiled":"03/15/2026","vin":"3gtu9fel5lg","components":"ENGINE","summary":"Engine failure at 84000","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11724149,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/03/2026","dateComplaintFiled":"03/13/2026","vin":"1GTU9FEL1LZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"I was driving the truck on the freeway and the engine completely shut off with no warning. I pulled to the side of the shoulder and I could smell a burning smell. The truck wouldn\u2019t start back up or move in neutral. Towed it to a shop and they said it had a camshaft issue and a slight knocking noise when they got it to fire up only would run for a little then shut back off. Now I\u2019m having to replace the whole engine due to being bad with the cam code and knocking.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11723896,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/31/1969","dateComplaintFiled":"03/12/2026","vin":"1GTP8CED8LZ","components":"ELECTRICAL SYSTEM","summary":"The backup camera is too bright at night and therefore useless . Tried searching the web but found no fix that would actually work. Took my truck to the dealer and they never heard of this issue even though there are numerous articles about it on the world wide Web.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11723707,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/28/2026","dateComplaintFiled":"03/11/2026","vin":"3GTU9CED8LG","components":"ENGINE","summary":"February 28th 2026, I was driving on the highway with my children and suddenly without any prior warning my cars check engine light came on. It immediately starting losing power, made a knocking noise, and sounded like it was misfiring. Fortunately I was able to make it safely off the highway and have my car towed to the dealership. This was most definitely a life threatening situation which no one should have to face. The dealership dismantled my engine and i was advised the engine had an internal failure due to the valve lifter , rods , and camshaft damage. When looking online there are many complaints and lawsuits regarding this investigation of GMC\u2019s 5.3 engine. I believe this was due to catastrophic damage of the components and there needs to be a recall regarding this issue.  The car has always been properly serviced and regular oil changes.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11723067,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/27/2026","dateComplaintFiled":"03/09/2026","vin":"1GTU9CED3LZ","components":"ENGINE","summary":"While driving, my vehicle experienced a sudden and complete engine failure without any prior warning. There were no warning lights, dashboard alerts, or performance issues that would have indicated an impending mechanical problem. The failure occurred unexpectedly while I was actively driving on a public roadway.  After the incident, the vehicle was inspected and diagnosed by a licensed mechanic. The diagnosis determined that an internal engine lifter failed, which subsequently caused damage to the camshaft. This type of failure appears to be the result of an internal mechanical defect rather than any form of neglect or improper maintenance.  The abrupt nature of this engine failure created a serious safety hazard. The vehicle suddenly lost the ability to operate normally, forcing me to slow down and stop in active traffic. This unexpected loss of power placed my safety, as well as the safety of other motorists on the road, at significant risk. A critical engine component failing without warning while the vehicle is in operation raises serious concerns about reliability and safety.  The vehicle has been properly maintained throughout ownership. All routine maintenance and servicing have been performed by licensed mechanics, and I can provide complete maintenance records documenting this history. At no point prior to this incident were there any signs, warnings, or diagnostic alerts indicating an issue with the engine.  The vehicle has already been fully inspected and diagnosed by a licensed mechanic, and the findings are available for review. If necessary, arrangements can be made for the manufacturer or an authorized representative to inspect the vehicle and verify the damage.  Given the sudden nature of this failure, the internal engine damage involved, and the safety risk it created while driving, I am requesting that this issue be formally reviewed and addressed by the manufacturer.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722264,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/17/2026","dateComplaintFiled":"03/05/2026","vin":"3gtu9fel9lg","components":"STEERING,POWER TRAIN,ENGINE","summary":"Hi, was driving Vehicle GMC 1500 Denali, vehicle Lost power, all Lites lite up on Dashboard, Vehicle Just lost power and i swerved off Road and sideswiped a Plant Holder on side of Road, damaging side passenger Rear door. I bought the truck to GMC Rvc and they said vehicle Blew Cam shaft and Lifters. I explained to them I'm very concerned for others safety in these Vehicles with the 6.2 Engine. Someone is going to get Killed or even a family. I did look up this vehicle its not listed in Recall, but this vehicle has same engine as ones in Recall. Rvc Gmc issued me a bill for repairs for the amount of $8185.20 and they stated they took 3k off invoice. I did Pay total Invoice....I'm just asking you to please look into this as this is defiantly an issue and this year should be listed on Recall as well.. Thanku for at least looking at this. My cell is [XXX]  if you need to reach us...Thx.... INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11722311,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/04/2026","dateComplaintFiled":"03/05/2026","vin":"1GTU9FET9LZ","components":"SUSPENSION","summary":"My 2020 GMC Sierra Denali diesel with approximately 90,000 miles experienced two separate front suspension failures within a short period of time. The driver side tie rod and wheel hub failed first and required repair. Shortly after, the passenger side front suspension failed in a similar way and the vehicle had to be towed. These failures caused the front wheels to become unstable and created a serious safety concern while driving. Suspension components such as tie rods and hubs should not fail at this mileage under normal driving conditions.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11721569,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/04/2025","dateComplaintFiled":"03/02/2026","vin":"1GTP9EEL0LZ","components":"ENGINE","summary":"At 96,000 miles (3,000 miles after the extended warranty expired), I noticed the \"GM tick\" more prominent and had more of a metallic sound than it ever did.  Upon further investigation, it was found that a collapsed lifter may be the culprit.  The truck was brought to the dealer and it was confirmed that the #1 hydraulic lifter had collapsed and needed replacement.  This work was approved and tonight, I received a call from Rivard Buick GMC saying that the collapsed lifter also caused significant wear on the camshaft which also now requires replacement.  Loss of power on the road poses a significant risk as I carry my children in the vehicle.  No warning lamps, messages, or other indicators appeared before or when the issue occurred.  The issue was reproduced by the manufacturer/dealer.  The dealer Service Manager confirmed that this is extremely common with these trucks with the 6.2L engine and said it was a design flaw due to Dynamic Fuel Management, as well as the oil viscosity recommendation from GM being too low.  The year group before and after the 2020 has been recalled along with TSB's issued, however, this group is not part of it.  I contacted GM Customer Service (Case [XXX]) and was offered a 10% discount on the repair, being told that this is a \"great deal considering the vehicle is out of warranty\".  GM Customer Service has now resorted to not answering any further questions after several attempts to reach someone.  This is also after replacing the 10-speed transmission that was also not part of any recall but that was such an issue that the dealer was only able to source used transmissions rather than new parts.  Clearly GM won't make the right decisions to back their products or customers, so NHTSA intervention is necessary.  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11721474,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/10/2026","dateComplaintFiled":"03/02/2026","vin":"3GTU9DEL4LG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving approximately 40 MPH, the check engine warning light illuminated. The vehicle was taken to a dealer, where it was diagnosed, and determined that the oil pump solenoid needed to be replaced. The vehicle was repaired, but after the repair was performed, the engine seized. The manufacturer was notified of the failure. The failure mileage was approximately 45,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11721241,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2025","dateComplaintFiled":"03/01/2026","vin":"3GTP8BED2LG","components":"ENGINE","summary":"The motor went to knocking and lost power. Cost us about 3500. To fix. Lifters went down cam went down which caused major motor knock and loss of payer","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11720842,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/02/2026","dateComplaintFiled":"02/27/2026","vin":"3GTP8CET9LG","components":"POWER TRAIN","summary":"Vehicle is shifting hard when switching gears. Typical with the recall and the valve body being the issue. Dealership is saying it is not covered by recall.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11720886,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/25/2026","dateComplaintFiled":"02/27/2026","vin":"3GTU9DED0LG","components":"STEERING,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at various speeds, the steering wheel became stiff and difficult to steer to the left or the right. The power steering and check engine warning lights were illuminated. The vehicle was towed to a local dealer, where it was diagnosed with a corroded body ground strap. The error codes were cleared, and a test drive was performed. The vehicle was repaired out of pocket. Upon further investigation, the contact related the failure to the GMC Customer Satisfaction Program: N252515590; however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 37,061.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11720829,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/10/2024","dateComplaintFiled":"02/26/2026","vin":"1GTR9CED7LZ","components":"ENGINE","summary":"Misfiring due to DFM which is a common issue. Running a scan confirmed. I have installed a AFM/DFM disabler which seems to fix the issue.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11720059,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2026","dateComplaintFiled":"02/24/2026","vin":"3GTP9EEL6LG","components":"ENGINE","summary":"Have not had my truck in over a month while it\u2019s getting repaired had engine failure sure to faulty hydraulic lifters and camshaft failure due to the Dynamic fuel management system purchased warranty for my vehicle but this needs to be looked into it is unfair as a consumer that they are not doing anything about 2020 models and earlier they are just focusing on 2021 and up.   They almost had me crash my truck due to power loss","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719423,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/30/2026","dateComplaintFiled":"02/20/2026","vin":"3GTP9EEL9LG","components":"POWER TRAIN","summary":"On Friday, January 30, 2026 while driving our 2020 GMC Sierra 1500, we experienced sudden loss of power and the motor making a faint rattling noise.  The motor soon after began making a horrible sound - - it was obvious something was very wrong. This vehicle only had 31,995 miles on it at the of the issue. We had the truck towed to the dealer the following day for evaluation. Upon inspection, it was determined that the #5 lifter had collapsed and the left bank of lifters needed to be replaced at an estimated cost of $4500.  There were no warning lamps or alerts on our app for over 24 hours.  Once at the dealer, we explained to the service advisor that our research concluded that GM is fully aware of these issues and that they are under investigation for possible recall.  Our service advisor then made a call to GM who agreed to cover this repair under warranty (which we appreciate and feel was the right thing to do).  However, after additional research, we are concerned that the right bank of lifters will fail next, or even worse, catastrophic engine failure that GM will refuse to cover.  It is our understanding that NTSB is aware of these issues and is in the process of conducting an investigation. I would like to have our issue added to the investigation.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719463,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/20/2026","dateComplaintFiled":"02/20/2026","vin":"3GTP9EEL8LG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, there was a loud rattling sound coming from the engine. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with crankshaft failure. The contact was informed that the crankshaft could be replaced; however, the dealer suggested that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 44,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719487,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/20/2026","dateComplaintFiled":"02/20/2026","vin":"1GTP8DEDXLZ","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle unexpectedly sputtered. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with torque converter failure. The dealer determined that the torque converter needed to be replaced. The vehicle was repaired. The contact later stated that while driving at an undisclosed speed, the vehicle unexpectedly went into LIMP Mode. There was no warning light illuminated. On several occasions, the vehicle unexpectedly downshifted and lunged forward while stopped at a traffic light. There was no warning light illuminated during the failure. The dealer was contacted. The vehicle 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 97,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719518,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/18/2026","dateComplaintFiled":"02/20/2026","vin":"1GTR9CED4LZ","components":"SERVICE BRAKES,FORWARD COLLISION AVOIDANCE","summary":"The brakes suddenly activate and cause the vehicle to rapidly stop with no warning of any kind and without any braking action being taken by the driver.  Then, the brakes do not release and the vehicle cannot be moved as the brakes remain on.  Turning the engine off and then restarting it or shifting to other gears does not release the brakes. The vehicle remains immobile and cannot be driven.  After a few hours have passed, like overnight, the brakes release and the vehicle can started and driven just as if nothing had happened.  A message briefly appears on the vehicle information screen each time this inadvertent braking occurs.  It reads, \u201cBrake Failure System\u201d.  These brake lockdowns occurred when driving on streets and in the driveway.  No accident resulted but could have easily occurred.  This is dangerous for a driver and occupants of a vehicle with this safety flaw as well as for other people and vehicles in the vicinity.    This has happened five times.  The last two instances resulted in the vehicle being loaded onto a tow truck and taken to a dealer of the vehicle\u2019s manufacture. Thus far the dealership has not found what may be causing this intermittent braking problem.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11719037,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/01/2024","dateComplaintFiled":"02/19/2026","vin":"3GTU9DEL6LG","components":"ENGINE","summary":"I had a complete engine failure that I had to pay out-of-pocket for I really think that this vehicle should\u2019ve been included in the 2021 and beyond engine recall for 6.2 GMC Sierra\u2018s. I drove to work one morning Fein after work I turned my vehicle on, and the engine started shaking violently and smoke coming out of my exhaust like I\u2019ve never seen it before dealer said engine was completely blown and had to be repaired again I paid for this out of my own pocket. It is now coming to my attention that this vehicle is being looked at as an engineering analysis in line with the recall for the 2021 in above GMC Sierra\u2018s what do I need to do?","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11718471,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2026","dateComplaintFiled":"02/17/2026","vin":"3GTP9EEL9LG","components":"POWER TRAIN,ENGINE","summary":"My engine is projecting a ticking sound. Oil consumption is extreme.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11718207,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/28/2026","dateComplaintFiled":"02/16/2026","vin":"3gtp9eel3lg","components":"ENGINE","summary":"Engine failure as related to RQ26-001.  engine misfires after following recommended maintenance schedule for 6.2L engine.   Vehicle is at dealership and available for inspection and dealer is recommending engine replacement.  Engine light came on and was brought to GMC dealership same day.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11718047,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/26/2026","dateComplaintFiled":"02/14/2026","vin":"1GTP9EEL0LZ","components":"ENGINE","summary":"Catastrophic engine failure at 62,445 miles. Dealer state excessive oil in cylinder 7, ring failure. Recommendations; remove and replace engine.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11717405,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/10/2026","dateComplaintFiled":"02/11/2026","vin":"3GTU9FED7LG","components":"SUSPENSION","summary":"I am writing to formally express my dissatisfaction regarding a significant safety and reliability issue with my 2020 GMC Denali. Specifically, the vehicle is experiencing premature wear and imminent failure of the front ball joints. I expect the suspension components of a premium Denali-trim vehicle to last significantly longer than the 37,061 miles currently on my odometer. Industry standards typically place the lifespan of these components between 70,000 and 150,000 miles.  Technical Details of the Failure: The vehicle is currently exhibiting the following symptoms of accelerated ball joint degradation: \u2022Excessive Vertical and Lateral Play: Inspection reveals play in the right lower ball joint that exceeds the manufacturer\u2019s maximum allowable wear specifications. The left lower Ball Joint is starting to have a small amount of play, according to the technician","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11716407,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/08/2025","dateComplaintFiled":"02/07/2026","vin":"3GTU9DEL3LG","components":"POWER TRAIN","summary":"My 2020 GMC Sierra 1500 experienced a premature transmission failure consistent with GM\u2019s known 8-speed transmission defect. My safety and the safety of others were put at risk if/when the transmission occurs a temporary lockup which can/will cause the vehicle to stall on the highway, and potentially create a minor/major automobile incident if vehicle stalls.  The vehicle was taken to dealership Capital Chevrolet Montgomery, AL where dealership technician diagnosed/confirmed the issue along with pictures of internal transmission failed components as well as recommended resolution for fix.  The vehicle has been inspected by my out-of-pocket expense extended warranty company Endurance Warranty Services sub-contracted repair claims adjuster.  No warning lamps, vehicle messages, or other symptoms of the problem prior to the failure were noticeable; the vehicle had multiple diagnostic scans prior to original sale and after sale to present no issues or trouble scans.  the first issue appeared or was noticeable 12/08/2025.  GM has refused action by asserting warranty expiration despite widespread knowledge of this defect. The vehicle has been out of service since December 8, 2025.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11716131,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/23/2026","dateComplaintFiled":"02/06/2026","vin":"3GTP9EEL9LG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the engine made an abnormal popping and crackling sound. The traction control, check engine, and several other unknown warning lights were illuminated. The message \"Service Emergency Brake\" was displayed. The engine later made knocking sounds, and the vehicle vibrated while driving. The vehicle was towed to an independent mechanic, who determined that the engine 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 year and VIN were not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 138,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11716354,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/16/2025","dateComplaintFiled":"02/06/2026","vin":"3GTP9EEL0LG","components":"ENGINE","summary":"I purchased my 2020 gmc sierra 1500 6.2L in September 2024 with 80,000 miles. 9 months later the lifters gave out. Had them replaced and 6 months later, the lifters again were bad and was knocking. They are now replacing the lifters and cam. I am so disappointed that this is happening. I hear that the 2019 and 2020 was not included in this recall! Why not!! If it\u2019s still doing the same thing and it is the same engine, why isn\u2019t my truck in this recall?   I would like to know why? If it is doing the same thing as the recall, shouldn\u2019t it be covered by this recall?  Best,   [XXX]  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11714982,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/01/2026","dateComplaintFiled":"02/02/2026","vin":"3GTP9EEL5LG","components":"ENGINE AND ENGINE COOLING,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed and hauling a boat, the vehicle shook violently and made a loud banging sound. The vehicle failed to accelerate above 40 MPH. The check engine warning light was illuminated. The vehicle was towed to the dealer, and it was determined that there was a misfire in cylinder #6, and that the engine required further inspection. The vehicle was not repaired. The contact related the failure to NHTSA Action Number: EA25007 (Engine, Engine and Engine Cooling). The manufacturer was not made aware of the failure. The failure mileage was approximately 87,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712976,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/11/2025","dateComplaintFiled":"01/23/2026","vin":"1GTU9FEL0LZ","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER,VISIBILITY/WIPER","summary":"Back window leaks down onto electrical compents and causes mold behind rear seat, plus staining mold on headliner","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712072,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/16/2026","dateComplaintFiled":"01/20/2026","vin":"1GTP9EEL6LZ","components":"ENGINE","summary":"The bearings in my engine failed while on the road! The dealer says I need a full engine replacement for $16,000. There were no warnings or indication there was a problem. The vehicle has been maintained perfectly since it\u2019s purchase.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712108,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/13/2025","dateComplaintFiled":"01/20/2026","vin":"1GTU9FEL3LZ","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the engine seized. No warning lights were illuminated. The contact disabled the stop-to-start feature, and the failure ceased. The vehicle was taken to the dealer, and the contact was informed that the repair was not covered under recall. In addition, the contact was informed that the vehicle needed to remain with the dealer for two weeks while performing diagnostic tests on the vehicle. The contact was unable to be without a vehicle for two weeks. The vehicle was the only means of transportation. The contact stated that the failure was a known failure with the vehicle and that the manufacturer needed to repair the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The contact was informed that the repair was not covered under the recall. The contact was advised to take the vehicle to the dealer for a diagnostic test. The failure mileage was approximately 123,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712281,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/26/2025","dateComplaintFiled":"01/20/2026","vin":"1GTP9EEL7LZ","components":"ENGINE","summary":"Truck started to vibrate and loud tick sound, CEL for misfire and traction control. Hard shifting until I could pull to a safe area to call for a tow. Around 76k miles on the truck when it happened.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712282,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/08/2025","dateComplaintFiled":"01/20/2026","vin":"1GTP9EEL7LZ","components":"ENGINE","summary":"While accelerating on the highway the truck started to vibrate along with a loud tick, CEL came on for misfire and traction control, hard shifting to where I could park at a safe area to wait for a tow. Kids in the car with me 90 plus degree day on the side of the highway.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11712284,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/03/2025","dateComplaintFiled":"01/20/2026","vin":"1GTP9EEL7LZ","components":"ENGINE","summary":"When driving at about 30 mph the truck randomly shut off and would not start or try to start. I was later told the engine crankshaft rod bearings seized.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11711908,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/12/2026","dateComplaintFiled":"01/19/2026","vin":"3GTU9CED6LG","components":"UNKNOWN OR OTHER","summary":"Transmission 10l80 stuck solenoid  truck has hesitation delayed shifting. And will not shift after certain gears.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11711427,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/14/2026","dateComplaintFiled":"01/16/2026","vin":"3GTU9FEL5LG","components":"ENGINE","summary":"Sudden engine issue. Knocking, power loss, brake and steering warnings. Severely damaged engine. Mechanic says 2 cylinders are irreparably damaged and entire engine must be replaced","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11711189,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/11/2026","dateComplaintFiled":"01/15/2026","vin":"1GTP9EEL9LZ","components":"ENGINE","summary":"Driving to the lake on the highway towing a trailer, a loud tapping noise started followed by vibration. Engine seems to have lost power during acceleration.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11711022,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2026","dateComplaintFiled":"01/14/2026","vin":"3GTU9CED6LG","components":"UNKNOWN OR OTHER,ENGINE","summary":"My 2020 gmc sierra has had poor gas mileage  problems i have taken it to gm a few times with them not able to dind anything wrong through diagnostic. A couple years later my horrible gas mileage came back and service ecs and stabilitrack message came back on and disappeared. I spoke to another shop  and they advised me its the dfm lifter issues that everyone has been  talking about. So the shop performed the well know fix and has fix the issue. A month after  now the valve body gave me a p2817 code showing that the solenoid is stuck in the off  and was also advised that this is a know issue being addressed. Currently the truck is in the shop. When is enough enough with all the issues across the nation  whwn is gm going to make it right","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11709924,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/06/2026","dateComplaintFiled":"01/09/2026","vin":"3GTU9CET7LG","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while his wife was driving at an undisclosed speed, the vehicle jerked violently. The driver stated that the vehicle failed to respond as intended while depressing the accelerator or brake pedal. The check engine warning light was illuminated. The driver was able to pull over to the side of the road. The vehicle stopped jerking while driving but failed to exceed 30 MPH. The driver pulled into a parking lot and parked the vehicle. The contact was made aware of the failure and went to the parking lot. The vehicle was restarted and jerked abnormally. Additionally, while shifted into reverse(R), the vehicle failed to function as intended. The vehicle was taken to the dealer, where it was diagnosed, and two DTC were retrieved for unknown transmission software failure, and it was determined an unknown part in the transmission had failed. The dealer informed the contact that an unstated recall was closed. The vehicle remained at the dealer unrepaired. The manufacturer was made aware of the failure, a claim was filed, and the contact was informed that the recall was closed. The failure mileage was approximately 146,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11709935,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2025","dateComplaintFiled":"01/09/2026","vin":"1GTU9FEL6LZ","components":"ENGINE","summary":"MY 2020 GMC SIERRA DENALI EXPERIENCED A COMPLETE ENGINE FAILURE in June of 2024.  Dealer repair was in excess of $7,700.00.  They stated they knew this was going to happen at about the 70,000 mile mark as they have fixed many in that same time.  Repair resulted in rod replacement and cam shaft damage and replacement.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11709671,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/05/2026","dateComplaintFiled":"01/08/2026","vin":"1GTU9AEF1LZ","components":"POWER TRAIN","summary":"I was driving my vehicle on the highway when the transmission suddenly gave out with no warning whatsoever. When I say gave out, I mean, it just completely stopped working and was unable to go into any gear. I was luckily able to coast over to the median without an accident occurring, but it was not without much concern or worry as traffic moving on the highway is 70 miles an hour plus and quite full of vehicles .I consider myself lucky that I have extensive driving experience and was able to conduct myself calmly under the circumstances. It was a bit tricky, getting situated though under those circumstances. There was no advanced warning in anyway. no engine lights, no sounds ,nothing. This is a well maintained vehicle. All my service is done by the dealership, and I have never been given any indication that there was something wrong. However,After this happened, I have been researching and found that many of these vehicles with this transmission continue to have this problem. This is not normal wear and tear or normal mechanical failure. I have owned many vehicles and never felt as unsafe as I did in that moment, or had a vehicles transmission fail so abruptly.For me, and the research I have done, I can only hypothesize the materials and engineering involved with this transmission are inherently inferior, completely faulty, and a safety risk/hazard to anyone who owns or operates the vehicle. I consider myself lucky to walk away unscathed, other than the economic price that it is going to incur on my finances for repairs.I would hope that it doesn\u2019t take something serious to happen before someone takes action and conducts a recall of this product. From what I have read and what I have experienced, this is truly an unfortunate accident waiting to happen and it appears nothing is being done. I truly hope that you could take a little more look into this matter. Thank you for your time and energy. I have already contacted the manufacturer and felt ignored.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11709134,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2025","dateComplaintFiled":"01/06/2026","vin":"1GTR9CED3LZ","components":"POWER TRAIN,ENGINE","summary":"My 2020 GMC Sierra with a 5.3L engine and 78,272 miles on the vehicle,  experienced damaged lifters which also resulted in a damaged cam shaft. The total repair bill was $9,208.86. While in the GMC dealership for repair, there were 2 other trucks - same model, same year, same engine - in for the same repair. When searching on-line, I found the recall for the GMC 6.2L engine for similar issues. It is my opinion that the 5.3L engine is experiencing the same types of issues. I have driven GMC trucks for almost 40 years and have never experienced these types of issues. I have been told by several people that it is related to the Dynamic Fuel Management system and to fix the problem to disable the system to keep the truck in V8 mode. There are several solutions on line to make this happen. I am no engineer and only provide this as background information. From my perspective, it is clear that GM has a problem (whatever the root cause) with their 5.3L engines.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708412,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/23/2025","dateComplaintFiled":"01/02/2026","vin":"1GTU9FEL7LZ","components":"ENGINE","summary":"We were driving down the interstate at about 75 mph when a message came up that said to shift to neutral and push the start button. My husband did and it continued to drive perfectly fine, but about 6 miles down the road it did the same thing again except when he pushed the start button it did not start. I cannot begin to tell you the cause as to why it would\u2019ve been doing that as I have never had any other issues with it.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11708245,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/01/2026","dateComplaintFiled":"01/01/2026","vin":"3GTP9EEL6LG","components":"ENGINE","summary":"Bought the truck less than four months ago and as of yesterday it consumed a substantial quantity of oil and later refill. However today it made a noticeable noise until it shut off permanently. Dealer did not disclose this","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11707106,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/17/2025","dateComplaintFiled":"12/26/2025","vin":"1gtp9eel0lz","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"I started to notice changes in performance around 75k miles. Seemed like performance was subpar compared to what was the norm. Seemed to lose some power. Minimal at first, more so just recently around 90k. Oil consumption was starting to accelerate at each oil change at 75k, 80k, 85k, 90k. To the point around 85k and 90k that I would not go over even 1 mile from the 5k threshold without changing the oil.   Around 90k I could tell it was not getting any better, deficiencies were accelerating it seemed. At 91k miles I started to hear clicking noises and loss of power, starts were getting rough, bouncing at idle. I stopped driving it, only driving it to the dealership where I brought for a look at it. Will be driving it again for them to do a deeper diagnostic. Many misfires at cylinder 5. PO305 the issue. Showed up around 91k miles on 12/17/25  Now investigation into my model. I see online.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11706196,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/19/2024","dateComplaintFiled":"12/19/2025","vin":"1GTU9EET3LZ","components":"ENGINE AND ENGINE COOLING,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving approximately 35 MPH, the vehicle lost automotive power with the check engine warning light illuminated and the message \"Vehicle Might Lose Power\" displayed. The vehicle remained at the residence, and the contact used a self-diagnostic tool to retrieve a fault code related to the coolant valve D. The contact determined that the coolant valve D needed to be replaced. The vehicle was taken to an independent mechanic; however, the contact was unaware of the part that needed to be fixed in the vehicle. The vehicle was repaired. The contact researched and was made aware of an unknown NHTSA Campaign Number; however, the VIN was not under recall. The manufacturer was contacted and confirmed that the VIN was not under recall. The failure mileage was approximately 31,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11705821,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/27/2025","dateComplaintFiled":"12/18/2025","vin":"3gtu9ced5lg","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Fuel management system caused a lifter to fail (stuck) which resulted in camshaft damage at 77,611 miles. GM refused to cover the repair, although there is a pending class action lawsuit against GM for this very issue. Truck was repaired at a GM dealership - Sunrise Collierville, TN. Repair costs was approximately $7,000. This occurred during a 2.5 hour road trip which put lives at risk. The truck began to vibrate, and the check engine light came on. There was no other warning before the failure occurred. No police or insurance were involved. This occurred on 9/27/25. It took the dealership 32 days to diagnose and repair the issue. Thanks.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11705162,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/14/2025","dateComplaintFiled":"12/15/2025","vin":"3GTU9DELXLG","components":"POWER TRAIN","summary":"While driving on the interstate at 70 mph, the transmission began to shudder. It continued the duration of the trip of 90 mins. Following day, the transmission is continuing to shudder and is now shifting hard.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11704848,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/12/2025","dateComplaintFiled":"12/13/2025","vin":"3GTP9EED6LG","components":"ELECTRICAL SYSTEM,VISIBILITY/WIPER","summary":"The morning of December 12th, 2025 I used my vehicle to transport my daughter approximately 5 miles round trip from our home to drop her off at daycare and then I returned home. I used my front and rear defrost elements to expedite removal of heavy condensation which had formed on all windows overnight. This was approximately 7 AM. I parked my truck in the driveway and went inside until approximately 11:45 AM when I went to leave in my truck and noticed the rear sliding window had shattered. The window shattered and distributed tempered glass fragments all over the inside of the cab. Only approximately 10% of the window remained intact. I then reviewed the security camera footage from my driveway and discovered that the window failed entirely on its own with nothing hitting/striking/touching the window, nor any humans or animals in the vicinity.   I attempted to take the vehicle to a GMC service department this morning (Dec 13) but due to their demand to keep the vehicle for 2-3 days to investigate yet unable to provide a loaner vehicle, I was unable to leave the vehicle in their possession and returned home. I plan to continue to contact GMC dealership service departments in hope I can find one which can provide a loaner vehicle, as I will need transportation to and from work in the coming days.  I do have video footage of the incident although I am unable to add it below.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703703,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/08/2023","dateComplaintFiled":"12/08/2025","vin":"3GTU9DEL2LG","components":"ENGINE","summary":"In December of 2023 my 2020 GMC Sierra 1500 was driving down the freeway, experienced a jerking and low oil pressure. Pulled over and shut vehicle off and wouldn't turn back on, engine locked up. The vehicle received a brand new 6.2l replacement motor in April of 2024- $15k in parts and labor. This vehicle was not included in the recent recall, but obviously experienced a similar issue. This was at 75k miles. The car was owned by a different owner at the time of the engine failure. I bought the vehicle as a repo and proceeded to get the engine fixed on it.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703774,"manufacturer":"General Motors, LLC","crash":false,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/08/2022","dateComplaintFiled":"12/08/2025","vin":"3GTP9CEK9LG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"The contact owned a 2020 GMC Sierra 1500. The contact stated that after the vehicle was purchased and while driving at an undisclosed speed, the check engine warning light illuminated. The dealer was contacted. However, the check engine light turned off, and the dealer refused to inspect the vehicle. The contact stated that while driving at an undisclosed speed, the vehicle jerked and the check engine light illuminated. The dealer was contacted. However, the warranty had expired, and the dealer refused to inspect the vehicle. The manufacturer was contacted, and the contact was offered a five-hundred-dollar coupon. The vehicle was taken back to the dealer. However, no cause for the failure was found. The contact stated that an unknown part was replaced. The contact stated that the failure persisted. The contact stated that while turning on the engine, the contact's sister informed him that smoke was emitting from under the hood. The contact turned off the engine, opened the hood, and noticed that all of the wires were melted. The contact splashed water on the wires. The contact checked underneath the vehicle and noticed that the plastic that was burnt was leaking residue. The vehicle was left at the residence where the contact's mother lives. The next day, the contact noticed that the front windshield had shattered due to the heat from the burnt wires. The insurance company was notified and referred the caller to take the vehicle to be inspected. The vehicle was towed to a collision center. The contact was informed that the vehicle had a factory defect. The vehicle was not repaired. The manufacturer was notified of the failure. However, no assistance was provided since the warranty had expired. \u00a0The failure mileage was approximately 32,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703500,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/12/2025","dateComplaintFiled":"12/07/2025","vin":"3GTP9EEL3LG","components":"ENGINE","summary":"Engine lost all power while driving highway speed. Vehicle towed to Cavender Chevrolet dealer in Boerne, TX. Dealer inspected and determined cam bearings damaged. Engine replaced with remanufactured engine.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11703015,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/09/2025","dateComplaintFiled":"12/04/2025","vin":"1GTP9EED0LZ","components":"POWER TRAIN,ENGINE","summary":"MY 2020 5.3 L GMC AT4 IS EXPERIENCING LOSS OF POWER WITH BUCKING & STALLING. CYLINDERS ARE NOT ACTIVATING WHEN CALLED CHECK ENGINE LIGHT IS FLASHING, IT STARTS ROUGH AND MAKES NUMEROUS NOISES AT VARIOUS SPEEDS, AS WELL AS AT IDLE. SO I BROUGHT MY VEHICLE TO MY LOCAL AUTO REPAIR SHOP.  OUR MECHANIC FOUND TWO FAILED FUEL INJECTORS AND A FAILED THROTTLE BODY.  THEN THE LOUD KNOCKS IN MY BLOCK FAILED AN ACOUSTIC TEST. HE ALSO DETERMINED THE LIFTERS, PUSH RODS AND CAMSHAFT ARE EXPERIENCING EXCESSIVE WEAR. THE AFM SYSTEM HAS FAILED!  HE WARNED ME THAT FURTHER USE OF MY MOTOR (WITH ONLY 42K MILES ON IT) WILL CAUSE A CATASTROPHIC FAILURE.  MY RESEARCH SHOWS THAT THESE ISSUES ARE BECOMING COMMON OF 5.3 GMC MOTORS. WE SEARCHED THE COUNTRY FOR A REBUILT MOTOR AND FOUND THAT NONE ARE AVAILABLE FOR THE NEXT SEVERAL MONTHS. HOWEVER, I WAS ABLE TO FIND A NEW MOTOR AT MUCH GREATER COST. GMC HAS DECLINED ASSISTANCE AT THIS TIME.   MY VEHICLE HAS NO VALUE AS IS, SO I ORDERED THE NEW GM ENGINE. WITHOUT THE DOD SYSTEM, THESE ENGINES WERE DESIGNED TO GO WELL OVER 100,000 MILES. I AM A FAITHFUL GMC OWNER AND NONE OF MY PREVIOUS GMC TRUCKS (2003, 2013, 2015, 2019) HAD SUCH A MAJOR PROBLEM. NOW THE 2020'S FUEL SAVING SYSTEM HAS FAILED AND REQUIRES REPAIRS THAT AMOUNT TO HALF THE VALUE OF MY TRUCK.   WHEN A FULL SIZE TRUCK STALLS ON THE HIGHWAY IT'S CERTAINLY LIFE THREATENING.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11702228,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/30/2025","dateComplaintFiled":"12/01/2025","vin":"3GTP9EEL4LG","components":"ENGINE","summary":"Driving on the Highway, the engine shuttered, but kept going.  When I had to slow down, the engine stalled and would not restart.  It left me in the center lane of a three lane highway. I was able to push the vehicle off to the side of the road.  Very dangerous.  No warning lights came on, no alerts.  I had the truck towed to Folsom Buick & GMC in Folsom CA where the diagnosed a complete engine failure.  The have now had my truck for a full month.  They are trying to get GMC to share the cost of the replacement motor. In the meantime, I'm renting a pickup truck so I can continue to work.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11702341,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/15/2025","dateComplaintFiled":"12/01/2025","vin":"3GTP9EEL1LG","components":"POWER TRAIN,ENGINE","summary":"Ticking noise coming from engine slight metallic noise as well. RPMs drop and when they drop, you can feel power loss constant hunting in the RPMs. Also a weird vibration, not all the time in the front end somewhere.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11701487,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/15/2025","dateComplaintFiled":"11/25/2025","vin":"1GTU9FEL3LZ","components":"SERVICE BRAKES, HYDRAULIC,ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 45-50 MPH, the check engine warning light and the brake warning light illuminated. Additionally, the contact heard an abnormal sound coming from the engine, and the vehicle decelerated. The vehicle was taken to the dealer, where it was diagnosed and determined that all the engine lifters and the camshaft needed to be replaced. The vehicle was repaired. The contact related the failure to NHTSA Action Number: EA25007 (Engine and Engine Cooling). The manufacturer was notified of the failure and informed the contact that the VIN was not under recall. The manufacturer offered to partially cover the cost of the repair. The failure mileage was 107,787.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11701589,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/13/2023","dateComplaintFiled":"11/25/2025","vin":"3GTP9EELXLG","components":"POWER TRAIN,ENGINE","summary":"-lifter failure on 6.2 v8 engine, causing damage to camshaft -lost significant propulsion while driving on the highway, nearly avoided being rear-ended by another vehicle due to loss of vehicle propulsion -dealer had to to replace lifter bank and camshaft -no issues, once lifter failed dash lights all lit up","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11701366,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/24/2025","dateComplaintFiled":"11/24/2025","vin":"3GTU9EET2LG","components":"ENGINE","summary":"Engine fan has been constantly running, with engine temp reading around 230 consistently. After driving 5 miles on the interstate it shot up to 260 and said \u201cengine temp overheating, idle engine\u201d.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700944,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2023","dateComplaintFiled":"11/22/2025","vin":"3GTU9DEL6LG","components":"ENGINE","summary":"I am Having direct issues with the engine when the vehicle is started and continues while idling or driving at any rate of speed.There's a continuous \"Knocking\" noise that has concerned me for a while now. My vehicle (2020 GMC Sierra 6.2 liter gas engine) with almost 100,000 miles has been doing this for a while now (at approximately 50,000 miles) and (was documented at the dealership when I made a complaint which included what I considered the vehicle to be using/losing more \"oil consumption\" than the normal 3-4 quarts between oil change) dating back to 2022 0r 2023 when I was told by the dealership that the amount of oil being used/ lost still fit within the manufacturers specifications.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700611,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/12/2025","dateComplaintFiled":"11/20/2025","vin":"3GTU9FEL4LG","components":"POWER TRAIN","summary":"My truck had engine failure while at the dealership getting new tires installed on 11/12/2025. When they started my truck they detected major knocking in my engine the 1st thing in the morning. It unsafe to drive they're telling me my engine needs to be replaced. My engine has 58,000 miles on it. There was no issues with my truck when I drop it off.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700257,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/16/2025","dateComplaintFiled":"11/19/2025","vin":"3GTU9FEL0LG","components":"ENGINE","summary":"My 2020 GMC Sierra 1500 Denali with the 6.2L L87 V8 just began experiencing a new rough idle with intermittent RPM dips. There are no engine codes or warning lights. Idle drops are noticeable, suddenly began this week. I am concerned due to ongoing NHTSA Engineering Analysis EA25-007 involving this engine. Some owners reported engine failure with little warning.   The truck has right over 68,000 miles on it and has had every oil changed performed at a GM dealer. I have had to top off the oil between cycles and always used the recommended oil, being the Dexos Gen 3 due to the truck burning a small amount of oil.   More detail on a possible cause. I believe it would be worth investigating the DFM technology. I will be performing a fuel cleaner and possibly a lifter cleaner and/or additive. I would like to tune the truck and turn off the DFM since this is what I have read causes the truck to burn oil and damage the lifters. However, I will wait until this Analysis is completed before deciding to change the truck's stock tunes.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700312,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/15/2025","dateComplaintFiled":"11/19/2025","vin":"1GTU9FEL1LZ","components":"ENGINE","summary":"The engine failed and started burning oil at a rate of 3 quarts every two weeks. The vehicle is currently at the GMC dealership having the engine rebuilt at a cost of over 15,000. The vehicle has approx. 116,000 miles at time of failure, so it is outside of the manufacturers warranty. The GMC dealership (Fred Anderson Greer) has photos. The engine is a 6.2L but not currently under recall as it is a 2020, the recall includes 2021 - 2024 models.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11700403,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/19/2025","dateComplaintFiled":"11/19/2025","vin":"3GTU9DED8LG","components":"UNKNOWN OR OTHER","summary":"Safety Recall N242454440 Momentary Rear Wheel Lock-Up was issued for 2020 to 2022 GMC Sierra 1500 but mine is not included. I drive a 2020 GMC Sierra 1500.  It is experiencing harsh shifting and now there is a feeling in the rear wheels like they are trying to get stuck or hang up.  Why is my truck not included?","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699863,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2025","dateComplaintFiled":"11/17/2025","vin":"3GTP9EELXLG","components":"ENGINE","summary":"This is the 3rd catastrophic engine failure since purchasing this new vehicle from the dealership, the vehicle is currently at the dealership and is available for inspection. The latest diagnostic report has been attached from the dealership for reference. My safety and the safety of others was at risk with each occurrence. The 1st occurred on the interstate when a lifter rod bent causing loss of power with no warning, engine was rebuilt by the dealership. The 2nd occurred on the interstate when a different lifter rod bent causing loss of power with no warning, engine was rebuilt again by the dealership. The 3rd occurred just recently while on a highway. The engine suddenly turned off with no warning. The dash told me to put it into neutral and start again. I had to coast the truck for a long distance after the sudden loss of power in order to attempt to restart the engine. The engine would not start. The diagnostic report from the dealership states \"engine is seized tight, maxi fuse is blown, needs engine replacement.\"","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699884,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/27/2025","dateComplaintFiled":"11/17/2025","vin":"3GTU9FEL9LG","components":"ENGINE","summary":"My engine is currently being torn down at the dealership.I heard a ticking noise coming from my engine so I took to the dealership I bought it from and when they did their diagnostics and inspection they said it was a connecting rod bearing failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11699612,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/08/2025","dateComplaintFiled":"11/15/2025","vin":"1GTU9FEL7LZ","components":"POWER TRAIN,SERVICE BRAKES,ENGINE","summary":"First my torque converter went out, no warning lights only shaking wehn shifting, I got it replaced already it cost me 2400 Second Warning light service for Brakes, Traction and power steering come on and off. And sometimes truck doesn't brake well and steering wheel feels hard to drive, it has happened while on expressway with family. Third Engine oil low Add oil warning sign comes up alot and I have to add oil, engine has a rough idle now, also when I turn truck on smoke comes out while having a rough idle, recently it started knocking, I haven't moved the truck since than","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11698923,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/17/2024","dateComplaintFiled":"11/12/2025","vin":"1GTR9CED2LZ","components":"ENGINE","summary":"This is a report on an incident that happened a year ago.  Vehicle was taken to GMC dealer who replaced the engine at our expense. Seems to be consistent with the problem on newer GMC's that have been covered by a recall.  This 2020 is one of three GMC's owned by our company. This expense was in the $12,000 range.  (The 2019 experienced similar issues in 2022 and the expense was $2800 ish, and in 2024 another $1200 ish. )  Dash lit up like a Christmas tree, all warning lights on. Stalled, barely moved.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11698523,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/12/2023","dateComplaintFiled":"11/10/2025","vin":"3GTU9DEL1LG","components":"ENGINE","summary":"Engine ticking especially when cold, dealership claims they fixed it while it was under warranty but it has continued to do it.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11698575,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/06/2025","dateComplaintFiled":"11/10/2025","vin":"3GTU9BETXLG","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM","summary":"1. The vehicle\u2019s emissions system is malfunctioning, specifically the ECM (Engine Control Module) related to the exhaust emissions system. The diagnostic trouble code is P2C7A, indicating the system is not performing as expected. Key components such as the NOx catalytic converters and diesel particulate filter have been repeatedly replaced, but the issue persists. The vehicle and all replaced components are available for inspection upon request. 2. The malfunctioning emissions system has led to an exhaust leak that allowed exhaust gases to enter the vehicle\u2019s cab. This creates a hazardous environment for both the driver and passengers, exposing them to harmful exhaust fumes. In addition to reduced engine performance, poorer fuel economy, and emissions non-compliance, this exhaust leak poses a serious safety risk by compromising the air quality inside the vehicle. Prolonged operation under these conditions could lead to adverse health effects and further mechanical failures that impact vehicle safety. 3. Yes. The dealership has diagnosed the problem multiple times. The emissions components have been replaced under warranty on two separate occasions. The dealer attributed the fault to fuel quality; however, Fuel distributor debunked these claims. 4. The vehicle has been inspected extensively by the dealership with invoiced repair work replacing key emissions control components. 5. The check engine light and Service Engine Soon (SES) light have been illuminated with the diagnostic code P2C7A since the initial identification of the problem which started 3JUN24","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11698208,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2022","dateComplaintFiled":"11/07/2025","vin":"3GTU9DELXLG","components":"ENGINE","summary":"At approximately 54,000 miles had a complete engine failure.  Lifter blew apart and damaged crank shaft.  Complete engine rebuild.  Rebuilt in approximately 3 weeks. 2022 At approximately 138,000 miles had another complete engine failure. Lifter blew apart again,  Entire engine was replaced.  New engine took 10 weeks to get.  Installed in 2 days after recieved. 2025 No symptoms or warning lights present prior to failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11697915,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/06/2025","dateComplaintFiled":"11/06/2025","vin":"3GTP9EEL6LG","components":"ENGINE","summary":"Engine knock, loss of power, engine failure warning, ticking","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11697543,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/06/2025","dateComplaintFiled":"11/05/2025","vin":"3GTU9DET7LG","components":"POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM","summary":"Coolant control valve and engine cooling fan","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11697489,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/22/2025","dateComplaintFiled":"11/04/2025","vin":"3GTP9EEL3LG","components":"ENGINE","summary":"While driving at highway speed and attempting to pass another vehicle, I experienced an engine failure; loss of power, noise from engine, and numerous warning messages on the display.  At the GM dealer, I was informed that a pushrod (cylinder #2) was bent, the source of the engine noise.  Upon further inspection (removal of cylinder heads), it was determined that the cam shaft chrome had begun to flake causing pitting (lobe damage) which in turn caused the pushrod to fail.  Had the pushrod broke instead of bent at highway speed, I feel there would have been a catastrophic failure with more severe consequences for my vehicle and others around me.  Vehicle was diagnosed and repaired by a certified GM dealer.  There were no prior warnings/indications of problem(s).  I understand there is a current recall of the GM 6.2L L87 engine for model years 2021-2024.  This incident occurred on a model year 2020 GM 6.2L L87, but the issues I experienced are identical to the 2021-2024 engines identified in the recall.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11697009,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/31/2025","dateComplaintFiled":"11/02/2025","vin":"1GTP9EEL3LZ","components":"ENGINE","summary":"I experienced lifter and camshaft failure on my 2020 GMC Sierra equipped with the 6.2L V8 engine at approximately 72,000 km. GMC denied warranty coverage as my factory warranty had expired only four months earlier. The repair cost me nearly $10,000 out of pocket.  My vehicle has been meticulously maintained with regular oil changes performed at my local GMC dealer every 5,000 km, and it has always been fueled with premium gasoline as recommended by the manufacturer. The engine failure was sudden and unexpected.  All lifters and the camshaft were replaced during the repair. Since the repair, I have noticed intermittent RPM fluctuation under light load conditions. I am currently working with my dealer to diagnose whether this issue is related to the recent engine repair or a transmission flush that was performed at the same time.  I am extremely disappointed in GMC\u2019s handling of this situation. Despite this being a well-documented issue with the 6.2L engine, I received no goodwill assistance or warranty consideration from GMC. While my dealer provided a partial discount on parts and labor, I was still responsible for nearly the entire repair cost. I hope GMC and NHTSA will review this matter closely, as owners should not be facing such expensive failures on well-maintained vehicles with this engine.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11696921,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/14/2025","dateComplaintFiled":"11/01/2025","vin":"1GTP9EEL5LZ","components":"ENGINE","summary":"A lifter in my cylinder is bad and damage to my cam shaft. This truck also has the 6.2L engine that was recalled for other GMC Vehicles.My safety was put at risk as I was driving it and it started smoking. I have had 2 different mechanics look at it. One mechanic was an independent business, the other was a certified GMC dealer. There was no warning lamps or messages.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11696307,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/28/2021","dateComplaintFiled":"10/29/2025","vin":"3GTP9EEL6LG","components":"ENGINE","summary":"Rod bearings spun and engine locked up while driving 70mph on the freeway. I was in traffic, and had to work my way over and off to the shoulder of the road. The engine was diagnosed and replaced by Hiley GMC at a cost of nearly $5,000 out of my pocket.   This was at approximately 63,000 miles.  Just out of warranty.  No loaner vehicle provided.  I was without my truck for 2 months. There were no warnings at all.  No lights or noises of any kind.  Rod bearings spun again on the replacement engine approximately 35,000 mile later.   It happened same as before.  Driving on the freeway at 70mph, and the engine seized.  No power steering, no warning noises or lights.  I had to coast across lanes through traffic and onto the shoulder. Diagnosed and replaced by Jerry's GMC.  They replaced the motor at no charge except I had to provide the new radiator because it was on backorder.  They had the truck for over 3 months and I had no loaner vehicle.  With approximately 65,000 miles on the latest engine, a lifter went out.  I put it in the shop to have all the lifters replaced, and motor mounts replaced at a cost of $6500.  Upon taking the truck for a test drive, the engine seized in traffic under an overpass and blocked one lane of traffic. The shop dropped the oil pan to check it out, and, lo and behold, this engine has spun rod bearings again.  There is definitely a serious and dangerous problem with the L87 6.2L. Being a 2020, it is not currently included in the recall, but it needs to be included.  I spun bearings the first time in August of 2021.  I was hoping it was just bad luck.  I hadn't heard of all the instances at the time.  I've never had a major engine failure prior to this model, and this one has failed 3 times in the same truck with meticulous maintenance.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11696129,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/09/2025","dateComplaintFiled":"10/28/2025","vin":"3GTU9DEL3LG","components":"ENGINE","summary":"The check engine light went off and started blinking. The engine started making ticking noise.  I pulled over. The check engine light kept blinking. I had the truck towed to the Chevy Dealership.  They found damage to the lifter and camshaft. They had the truck for over 2 weeks.  Luckily I purchased the extended warranty.  But the repair still cost me 1,200.00 dollars out of pocket.  And cost the warranty company over 9,000.00 dollars","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11696142,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/28/2021","dateComplaintFiled":"10/28/2025","vin":"3GTU9FEL0LG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving 55 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. In addition, there was an abnormal sound coming from the engine. Multiple warning lights were illuminated. The contact was able to coast to the side of the road. The vehicle was towed to the dealer, where it was diagnosed with engine failure. The engine was repaired. Most recently, while driving 35 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal, with an abnormal sound coming from the engine. Multiple warning lights were illuminated. The vehicle was towed to the dealer, where it was diagnosed with engine failure. The contact was informed that the camshaft, bearings, and lifters in cylinder #4 had failed. The vehicle remained at the dealer unrepaired. The manufacturer was notified of the failure. However, no assistance was provided. The failure mileage was approximately 19,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11695951,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/10/2025","dateComplaintFiled":"10/27/2025","vin":"1GTU9FEL3LZ","components":"ENGINE AND ENGINE COOLING","summary":"Tick sound coming from underneath. Also fumes smell. Dealership found it to be the exhaust system.  Said the muffler valve is bad. Quoted me $2000 for repair.  Never heard of a exhaust system failure in only 5 years.  Very unsatisfied with this.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"},{"type":"Equipment","productYear":"9999","productMake":"MIDAS","productModel":"EXHAUST PIPE","manufacturer":"MIDAS INTERNATIONAL CORP."}]},{"odiNumber":11695675,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/09/2025","dateComplaintFiled":"10/26/2025","vin":"3GTU9DED9LG","components":"UNKNOWN OR OTHER,ENGINE","summary":"I heard a ticking noise coming from the engine compartment.  I took it to the dealership that I purchased the truck from and that have been using consistently for service.  I was told that the noise was coming from a lifter on the driver's side of the engine and, on further investigation, it was determined that the camshaft had been damaged.  I was told that it could seize up as I was driving and that my safety and those with and around me would be at risk.   At 85,000 miles, the engine had failed and would have to be replaced.  There was no prior warning or no check engine light and the vehicle has been in for oil changes and all maintenance at the dealership.  The new engine cost me $15000 including diagnosis and towing.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694578,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/15/2025","dateComplaintFiled":"10/20/2025","vin":"3GTU9DED1LG","components":"ENGINE","summary":"I noticed a ticking sound in my 2020 GMC Sierra 1500 SLT 5.3 Liter on 10/15/2025 after it was serviced at an Authorize Buick GMC Dealership on 10/13/2025. I made an appointment and returned the vehicle to the dealership for further inspection on 10/17/2025. I was informed later that day that my truck has lifters and camshaft failure. If my truck had stalled or stopped on the express way, myself and others safety could have been at risk. My truck has only been looked at by the dealership at this time, and it is available for inspection upon request. There were no warning lights, check engine lights, messages or symptoms prior to the failure. I did get a low oil level message in April 2024 when the dealership stated they must not have put the correct amount of oil in my truck during an oil change on 1/29/2024. They inspected my truck and assured me there was no damage done to my Engine from this issue. I have recently learned there is a recall for GM Vehicles manufactured between 2021 and 2024 with the 6.2L engine installed. I am not sure why this recall does not include 2020 trucks with the 5.3L engines installed. Apparently, the same problems exist with these engines also. I received an estimate for repair approximately $13,000 which can increase once the engine is town down and inspected further. Any assistance you can provide would be greatly appreciated.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11694051,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/08/2025","dateComplaintFiled":"10/17/2025","vin":"3GTP9EEL9LG","components":"ENGINE","summary":"The engine failed completely while driving. On the day of the incident, I started my 2020 GMC Sierra 1500 AT4, and immediately upon cranking, the engine began knocking loudly. I shut the vehicle off right away to prevent further damage and called a wrecker service to have it towed to Marianna Chevrolet, GMC. No warning lights or messages prior to the incident.   The weather was clear and dry, and the truck was parked on level ground at the time. There were no prior warning lights, leaks, or unusual noises before this event.  The vehicle has been well-maintained, with oil changes performed regularly every 4,000 miles at a local auto shop (though receipts are not available). The brakes were replaced earlier in 2025. Marianna Chevrolet, GMC inspected the vehicle and estimated the repair cost at $12,700 due to what appears to be a major internal engine failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11693509,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/12/2025","dateComplaintFiled":"10/15/2025","vin":"3GTP9EEL0LG","components":"ENGINE","summary":"43000 miles 2020 gmc sierra with lifter engine issues. Oil change made every 3k miles","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11693652,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/15/2025","dateComplaintFiled":"10/15/2025","vin":"1GTP8DED1LZ","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving approximately 40-60 MPH, the transmission hesitated while depressing the accelerator pedal. A dealer was contacted. The vehicle was taken to the dealer and was diagnosed with transmission control module (TCM) failure. The contact was informed that the TCM needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 24V797000 (POWER TRAIN); however, the VIN was not included in the recall. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 75,200.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11693313,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/27/2025","dateComplaintFiled":"10/14/2025","vin":"3GTP9EEL8LG","components":"ENGINE","summary":"6.2L V8 engine in 2020 GMC Sierra 1500 AT4 suffered two lifter failures, which damaged crankshaft and sent metal shards throughout engine and oil. Total engine replacement required. This issue is subject to a recall for 2021 - 2024 model years and the recall should extend to 2020 model years. Vehicle was traded without functioning engine at a significant loss in value for new vehicle, and is not available for inspection. Vehicle was inspected by service department at GMC dealership and traded to a different GMC dealer. No prior indications of problems or warning lights until engine failure occurred while driving.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11690794,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/27/2025","dateComplaintFiled":"10/01/2025","vin":"1GTU9FELXLZ","components":"PARKING BRAKE,ENGINE AND ENGINE COOLING,ELECTRONIC STABILITY CONTROL (ESC)","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at approximately 35-40 MPH and hauling a trailer in stop-and-go traffic, there was white smoke coming from the exhaust pipe, and the vehicle started losing power. The contact was able to pull over to the side of the road, where the Electronic Stability Control (ESC) and the check engine warning lights illuminated. The parking brake was engaging and disengaging independently. After turning off the vehicle and waiting for approximately 15-20 minutes, the vehicle was restarted, and the contact drove to the nearest independent mechanic. The mechanic diagnosed the vehicle and determined that the ignition coils needed to be replaced. The vehicle was repaired; however, it was determined that the repair had not resolved the failure. The mechanic then diagnosed the vehicle's cylinder #4 failure. The mechanic was in the process of determining whether the lifter or camshaft had failed. The mechanic determined that the engine might need to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 93,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11690818,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/29/2025","dateComplaintFiled":"10/01/2025","vin":"3GTU9CET6LG","components":"SERVICE BRAKES","summary":"On Monday, [XXX], at about 1730 hours was traveling Southbound at 45mph on [XXX]  approaching the [XXX]  intersection. Vehicle alerted to the following codes on the dash; ESCAPE, Traction Control, Check Engine Light, Brake System Failure, \"Do not exceed 62 MPH\". I took foot off accelerator and looked up and noticed the traffic light turning red. I applied pressure to the brake and noticed there was no brake pressure at all, and the vehicle continued to roll forward towards the intersection. I put the truck in low gear to slow and continued to pump the brake rapidly. As the truck gradually slowed I turned truck off until it came to a stop. When I restarted the truck the brake hydraulic pressure returned and only the check engine light remained on. I took the truck to Reliable GMC in the Roseville Automall the next morning. The service department claimed the AGM Battery was bad and caused the front brake caliper sensor to throw a low voltage code causing a cascade event of codes throughout the system. The loss of my brakes nearly caused me to enter an intersection unwillingly and could have led to a serious accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689905,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/08/2025","dateComplaintFiled":"09/26/2025","vin":"3GTP9EELXLG","components":"ENGINE","summary":"Engine misfiring and rough idle with occasional flashing engine light.  Dealer said no codes to know what to look for despite replicating issue.  Eventually it threw a Cylinder 5 misfire and thus GM dealer was able to look further.  They found metal in oil pan and concluded a bearing issue and would need to replace engine.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689351,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2025","dateComplaintFiled":"09/24/2025","vin":"3GTU9FET9LG","components":"ENGINE","summary":"Engine timing chains failed at 71,000 miles requiring a $9,700 repair. Warranty covers 5 yr/ 100k miles and was not fully covered by GM since the vehicle was 9 months beyond 5 years, yet still well within the 100k miles. Issue was diagnosed via P0016-00 being set indicating misalignment between crankshaft position sensor and the intake camshaft position sensor. This issue is a known problem with the early LM2 engines, and the timing chain was upgraded in later LM2 engines. Early adopters of the LM2 are left to pay the price for a defective part.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689543,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/24/2025","dateComplaintFiled":"09/24/2025","vin":"3GTP8AEH0LG","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","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689544,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/24/2025","dateComplaintFiled":"09/24/2025","vin":"3GTP8AEH1LG","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\u201c.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689546,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/24/2025","dateComplaintFiled":"09/24/2025","vin":"3GTP8AEF6LG","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":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11689015,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/25/2025","dateComplaintFiled":"09/22/2025","vin":"3GTU9EET8LG","components":"ENGINE","summary":"The engine coolant control valve on my 2020 GMC Sierra 1500 with the LM2 Duramax diesel failed. The failed part is still in my truck, which remains at the dealership awaiting replacement. The repair is delayed due to the part being on nationwide backorder, further highlighting that this is a widespread issue.  When the valve failed, the truck entered reduced engine power mode while I was traveling on the interstate. This limited my speed to about 40 mph while climbing a hill. The sudden loss of power in high-speed traffic created a serious safety hazard, as it significantly increased my risk of being rear-ended or involved in a collision with faster-moving vehicles. I drove the truck directly to the dealership after the incident, where the problem was immediately confirmed.  The issue was diagnosed and confirmed by the dealership, which identified the coolant control valve as the failed component. To my knowledge, GM has not yet inspected this specific failure.  Prior to the loss of power, the truck displayed a \u201cReduced Engine Power\u201d warning message and the check engine light on the dashboard. These warnings appeared at the time of the failure.  Importantly, GM has already acknowledged this issue by issuing Special Coverage N252508341 for 2021 and 2022 GMC Sierra 1500 trucks with the same LM2 engine and the same coolant control valve part numbers. However, the 2020 models (like mine) were excluded from that program despite using the identical part and engine configuration.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11688635,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/05/2025","dateComplaintFiled":"09/20/2025","vin":"3GTU9CEDXLG","components":"POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM","summary":"2020 gmc sierra 1500 elevation 5.3l engine. Lifter failure due do faulty design I\u2019m afm/dfm systems.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11688359,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2025","dateComplaintFiled":"09/19/2025","vin":"3GTU9FED2LG","components":"POWER TRAIN,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle jerked abnormally while depressing the accelerator pedal. A dealer was contacted. The vehicle was taken to the dealer, and the technician informed the contact that the failure might be related to the engine or transmission; however, the contact was informed that the vehicle needed to be inspected to determine the cause of the failure. The vehicle was not repaired. The contact stated that the failure had occurred several times. The manufacturer was notified of the failure and informed the contact to file a complaint with the NHTSA Hotline. The approximate failure mileage was 41,248.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11687856,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/02/2025","dateComplaintFiled":"09/17/2025","vin":"1GTU9DELXLZ","components":"STEERING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that upon start the vehicle, the vehicle lost power steering functionality. The messages \u201cService Power Steering\u201d, \u201cPower Steering Disabled\u201d were displayed, and ESC warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed, and the contact was informed that further diagnostic tests were needed to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 115,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11686873,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2025","dateComplaintFiled":"09/12/2025","vin":"3GTU9DED2LG","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission experienced rough gear shifts. Additionally, the vehicle shuddered while driving. The vehicle was taken to an independent mechanic, who was unable to diagnose the vehicle due to a lack of diagnostic equipment. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 120,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11685689,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/07/2025","dateComplaintFiled":"09/08/2025","vin":"1GTP9EEL3LZ","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving approximately 40 MPH, there was an abnormal knocking sound coming from the engine compartment. The contact stated that several unknown warning lights were illuminated, and several messages were displayed. The vehicle was driven to the side of the road to safety and turned off. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure milage was approximately 76,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11685227,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/15/2024","dateComplaintFiled":"09/05/2025","vin":"1GTU9FEL6LZ","components":"SERVICE BRAKES, HYDRAULIC,ENGINE,BACK OVER PREVENTION","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that on several occasions while the vehicle was started, the check engine, brake system, and another unknown warning light illuminated. Additionally, the messages brake system failure, steering wheel failure, low oil, and two other unknown messages were displayed. The contact also stated that the rear-view camera remained displayed while shifted into drive, and the instrument panel failed to operate as intended. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 65,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11684768,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/19/2025","dateComplaintFiled":"09/03/2025","vin":"3GTU9FEDXLG","components":"ENGINE","summary":"Vehicle: 2020 GMC Sierra Denali 1500 (VIN: [XXX] )  Description of the Problem: My 2020 GMC Sierra Denali has developed serious engine problems that create unsafe driving conditions. On [XXX], I documented loud knocking and clicking noises coming from the engine. The vehicle also shows warning lights and unpredictable performance.  Because of these defects: \u2022I cannot safely drive the truck without risk of engine failure while on the road. \u2022The noises and mechanical issues raise concerns about potential loss of power, stalling, or catastrophic engine damage at highway speeds. \u2022No independent mechanic will touch the vehicle because of the complexity and risk of the defect, leaving me stranded.  General Motors has refused to take responsibility, and the BBB AUTO LINE denied my case due to mileage, but the defect itself is unrelated to mileage or normal wear. This is a manufacturer defect that creates a safety hazard for me, my family, and other drivers on the road.  What I\u2019m Requesting: I am asking NHTSA to investigate this issue with GMC Sierra models, as these engine defects make the vehicle unsafe to operate and could lead to accidents if the engine fails while driving. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11684363,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/20/2025","dateComplaintFiled":"09/02/2025","vin":"1GTP9EED2LZ","components":"STEERING","summary":"My extended warranty expired. I got my oil changed at valvoline and then 2 days later my power steering stopped working and I\u2019m getting multiple dash messages of other systems malfunctioning. Did gmc cause this to get me to come back to their service center. It seems very suspicious","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11683304,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/14/2025","dateComplaintFiled":"08/26/2025","vin":"3GTP9EEL6LG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"My 6.3l v8 Started having a slight misfire while driving. Took vehicle to a mechanic and was advised to change the spark plugs, changed spark plugs, spark plug wires, and ignition coil packs while still experiencing sudden misfires while driving. Starting to consider the 6.2L L87 collapsing cylinder issue.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11682879,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/23/2025","dateComplaintFiled":"08/25/2025","vin":"3GTU9DEL6LG","components":"STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"Was driving down the freeway around 65 miles an hour attempted to pass a truck when the steering started wobbling the ABS that EMS and the breaking system came on with the check engine light almost had no control and barely avoided having an accident the only way it went back to normal was slowing down.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11681985,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/31/2025","dateComplaintFiled":"08/20/2025","vin":"1GTP9EEL4LZ","components":"SERVICE BRAKES","summary":"My vehicle displayed numerous brake failure codes and limited my speed to 43mph. When taken into my local GMC dealer the diagnostics I was given were a bad/leaking master cylinder. This vehicle has 16,200 miles on it and was never used for towing or hauling. The brakes are hard and brake assist has clearly failed. I\u2019ve found numerous recalls and issues with other year vehicles from GMC, yet they are denying any liability on my vehicle. They want over $3000 to replace the master cylinder even though there\u2019s no physical leak observed via fluid loss. This is a major safety concern when a major brake component fails on such a low mileage vehicle. This truck also has a well known seal leak on the rear window that causes mold to grow inside of the vehicle cabin. Apparently no one has died yet so they have not been forced to put out a recall. Consumers should not be forced to spend thousands of dollars on major components on such low mileage vehicles. Especially when it comes to safety items like braking. I\u2019ve researched this for hours and have found this has been a known issue on these 2020 models many people. Some even brand new after driving them off the dealership lot. Clearly there is an issue and the manufacturer refuses to address it.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11680181,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/12/2025","dateComplaintFiled":"08/12/2025","vin":"1GTP9EEL0LZ","components":"UNKNOWN OR OTHER","summary":"My doors will no longer lock or unlock, using the key fob or the lock/unlock buttons in the vehicle.  This is a widely known issue for GMC Trucks, once you search for it.  At around 50K Miles, the door actuators just quit working.  So, if I have kids in my truck, I can't unluck the doors to get them out unless I climb through the truck, and have to manually do same to lock the doors to drive with kids in the car.  There isn't a key hole for the back doors, so this can't be done at all outside the car.  The doors are supposed to automatically lock when the truck is put in gear.  Mine won't lock even when I push the button to lock.  I just had this confirmed at the dealer.  I also spoke to GMC and was told that it wasn't their responsibility.  This is a genuine safety issue, and happens on these trucks a LOT.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11680272,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/10/2025","dateComplaintFiled":"08/12/2025","vin":"1GTP9EEL1LZ","components":"POWER TRAIN,ENGINE","summary":"I have a 2020 sierra 1500 6.2 with 86,000 miles. I have only had this truck 6 months. This was inspected before I purchased with no engine issues. Since purchasing we have driven less than 6000 miles. While driving my vehicle the rod in the engine failed and started knocking. I am a mechanic and I am GMC master certified. Both myself and the owner of the shop I work at diagnosed the vehicle with a bad engine. We looked at the recall for the 6.2 engine and noticed that many of the 2020 vehicles with this engine have the same issue that is currently being recalled for this specific engine. I called GMC and they won\u2019t fix the issue that the vehicle is having. They won\u2019t perform the recall and again I have only had this vehicle for 6 months and with 86,000 miles should not be having this issue.  I am GMC certified and told them that I looked into the recall and they them selves state that some of the defective engines got out into the 2020 models.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11678987,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/06/2025","dateComplaintFiled":"08/07/2025","vin":"3GTP9EEL7LG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"For approximately the last year (2024-2025) my 2020 GMC Sierra 1500 AT4 with the 6.2L engine has had noticeable ticking, knocking, and unprovoked shaking upon start up and idle.  The pickup has stalled out at stop lights and intersections in the past, posing risk.  In June (2025) the pickup was taken to a certified mechanic for inspection who suggested possible lifter or valve failure.    The vehicle exhibits a persistent ticking sound from the engine, which I believe may be related to lifter or valve issues, similar to those reported in lawsuits against GM for 2019-2024 models and the recall for 2021-2024 models (NHTSA Recall ID: 24V-676). This ticking occurs regularly, including at approximately 54,500 miles, and raises concerns about potential engine failure or sudden loss of propulsion, which could be hazardous, especially at highway speeds.  I have noticed approximately 2 quarts of engine oil usage per my last 2 oil changes (roughly every 6,000 miles).   I recently had taken the pickup to a local GM dealership where they informed me that I am not longer covered under warranty and the recent recall is not applicable.  I was advised to \u201ckeep and eye on it, and get a AAA membership\u201d.    I am aware of at least 10 class action lawsuits against GM for similar engine issues in vehicles like mine, suggesting a widespread defect. These issues, combined with the potential for engine failure or impaired vehicle control, warrant investigation to ensure driver safety.   I have records of the ticking sound and can provide further details if needed.  I am willing to cooperate with NHTSA for inspections or further documentation.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11678277,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/04/2025","dateComplaintFiled":"08/04/2025","vin":"3GTP9EEL1LG","components":"ENGINE,ELECTRICAL SYSTEM,EQUIPMENT","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving with cruise control mode set at 55 MPH, the vehicle independently accelerated to 98 MPH, and then the vehicle lost motive power. Additionally, the contact stated that the vehicle had failed to turn off upon pressing the Engine Start/Stop button. No warning light was illuminated. The vehicle was able to restart and was taken to a local dealer to be diagnosed, but the cause of the failure could not be determined. Additionally, the contact noticed that water was leaking inside the vehicle through the rear window on rainy days. The contact stated that the infotainment screen had failed to turn on as intended on some occasions, and the screen had displayed a rearview camera image while the vehicle was in drive(D) on other occasions.  The contact stated that while driving at various speeds, the transmission made an abnormal sound, and the RPMs failed to decrease as intended, but suddenly dropped while decelerating. Additionally, the contact stated that the headlights, the fuel pump, and the main pulley were replaced at the local dealer.  The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 250.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11674781,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/03/2025","dateComplaintFiled":"07/19/2025","vin":"3GTU9FEL9LG","components":"ENGINE,FORWARD COLLISION AVOIDANCE","summary":"My GMC had a terminal engine failure around 5/3/25. This disengaged the ESC, parking brake, and driver assist abilities as well as making the truck undrivable. GMC service diagnosed the truck needed an entire new engine. The repair took over 2 months to complete and now that I have the truck back, the adaptive cruise control is not working.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11673317,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/11/2025","dateComplaintFiled":"07/14/2025","vin":"1GTU9CET9LZ","components":"ENGINE","summary":"Check engine light came on. Cooling fan for engine running none stop. Reduce power mode from engine.   Took to dealer, said it\u2019s the coolant control valve.  Dealer said the part is on back order and don\u2019t know when they will get it in.   Looked up the issues and sounds like many people are having the same problem with the 3L diesel from GMC. These people reporting the same thing and having to wait months for the part.   My truck was just out of warranty by 200-300 miles","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11673021,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/24/2024","dateComplaintFiled":"07/12/2025","vin":"3GTU9DED9LG","components":"UNKNOWN OR OTHER,LANE DEPARTURE,BACK OVER PREVENTION","summary":"1. Lane Keeping Assistantance: The green vehicle indicator on the dashboard will disappear and stay off while driving.  When it is off, it is unsafe.  2. Parking Collision Warning: The front and back sensors will disappear and become nonfunctional while driving and parking. Sometimes they activate for no reason as well.  3. Both exterior mirrors:  After starting the engine to drive off , both exterior mirrors will lower automatically from my setting.  After the truck is started and driven off, they must be rest again.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11672898,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2025","dateComplaintFiled":"07/11/2025","vin":"3GTU9DED8LG","components":"STRUCTURE,UNKNOWN OR OTHER","summary":"My multipro tailgate on my 2020 GMC Sierra 1500 unlatched while a trailer was attached and backing up said trailer. The trailer jack post proceeded to buckle the upper part of the tailgate assembly causing extensive damage resulting in over a three thousand dollar repair bill. If the tailgate had released while a child was in close proximity, serious injury may occur. The tailgate has inadvertently released twice in the five plus years I have owned it, the first time as I was traveling down a highway at over 60 mph. This could have endangered a vehicle to my rear if cargo had been released on to the road. I have reached out to a local dealership for repairs and assessment, no real way of troubleshooting something that has happened twice in five plus years. The scan did not show any codes. the info center does notify you if it is released but not before it takes place and after the fact may be too late in some circumstances as it was during the second occurrence. There has been a recall on 2500 and 3500 models with the exact same tailgate but not the 1500 models. 820K vehicles affected but not on the 1500's.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11671169,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2025","dateComplaintFiled":"07/03/2025","vin":"3GTP8CEK1LG","components":"ENGINE","summary":"On June 19th, 2025, I was driving to work when my truck began to lose power, and the check engine light came on. The error on the display is Loss of Engine Power. I took it immediately to Oreilly's so they could run the free engine light check. When they got the report, the employee was amazed that there were over 45 problem codes showing up. As I drive the vehicle there is a pull back from the engine before it starts to pick up speed.  On braking as well there is a little kickback before it comes to stop. It takes more foot pressure to pick up speed. The Truck using up more fuel because of this issue. I took the truck to a local certified mechanic, and he ran the diagnostics as well and it came up with the over 45 problem codes as well. His recommendation unfortunately was to take into the dealership so they could check it and see if they have a solution for this engine malfunction and error codes.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11670761,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"07/02/2025","vin":"3GTU9DETXLG","components":"ENGINE","summary":"Engine overheating at 50,000 miles. Temp would intermittently jump up to 230plus degrees while driving. Radiator replaced per dealership diagnosis. Issue still happening.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11670340,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2025","dateComplaintFiled":"06/30/2025","vin":"1FDXW46PX3E","components":"ELECTRICAL SYSTEM,ENGINE","summary":"Woke up one morning and the entire back seat, entire truck flooring was soaking wet.  Got it to Gerber collision in El Reno, Oklahoma.  They said that the back window had a crack in it.  My insurance said it is a mechanical issue on the sliding back glass and they do not cover such issue.    Also want to turn in that the transmission in this truck had to be replaced two week prior to this incident.  The truck only had 118,000 miles on it.    Safe to say that this 10 point GMC diesel truck is a nightmare and the entire truck is a hazard. They need to take these truck off the market.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11670001,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/26/2025","dateComplaintFiled":"06/28/2025","vin":"3GTU9FET9LG","components":"POWER TRAIN","summary":"I had the rear wheel recall done not long ago and 2 days ago my transmission shuddered.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669873,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/27/2025","dateComplaintFiled":"06/28/2025","vin":"3GTU9FEDXLG","components":"SERVICE BRAKES","summary":"I will start by saying that I have had this issue since I had the truck (2020), less than 10k miles. I mentioned to the dealer multiple times.  I was told that they can't figure it out since it has to be doing it while it is at the dealership to figure it out. I am finally fed up with that answer. The issue is with trailering.  It will randomly lose trailer brakes while driving down the road.  Sometimes the brakes will come back right away, sometimes they will not. Other times other lights that should be working will randomly stop working as well such as turn signals. This has happened multiple times and I only tow a few times a year when I pull my travel trailer.  I have a video of it doing it as I am driving down the road. For the additional details with approximate date that this incident occurred, I will put the last date that this was found.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11669245,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/21/2025","dateComplaintFiled":"06/25/2025","vin":"1GTU9CED2LZ","components":"ELECTRICAL SYSTEM","summary":"Power Steering works sometimes and then stops  Trailer Break system issues","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11668978,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/24/2022","dateComplaintFiled":"06/24/2025","vin":"3GTU9FET2LG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving on a main road at 40 MPH, the vehicle lost automotive power, causing the vehicle to shut off. There was no warning light illuminated. The vehicle was towed to a local dealer where the vehicle was diagnosed, and the contact was informed that the engine wiring harness was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 80,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11668057,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/20/2025","dateComplaintFiled":"06/20/2025","vin":"1GTP9EEL3LZ","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was an abnormal knocking sound coming from the engine compartment before the vehicle lost motive power with the check engine warning light illuminated. The vehicle was towed to the residence. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The dealer referred the contact to the manufacturer for further assistance. The manufacturer was made aware of the failure. The approximate failure mileage was 138,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667595,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/23/2025","dateComplaintFiled":"06/18/2025","vin":"1GTV9CET5LZ","components":"STEERING","summary":"While driving vehicle at normal speeds the steering assist goes out and becomes very hazardous to drive. It is intermittent and does not do it all the time. When connected to dealer diagnostic machine it throws several codes. I have read on several GM sites this problem is widespread and GM is actively saying they haven\u2019t heard of this problem. When the problem occurs it is almost impossible to control the truck to get over to the side of the road.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667795,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/26/2024","dateComplaintFiled":"06/18/2025","vin":"3GTP9EEL0LG","components":"VISIBILITY/WIPER","summary":"The rear back glass is leaking water excessively in to the inside of the vehicle when it rains or gets washed. The vehicle is available at any time for inspection. The amount of condensation that accumulates on all the interior windows makes it impossible to see out of the vehicle. The defrost can not handle the amount of moisture build up. The Dealer knows about this condition and it has been verified by a window company. The manufacture knows and understands there is a problem and has put out a Technical Service Bulletin ( TSB 18\u2011NA\u2011383 ) for this issue but will not cover the repairs. GM knows that every single vehicle with this window designs from 2019-20121 will leak just outside the 3 year 36k mile warranty coverage. The cost of repair is approximately $2k. Dealer will not cover repair.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11667541,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/15/2024","dateComplaintFiled":"06/17/2025","vin":"3GTU9DED0LG","components":"ENGINE","summary":"I own a 2020 GMC Sierra 1500 with a 5.3 liter engine..... My engine lifters failed at 105,235 miles.... Lifter broke and damaged the Cam Shaft to a point that required full engine replacement costing me $10,800.  When I asked GM for help, they denied because I went to a local repair shop with certified mechanics.  I believe GM is fully aware of this problem and they are ignoring   I think GM should pay for at least half of my repair bill.  Thank you!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11666650,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/03/2023","dateComplaintFiled":"06/12/2025","vin":"3GTU9DEL8LG","components":"ENGINE","summary":"Engine failure/ lifter issue with no prior warning.  Driving down the road vehicle suddenly lost power and error message appeared.    The vehicle was inspected by GM dealer and extended warranty company in late 2023.   We no longer own this vehicle","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11666321,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/11/2025","dateComplaintFiled":"06/11/2025","vin":"3GTP9EEL2LG","components":"ENGINE","summary":"I took my 2020 GMC Sierra 1500 to the dealership after Cylinder #5 seized while driving, and I was forced to replace the entire engine. At the time, I contacted the dealer and was told there was no recall related to this issue. However, I have since learned that GMC has issued a recall for similar engine problems affecting 2021\u2013present Sierra 1500 models, but not for my 2020 model year. I believe this issue may be related and would like further investigation and consideration.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11666326,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/11/2025","dateComplaintFiled":"06/11/2025","vin":"3GTP9EEL2LG","components":"SERVICE BRAKES","summary":"I was driving my 2020 GMC Sierra 1500 on a local street when the dashboard suddenly displayed a \u201cBrake Failure\u201d warning. I immediately realized I had no braking power and had to safely roll into an uphill parking space to stop the vehicle.  While waiting for the tow truck, I researched the issue and discovered there is a known recall related to the brake calipers on some 2020 Sierra 1500 models. However, when I entered my VIN, it showed no open recalls. I also contacted GMC directly, and they confirmed that there are no active recalls associated with my vehicle.  Additionally, the vehicle's onboard information system indicated that the front brakes were at 65% and the rear brakes at 80%, suggesting that brake wear was not a contributing factor.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11666338,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/11/2025","dateComplaintFiled":"06/11/2025","vin":"1GTU9FED4LZ","components":"ENGINE","summary":"My engine slowed down on the interstate. My steering wheel was visibly shaking and I lost the steering access control. The truck threw an Cylinder 6 error code. At the mechanic, they identified that at least one of my camshaft lifters had failed. If I had continued to drive my vehicle, the engine block would have eventually locked up.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11665848,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/04/2025","dateComplaintFiled":"06/09/2025","vin":"3GTU9FEL6LG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was an abnormal knocking sound coming from the engine compartment and the vehicle then failed to exceed 30 MPH. No warning lights were illuminated. The vehicle was taken to the dealer, who were unable to determine the cause of the failure. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 90,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11665927,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/01/2025","dateComplaintFiled":"06/09/2025","vin":"3GTU9DEL9LG","components":"ENGINE","summary":"Vehicle currently has 104K and needs a 3rd engine. The same issue happened to the second engine as the first. While Driving the engine just stop working. They say it is a problem with the camshaft. Metal gets into the transmission and that also has to be replaced. A vehicle engine should not just stop working! Especially on an interstate. GMC refuses to add this engine to the recall list. However, I don't understand how the safety of families can continue to be placed in jeopardy.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11665580,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/15/2025","dateComplaintFiled":"06/08/2025","vin":"3GTP8DED3LG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Transmission has slipped and shuddered multiple times. We have had it diagnosed at gmc dealership and our mechanic, advising that it is 8L90 transmission failure. It will slip to lower gear abruptly, causing for possible safety issues especially on the highways.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11665446,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/09/2025","dateComplaintFiled":"06/07/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"1. On 05/9/25, the exhaust emissions system malfunctioned, triggering diagnostic trouble code P2C7A (exhaust emissions system failure). This repair, the seventh attempt since June 2024, addressed the same recurring emissions issue previously involving replacements of components such as the NOx converter (02/18/25, 03/13/24) and EGR valve (02/18/25). The vehicle is available for inspection upon request. 2. The P2C7A failure risks limp mode, reducing vehicle power unexpectedly, which is hazardous on highways, especially while towing. Exhaust emissions system malfunctions release excessive pollutants, posing environmental and health risks to others.  3. Yes, the P2C7A code was confirmed by dealer during the 05/9/25 repair, following prior confirmations (e.g., 03/31/25\u201304/05/25.  4. The vehicle was inspected by Young Chevrolet-Cadillac during multiple repairs (e.g., 03/31/25, 05/9/25).  5. Yes, the check engine light and OnStar emissions alerts appeared prior to the 05/9/25 repair, first noted ~June 2024 (P2C7A onset). Exhaust smell and reduced fuel economy were observed intermittently. Symptoms persisted post-03/31/25 repair, leading to the 05/23/25 service.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664515,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/26/2024","dateComplaintFiled":"06/03/2025","vin":"1GTP9EEL6LZ","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Hi I have always taken good care of my 2020 gmc Sierra 1500 at4 6.2  Kept up with its regular and recommended maintenance. I had no warning signs on the dash. So it surprised me that while on my way to work early one morning I was getting off the highway exit and the truck lost power, my steering wheel hardened and it posed a great threat to my life and others on the road, as it suddenly decelerated in a area where people are driving at accelerated speeds. The whole  truck was loosing power and shaking hard as I attempted to steer it to a safe location on the side of the road. Had a mechanic inspect it and they determined The truck ended up with a seized engine. I have since not been able to use my truck for 8 months and still currently paying monthly payments of 1000 to pay it off.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664725,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/02/2025","dateComplaintFiled":"06/03/2025","vin":"1GTU9FEL6LZ","components":"STEERING,ELECTRICAL SYSTEM,ENGINE","summary":"Loss of power steering. Loss of engine propulsion at high rates of speed. Engine would not start.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664426,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/02/2024","dateComplaintFiled":"06/02/2025","vin":"3GTP8DEDXLG","components":"SUSPENSION,ELECTRICAL SYSTEM,WHEELS","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving 60 MPH, the horn failed to function as intended. There were no warning lights illuminated. The contact stated that on a separate occasion, the right lane sensor stopped working as intended. There were no warning lights illuminated. The contact stated that on a separate occasion, while driving 60 MPH in the rain or on rough asphalt, the rear suspension caused the vehicle to fishtail to the right. The contact turned to the left to control the vehicle. The contact stated that the vehicle returned to normal functionality after the failure. The low transmission fluid warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed the vehicle with an electrical systems failure. The independent mechanic informed the contact that there was adequate transmission fluid inside the transmission, and it was unclear why the warning light was illuminated. The contact was informed that weights were added to the wheels to balance each wheel. The vehicle was not yet repaired for the other failures. The contact stated that the transmission was replaced a year prior to the failure, and the horn had failed to function soon after the transmission replacement. The manufacturer was made aware of the failure. The failure mileage was approximately 68,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664226,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"06/01/2025","vin":"3GTP8BEKXLG","components":"POWER TRAIN","summary":"I am reporting an ongoing safety issue with my 2020 GMC Sierra 2.7L related to the transmission. On two separate occasions within the same month, my truck broke down in the middle of the street, requiring it to be towed to the dealership for service.  The first time, the dealer informed me they repaired a part inside the transmission and stated the truck was fixed. However, after picking up the vehicle, the issue persisted, though not as frequently. When I called them, they advised me to drive it for another 100 miles so the valve could fill with oil and the transmission could properly recalibrate.  After a few days of driving, the same issue occurred again \u2014 the truck stalled in the middle of the street, and I had to have it towed once more to the dealership. This time, the truck remained at the dealer for about a week. They replaced another part inside the transmission and returned the truck to me, noting that it only had about 40 miles of warranty remaining.  I asked the dealership to extend the warranty or give me at least two months to test the truck and confirm the issue was resolved, as I am genuinely concerned for my safety and my family\u2019s safety if the vehicle breaks down again on the road. They told me they would respond within two days, but it has now been over 10 days with no response.  I am currently afraid to drive the vehicle because of the risk of it breaking down again, especially with my family inside. I am requesting that NHTSA review this issue for potential safety concerns with the transmission system in this vehicle model.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664201,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/25/2025","dateComplaintFiled":"06/01/2025","vin":"3GTU9DEDXLG","components":"ENGINE","summary":"Lifter failure at around 102-103k miles, was doing a random misfire and transmission studder ( due to the dfm system activating, cutting down cylinders to save fuel while driving, this was happening since approx 59k miles, dealership and gm was aware of it and they said it was normal, but that normal misfire turned into a failed lifter causing misfire and studder. I ended up replacing the lifters myself put solid lifters and a new camshaft that would eliminate the dfm system and studder, ran good no studder and random misfire, and now my crankshaft or oil pump is bad which I will remove motor to furthermore inspect. I\u2019ve read forums and stuff where people would get a lifter job done and then soon after couple thousand miles later the motor goes bad. The 5.3 motors have bad crankshafts, oil pump and lifters just like the 6.2lt motors. After the lifter and cam repair, it ran good for couple thousand miles shortly after My gmc threw an \u201coil pressure low turn off vehicle code\u201d, turned off vehicle immediately and checked oil, verified oil was good. Gm will not cover it because of it being way out of warrenty when I had issues with random misfire around approx 70-78k miles,  and to note that my cat converter went back when lifter failed aswell. Also to note that when the lifters fails  it throws a speed reduced to 55 mph, traction off, steering assist reduced, and brakes reduced, this is a safety hazard and also it will drain the battery and cannot start it if you pull over on the side of the road and turned it off and on again to make it back home.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11664079,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/20/2024","dateComplaintFiled":"05/31/2025","vin":"1GTU8CED5LZ","components":"ENGINE","summary":"Misfire alerts causing major motor repairs","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663591,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/18/2025","dateComplaintFiled":"05/29/2025","vin":"1GTU9DED2LZ","components":"ENGINE","summary":"My 5.3 engine spun a bearing on the crank. Same exact problem the 6.2 got recalled for. Now if I put a used engine in it\u2019ll cost me around $6,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663601,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/10/2024","dateComplaintFiled":"05/29/2025","vin":"3GTP8DED5LG","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"TRANSMISSION SHURTTING, JERKS, AND VIBRATION, BAD TORQUE CONVERTER BUBBLE AND PELLING PAINT. IT FEEL LIKES ENGINE IS LOSSING POWER","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663186,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/06/2025","dateComplaintFiled":"05/27/2025","vin":"1GTP9EEL6LZ","components":"UNKNOWN OR OTHER,ENGINE","summary":"6.2 liter engine fail- replaced at new cost, 20,000 miles later another 6.2 engine failed.  unable to get new engine due to GMC finally recalling the engine.  My VIN is not included in the recall. I now have no vehicle to drive but still have a loan to pay.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11663023,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/21/2025","dateComplaintFiled":"05/25/2025","vin":"3GTP8BET6LG","components":"ENGINE","summary":"Driving at freeway at 65mph, suddenly is air noise like air conditioning blows air at high fan speed, than the dash info shows (Engine Power is Reduce) try to accelerate to pull out of lanes, and it did not, keep losing speed, as slowly move lanes to the right of freeway, and then exit.. This is the second time of this incident, first time under warranty, dealer fix transmission first time, then two months later, the tansmission was replace wit a newone, now is passed warranty, had the car taken to dealer, they gave me and estimate of more then $10,000 to fix the vehicle, this happen on May 21, 2025...","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662870,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/23/2025","dateComplaintFiled":"05/23/2025","vin":"1GTU9CET6LZ","components":"POWER TRAIN","summary":"Transmission valve control malfunctioned, causing rear wheels to temporarily lock, skidding the tires.  This almost caused me to loose control, endangering myself and others around me.  This is the second time this problem has happened.  A recall related to this was addressed on this truck, though it has clearly done nothing to prevent it from happening.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662873,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/23/2025","dateComplaintFiled":"05/23/2025","vin":"1GTU9CET6LZ","components":"POWER TRAIN","summary":"Transmission valve control system malfunctioned, causing rear wheels to lock up at high speeds, in turn causing tires to skid out.  This issue almost caused me to loose control of the vehicle, potentially endangering the safety of myself and others near me at the time.  This is the second time this has happened while I have been driving this vehicle.  There was a recall related to this issue, which was addressed, but very clearly did absolutely nothing to prevent this incident from occurring.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662486,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/30/2022","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"Vehicle drop in gear / down shift while driving on the highway. went from 75MPH down to 55MPH due to high RPM revs.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662487,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/19/2023","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Vehicle Stuck in gear. Dealership was delivering the car back to myself when about a mile out from my house when the vehicles made a sudden downshift and was stuck back in gear. Driver called and notified me that it was on its way back to the shop for further work","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662488,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/18/2023","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"ELECTRICAL SYSTEM","summary":"While driving my vehicle it began down shifting harder than normal (at various speeds and road (highway, city and dirt road)); along with a noticeable burning smell after every trip.  GM Maintenance personnel discovered that the wire was chafed and arching / catching on fire underneath passenger side resulting in the burning smell and the wiring issue aligned to the transmission. Personnel took a video and provided to me as evidence of the fire / smell; however, that was on their official GM app so i was unable to download","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662489,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/31/2024","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"UNKNOWN OR OTHER","summary":"Engine light came on while driving / aligned to transmission temp sensor error and brake sensor  GM Maintenance was able to diagnosis that the Temperature Loop Coolant Pump had failed and needed to be replaced.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662491,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/13/2024","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"UNKNOWN OR OTHER,ENGINE","summary":"No warning; picking up child from daycare. went to depart daycare when my dash lit up like a Christmas tree with various errors, alerts, warnings; along with, not being able to start. had to be picked up by spouse and get the truck towed to the dealership for maintenance.   Maintenance tech discovered that the grounding straps for the truck needed to be replaced / resulting in a complete electrical failure of the vehicle.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662494,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/03/2024","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"ELECTRICAL SYSTEM","summary":"After repair got a few miles down the road and noticed the volt meter jumping back and forth between the white lines. Line would slowly go up to max line and then slowly drop back down to lower limit and continue to go back and forth. This was very concerning to myself and i was waiting for something to fail while driving.  Got about 10 miles away and was to concerned / returned the vehicle  Informed by GM Maintenance tech that this is what / how the vehicle is designed and that it is the operating within its parameters. I expressed that only time i noticed something like this was prior to an engine light / electrical failure; however, maintenance team expressed GMs stance that it is operating within tolerance.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662496,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/03/2024","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Engine light came on and real bad urine smell / burning coming from the vehicle / rough performance. This issue occurred at various speeds / trips / drive types with the only variation being speed from 25MPH to 75MPH.   Vehicle went in to discover that the reductant control module software (RCM) out of date, and two NOx sensor failures","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662497,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/14/2025","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,UNKNOWN OR OTHER,ENGINE","summary":"Vehicle was going in for warranty recall; however, i requested they look at the DEF system as my DEF gauge would bounce between full and empty; along with, alert me of going into LIMP mode.   GM Maintenance updated the recall and noticed that the DEF tank sensor failed and required to be replaced.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662500,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/19/2025","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Engine light would come on for a few days  and than turn itself off. this occurred for about 8/9 months; however, instructed by the GM Maintenance department that if the vehicle came in and the light turned off before they got to it i would be charged for the diagnosis and no work would be performed.   Engine light came on and i was able to park the vehicle / they picked it up and read it prior to putting in their lot until a tech became available.  GM Maintenance was able to diagnosis that there was an issue with the EGR sensor and NOx catalytic converter without filter failed / both items replaced","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662504,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/02/2025","dateComplaintFiled":"05/22/2025","vin":"3GTU9BETXLG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"Engine Light came on, performance rough at various speeds / conditions, and smelled like burning and strong urea smell.  GM Maintenance identified a failed DEF injector / replaced","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662251,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/30/2024","dateComplaintFiled":"05/21/2025","vin":"1GTU9FELXLZ","components":"UNKNOWN OR OTHER","summary":"Rear window is leaking top coners from seal or plastic creating black mold inside of truck","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662292,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2024","dateComplaintFiled":"05/21/2025","vin":"1GTP8CED5LZ","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle jerked while accelerating and while coming to a stop. The check engine warning light was illuminated. The vehicle was taken to the dealer, but no cause of failure was found. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 65,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11662056,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/18/2025","dateComplaintFiled":"05/20/2025","vin":"3GTP9EEL9LG","components":"ENGINE","summary":"Engine started rough idle, reduced power, poor acceleration, ticking and knocking noises, and a check engine light and a few other lights came on the dash.  Safety was not a risk at time of incident.  Problem has NOT been diagnosed yet BUT have done a ton of research and it\u2019s all leading towards lifter failure/misfire issues.  No warning lights or symptoms prior to sudden problems.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661868,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/08/2024","dateComplaintFiled":"05/19/2025","vin":"3GCPCREC7EG","components":"POWER TRAIN,ENGINE","summary":"This car had lifter motor failure at 135K miles and Transmission failure at 145k miles, the torque converter of this truck is the culprit of many issues as the lifter issues.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661973,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/19/2025","dateComplaintFiled":"05/19/2025","vin":"3GTU9FEL3LG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while attempting to start the vehicle, the vehicle vibrated abnormally. The engine warning light was illuminated. The contact stated that on another occasion, while driving at an undisclosed speed, there was an abnormal knocking sound coming from the engine. There was no warning light illuminated. The vehicle was towed to the dealer; however, a cause for the failure was not found. The vehicle was not repaired. The failure recurred and the contact stopped driving the vehicle. The manufacturer was not made aware of the failure. The failure mileage was approximately 110,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661608,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/01/2025","dateComplaintFiled":"05/17/2025","vin":"3GTU9FEL8LG","components":"UNKNOWN OR OTHER","summary":"I purchased a 2020 GMC Denali Sierra 1500. My oil light has came on twice and I have taken it into the dealer and dealer has said that that's normal. That car loses oil. I'm retired so I do not utilize the vehicle every day I think since I've had the vehicle I've put on several thousand miles very very low mileage put on. And I'm being told that I need to check the oil basically before I take the vehicle anywhere. During the first time when I bought the vehicle in when the light came on the mechanic said in the paperwork from GMC service that my engine oil was extremely low. This last time that I did take it in, I have some type of mechanical background, so I pulled the dipstick out and it was halfway full with oil. I took a picture of that dated the picture and said I took it in before service while when I took it into the service department of course when I came home, they said that everything's fine and so on and so on and that didn't sit well with me. So I went ahead and let the car settle. Let the car cool down several hours later. I went ahead and checked the dipstick and the dipstick was full. They went ahead and put oil into my vehicle and told me that everything's fine. And I have noticed that there are lawsuits out in regards to oil consumption issues on these vehicles. When somebody spends the amount of money they spend for these vehicles we should not have to be checking the oil almost every time we drive it. I've had multiple vehicles on 50 years old and I've never had to check the Oil like it was 1914 before you go on a trip or even drive your vehicle. I am not trying to blame the Dealership only being told that everything's fine but GMC the company needs to rectify this problem because there is going to be a time that people are going to forget about the oil and burn up an engine and then you're putting them out thousands of thousands of dollars because of a mistake GMC made they're trying to cover it up as you see with the current recall in regards t","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661497,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/16/2025","dateComplaintFiled":"05/16/2025","vin":"3GTP9EELXLG","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted. There was no warning light illuminated. The vehicle was able to restart. The vehicle was taken to the dealer, where it was diagnosed and determined that the transmission had failed and needed to be replaced.  The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 70,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11661225,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"05/15/2025","vin":"3GTU9DED0LG","components":"ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"I was driving about 45 mph when the vehicle started to brake on its own. Message center said \"Brake Failure max speed 62 mph\". I had to move the vehicle, so I continued forward. It was still trying to self-brake, i decided to stop and turn ignition off so computers could re-set but I had no brakes. I had to stand on brake pedal to get it stopped. Turned ignition off and restarted. The problem was gone, but it happened again 2 weeks later. Took to dealership where purchased and they said it needed a computed recalibration. Something I didn't know about. They charged me $200 to recalibrate the computer. My issue is the danger of not having brakes, not the $200. How many similar vehicles could this happen to?","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11660879,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/14/2025","dateComplaintFiled":"05/14/2025","vin":"3GTP9EEL5LG","components":"ENGINE AND ENGINE COOLING,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 5 MPH, the vehicle made an abnormal popping sound. The check engine and the ABS warning lights were illuminated. The messages \"Parking Brake Service\" and \"ESC Service\" were displayed. Additionally, the contact stated the vehicle experienced a reduced fuel range. The vehicle was taken to the dealer, where it was diagnosed that the lifters had fractured, causing damages to the engine. The dealer determined that the engine needed to be replaced, and the part was ordered. The vehicle was not repaired. The contact related the failure to NHTSA Action Number: PE25001 (Engine, Engine and Engine Cooling). The manufacturer was notified of the failure. The failure mileage was approximately 80,100.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659914,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/29/2024","dateComplaintFiled":"05/09/2025","vin":"3GTU9DEL9LG","components":"ENGINE","summary":"Motor failed with no warning, motor was replaced at a GM dealer for $12,000. Mechanic stated he believed it was a main bearing failure. Not under warranty.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659771,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/08/2025","dateComplaintFiled":"05/08/2025","vin":"3GTU9EETXLG","components":"STEERING,SUSPENSION","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle started pulling to the left, and the vehicle ended up in the next lane. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The vehicle was not repaired. The contact stated that the vehicle had been taken to the dealer six times because of the failure. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 17,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658913,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/05/2024","dateComplaintFiled":"05/05/2025","vin":"3GTP9EEL5LG","components":"POWER TRAIN","summary":"Check engine and ECM errors. The dealer replaced one bank lifter. Shortly after, a similar issue was caused by reassembly. Approximate mileage: 30 K. A month later, the same issue, but this time the vehicle was not drivable, with very low engine power. The dealer stated lifter failure and camshaft damage, engine replaced January 2024, mileage 31 K. Currently 42K and had one instance of ECM error, which only lasted a few seconds, but the engine faltered and lost power. At the most recent oil change, the dealer said no error codes were present. GM indicated that my VIN is not covered under the most current recall. Since the engine was replaced in 2024, there is virtually no possibility that the engine replacement was not a new engine and should fall under this most current recall.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659058,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/19/2025","dateComplaintFiled":"05/05/2025","vin":"3GTP9EEL2LG","components":"ENGINE","summary":"On [XXX] at around noon I was driving my 2020 GMC Sierra northbound on [XXX] 26 miles north of Moab Utah. My truck died and I attempted to coast to the next passing lane but did not make it. The shoulder was about 3 feet wide and then had a steep drop off. I pulled over as far as I could but the majority of my truck and trailer was still in the only northbound lane. The northbound traffic was forced to cross over the double yellow into the oncoming southbound traffic. The concern was getting rear-ended by northbound traffic behind me or a head-on collision with the northbound traffic veering into southbound traffic. I made several attempts to restart the truck and the dash just goes blank with no attempt from the starter. We waited for a tow-truck and about an hour into this wait Utah Highway Patrol arrived and parked behind us with his lights on warning traffic from both directions. There were no precursors to this failure or notifications. I didn\u2019t even hear any noises. There was no physical damage or any leaking fluids. It just quietly stopped.  John Elway Chevrolet informed me the bearings failed and the engine seized. I wanted to keep the core for evidence due to learning about the numerous catastrophic failures of the L87 engine I had. Keeping the seized core was going to cost me double the cost of a rebuilt one ($7000). When I asked the service Manager, Ben why its twice the cost? He said, \u201cGM doesn't want you keeping the core and they can set whatever price they want .\u201d I have had this truck since it was new (6 miles) and noticed unusual oil consumption early on. I would never make it to the next oil change without having to add oil, even with the very first oil change. I inquired about this with the dealer and told this extreme oil consumption was normal and given Bulletin 01-06-01-011M. I did not involve my insurance because they do not cover engine failure. I paid $12,653.97 for a remanufactured long block. Of that was $2469.93 was for parts not need  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11659060,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/07/2025","dateComplaintFiled":"05/05/2025","vin":"1GTP9EEL0LZ","components":"SEAT BELTS,ENGINE","summary":"Our middle seat belt has stopped working in the back seat- we have not had it replaced yet. No damage was done on it by us, but will not click into the buckle.  Driving on the hi-way engine started making awful noises.  We pulled over and had the truck towed to Royal Moore GMC in Hillsboro Oregon as we didn't want to cause any more harm to the engine.  Royal Moore GMC informed us the engine rod bearing failed on [XXX], leading to breaching of the engine block by the rod. This caused us to replace the entire engine at the cost of over 13,000$ and no vehicle for over 3 months. (Along with engine replaced they told us we had to replace the O2 sensor as the light came on after the engine was replaced).   We had to take a hardship loan to get the engine replaced, and had the truck back for 1 day before we had a o2 error l light came back on. At this time (May 5th) we are still waiting for our truck back.  Royal Moore doesn't know why the engine light is on- and contacted TAC for GMC.  We also contacted GMC multiple times when we were waiting for the engine.  They have offered no help to us besides empty promises to call us back later.  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658829,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/20/2024","dateComplaintFiled":"05/04/2025","vin":"3GTP9EEL0LG","components":"ENGINE","summary":"I was driving on the frontage road that enters the freeway when then engine suddenly failed and stalled. It lost power and seemed like it was misfiring. All the warning lights on the dashboard came on as this happened but there were no warnings lights, messages, or symptoms before this happened.  The sudden loss of power posed a risk to my safety  because it could have caused a crash or left me stranded.  I had my vehicle towed to the Freeway Chevrolet dealer in Chandler, AZ where they inspected the vehicle and confirmed the engine had a camshaft and lifter failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658708,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2025","dateComplaintFiled":"05/03/2025","vin":"3GTU8DED5LG","components":"ENGINE","summary":"Engine Lifters failure. Problems with Dynamic Fuel Management System","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658438,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/31/2020","dateComplaintFiled":"05/02/2025","vin":"3GTP9EEL3LG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that occasionally while driving at various speeds, several unknown warning lights remained illuminated, and the vehicle lost motive power. The vehicle was taken to a local dealer to be diagnosed, and the contact was informed that DTC: P0016 was retrieved, and it was confirmed that the engine had failed and needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The contact expressed a concern that the remedy was the same engine that was prone to failure. The manufacturer was notified of the failure. The approximate failure mileage was 150,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658495,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/01/2025","dateComplaintFiled":"05/02/2025","vin":"3GTP8FED0LG","components":"POWER TRAIN,ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"I have taken my vehicle to 3 seperate mechanics (GMC, AAMCO and Independent). They all agree that my valve body inside the transmission must be replaced. The problem is that valve bodies are on a national back order and cannot be fullfilled for months, putting my transmission at risk for further failure. Reading online forums, there are many GMC owners facing this same issue. The mechanics at GMC are requesting that I change out my entire transmission, since that will be a quicker solution than waiting months for that valve body. Now, I am being told that they are having difficulty locating an original manufactured transmission. This puts me in a serious bind because my truck is my only vehicle and there are no valve bodies or transmissions to fix this issue. My truck is only a 2020 and I just surpassed 100k miles. There were no dashboard warning lights that indicated my trucks problem. Only the fact that my truck is shuddering when shifting gears and that a diagnostic tool had to find the source of the problem. This problem started about 5 months ago and has progressivly gotten worse.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11658119,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/01/2023","dateComplaintFiled":"05/01/2025","vin":"1GTU9FEL9LZ","components":"ENGINE","summary":"1) Complete Engine Failure. Vehicle is no longer is in possession for inspection but pictures and video can be provided. 2) My Truck stalled at 70 MPH going down the interstate. I was lucky to be driving in the right lane to glide to a complete stop. This could have been way worse, not just for myself but for others. 3) Shortly after the loss of propulsion on the interstate. The engine started knocking very loud and I brought it into Boucher GMC of Brookfield. After about a week, the conclusion was I needed a new Engine. The Bearings, camshaft, rods and other components within the engine were damaged. The dealership said it was because of Bad Oil. 4) Parts were inspected and Dealership provided pictures. Not sure what they did with the junk parts. 5) I initially brought in the vehicle where it was purchased at Kunes of Stoughton WI for a Check engine light that read a P06DD error code at 56472 miles on the truck. They performed a software update and sent me on way. Since then,  I was dealing with a on and off engine light which eventually brought me to a engine replacement at about 70,000 miles. None of this was covered under warranty and I had to pay for all of this out of pocket.  In the events of all this. GMC had my truck for about 3 months. I had to purchase another vehicle because it was cheaper then renting one, GMC didn't have a loaner I could use. I could not perform my everyday work tasks besides getting to and from work, because I did not have a truck to carry my everyday work tools. Now understanding the full impact of this faulty engine and that I could have done harm to others or my self, has me worried about driving a GM vehicle.   After I received the new engine, approximately 2000 miles later, The new engine, not rebuilt started making a knocking noise, only to find out, it was the same issue after bringing it to the dealership. No engine lights or nothing. People should be scared to drive a vehicle with the L87 engine from GM.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657874,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2025","dateComplaintFiled":"04/30/2025","vin":"3GTU9DEL5LG","components":"ENGINE","summary":"Shut off in traffic twice","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657881,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/18/2025","dateComplaintFiled":"04/30/2025","vin":"3GTP9EEL4LG","components":"ENGINE","summary":"Engine locked up","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657963,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/03/2025","dateComplaintFiled":"04/30/2025","vin":"3GTU9EET1LG","components":"ENGINE","summary":"3.0 LM2 Duramax engine failed at 91,000 miles. It needs a new engine and they are available with a 2-3 week wait time. The engine failure has been inspected and confirmed by the dealer. No symptoms or check engine lights were on prior to the failure. Problem first appeared 03/2025.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657912,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/16/2025","dateComplaintFiled":"04/30/2025","vin":"1GTR9CED7LZ","components":"ENGINE","summary":"I have had two engine failures within 2 years of buying a new GMC truck. The first occurred at 24,181 miles whereas i found engine failures is an all to common occurrence with these 5.3 liter engines, failures are wide spread, tons of complaints can be found with a simple internet or youtube search. The second engine failure occurred at 45,517 miles, again with lifer falling apart. Several service bulletins have been issues including reworking vehicles on dealers lots to replace faulty components but in my case i had over 16000 miles so they put the same parts in again and did not touch the other side which then failed two years later at  in my case both were attributed collapsed lifter.   This is a safety concern, there is no indication this is about to occur. The vehicle loses power, shakes, instrument panel lights up with various different warning lights. If you are passing another vehicle and this occurs it can be frightening as you have no idea what is happening and why you are no longer accelerating if you are passing some vehicles.  The value of these vehicles is now also diminished, who wants a GM vehicle with two engine failures with 45k miles? No one, because it more than likely going to keep occurring until the engine is damaged beyond repair.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657509,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/29/2025","dateComplaintFiled":"04/29/2025","vin":"3GTP9EEL4LG","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated even though an oil change had been performed within 1,000 miles. The vehicle was taken to the dealer, who diagnosed a failure with the piston O-rings, resulting in damages to the engine. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Action Number: PE25001 (Engine and Engine Cooling). The manufacturer was notified of the failure but provided no assistance. The failure mileage was 79,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657522,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/01/2025","dateComplaintFiled":"04/29/2025","vin":"3GTU9FET7LG","components":"POWER TRAIN","summary":"The transmission is jerking and sometimes it will not shift enough to get out of others ways. Severe slippage in the transmission  I have taken the truck to the shop 3 times for the same issue.  Now they tell me I need a new transmission.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657604,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/29/2023","dateComplaintFiled":"04/29/2025","vin":"3GTP9EEL4LG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while attempting to start the vehicle, the vehicle failed to start. There was no warning light illuminated. The contact pushed the vehicle out of the garage. The vehicle was towed to a dealer where it was diagnosed that the spun bearing had failed. The contact was advised that the engine needed to be replaced. The engine was replaced. The contact stated that recently there was an abnormal sound coming from the engine. The vehicle was not diagnosed or repaired after the most recent failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 40,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657140,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/01/2025","dateComplaintFiled":"04/28/2025","vin":"3GTU9BEDXLG","components":"SERVICE BRAKES","summary":"Brake monitor repair keeps illuminating since 2/1/2025! Replaced all brakes and rotors, yesterday 4/27/2025. now don't drive over 43 mph illuminates, emergency brake illuminates says push brake peddle to disengage parking brake yet parking brake has never been engaged","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657179,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/23/2025","dateComplaintFiled":"04/28/2025","vin":"3GTP9EELXLG","components":"POWER TRAIN,ENGINE","summary":"1. Vehicle automatic transmission failed during routine highway driving. Significant drivetrain vibration and limited gear availability.  Warning lights included: ESC. - Electronic Stability Control TSC - Traction System Control Emergency Brake Fault light Power Steering assist reduced Flashing Yellow Engine Warning light.  2. White exhaust smoke upon arrival at GMC dealership.  GMC technician advised full diagnostic would be required to assess extent of transmission failure and cause of white exhaust smoke.  Service technician subsequently communicated that the engine was \u201cfailed\u201d and would have to be replaced.  Vehicle could not be driven and so full extent of transmission failure could not be assessed UNTIL ENGINE IS REPLACED!?!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11657259,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/23/2025","dateComplaintFiled":"04/28/2025","vin":"3GTU9CED9LG","components":"POWER TRAIN,ENGINE","summary":"Merging onto highway, lost engine power.  Cylinder lifter failed, damaged cam shaft, caused damage to coolant system via metal debris, and engine needs to be replaced.  76,000 miles on vehicle, regularly serviced at dealership. I inspected the parts, and was shown the cylinder lifter that had failed and fragmented as well as the galled cam shaft.  There were no prior indications of impending failure (no hard shifts, jumping, warning lights, etc).  Warning lamps turned on after failure.  I asked the mechanic at the GMC Dealership what caused the failure, and wasn't given a definitive answer.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11656231,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/12/2025","dateComplaintFiled":"04/23/2025","vin":"1GTP9EED6LZ","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"I was about 45 miles or so from home on [XXX]. As I left a business my truck went about 100 feet and the engine stopped working . No warning. Truck was towed to a GM dealer in Wilmington Il.  It was determined the cause was due to the wiring from the engine ECM that  was run over  the top of a very sharp plastic mounting bracket for the ECM. The wire had been cut because of the way this was done at the factory. In addition the fuel pump also needed to be replaced . At the time of this, the truck had 39,140 miles on it. I had no warning this was about to happen. No check engine light went on , etc. Most of my route home is on the highway .  Had this not happened on a side street , I would have been involved in an accident. I ended up paying $865.42 plus towing for this repair I should not be paying for.  The people at the GM dealer told me this has been happening on numerous GM pick up trucks. This is NOT a maintenance issue or an isolated case.   INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11656277,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/23/2025","dateComplaintFiled":"04/23/2025","vin":"3GTU9DED3LG","components":"ELECTRONIC STABILITY CONTROL (ESC),ELECTRICAL SYSTEM","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 40 MPH, the vehicle failed to properly respond. There were no warning lights illuminated; however, the message ESC was displayed. The contact stated that the brakes, steering, and a message to check the trailer brakes was also displayed. The contact pulled over to the side of the road and the brake pedal was depressed several times however, the brakes failed to respond, and the vehicle was difficult to control. The vehicle was towed by AAA and then towed to a dealer however, the vehicle was not yet diagnosed. The contact stated that the brakes were inoperable, and the control center was destabilized. The vehicle was not yet repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline. The failure mileage was approximately 125,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11656171,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/27/2024","dateComplaintFiled":"04/22/2025","vin":"3GTP9EED4LG","components":"STRUCTURE","summary":"Had water leaking into cab of truck.  First incident they stated it was a rear window seal and it was \"repaired\" under warranty. Second incident I was advised it was body panel separation where the cab roof and side body seam was leaking.  It was repaired by sealing with \"body seam sealer.\"  I later read these repairs should have been welded. This was after the warranty expired and I had to pay for it.  I then read on the Silverado/Sierra forum this repair should have been a weld not just \"glued\" is this a safety issue?","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11655565,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/12/2025","dateComplaintFiled":"04/19/2025","vin":"3GTU9FEL0LG","components":"ENGINE","summary":"2020 GMC Sierra \"Denali\" 6.2L engine with only 64,000 all original well maintained at miles -- NO prior issues no unusual sounds or indications of any issues. Vehicle has had timely maintenance regularly.  engine lost power and began shuddering severely. Immediately taken to GM certified dealership upon which charged almost $1600.00 for engine analysis. Diagnosis is cylinder # 5 had lifter collapse which in turn ruined the camshaft. Will have to wait 4 weeks for parts and since GM power train warranty (conveniently) only covers first 60,000 miles the total engine rebuild is out of my pocket. Total price $9,741.11. THIS IS RIDICULOUS AND GM NEEDS TO REPAIR OR REIMBURSE EVERY SINGLE OWNER THAT EXPERIENCES THIS ISSUE IN FULL. I think GM knew about this issues and hopes it will go away but this really pisses me and SHOULD everyone else too.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11655482,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/05/2025","dateComplaintFiled":"04/18/2025","vin":"1GTU9FEL2LZ","components":"ENGINE","summary":"Second engine failure in 8 months. 1st with 97k miles and last after 15k on a brand new 6.2L engine.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654538,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/14/2025","dateComplaintFiled":"04/14/2025","vin":"1GTU9FELXLZ","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 65 MPH, the vehicle briefly started to shimmy. Upon decelerating, the vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 24V797000 (Power Train), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was unknown.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11654330,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/05/2025","dateComplaintFiled":"04/13/2025","vin":"1GTU9FEL5LZ","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"Number 5 cylinder failure. Engined has failed cylinder is scored causing the engine to miss and lock up.  The engine which is a 6.2 l87 is now under investigation for a piston failure causing the engine to lockup. The piston and engine issue has been investigated by my local repair shop and I can provide written and bore scope pictures of the failure. Yes the engine light was on the ESC was disabled and needed replaced and the traction control was disabled also the emergency brake was enabled and then failed","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11653385,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2025","dateComplaintFiled":"04/08/2025","vin":"1GTP9EEL5LZ","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 70 MPH, the check engine warning light illuminated, and the vehicle lost motive power. The contact attempted to restart the vehicle however, the vehicle failed to restart. The contact stated that several nearby drivers assisted with pushing the vehicle off the roadway. The contact stated that the first failure occurred the day after the vehicle was purchased. In addition, the contact stated that the failure had also occurred three times within one week. The vehicle was towed to the dealer where the vehicle was purchased. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 123,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11652117,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/19/2025","dateComplaintFiled":"04/01/2025","vin":"3GTP8DED9LG","components":"SERVICE BRAKES,FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE","summary":"recently when starting truck brake message alert comes across on dash reading brake error, and not to drive above 45 miles per hour and brakes are NOT totally operational, meaning brake pedal has alot of play in it to bring truck to a stop. Have to turn off vehicle , sometimes repeatedly before it apparently resets computer system. This has now occurred four times in last five months. Events and dash warning message very similar to recall issued 3/3/20, but listed as \"complete\" on recall data base. Need to seriously and immediately looked into and corrected!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11651440,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/06/2020","dateComplaintFiled":"03/29/2025","vin":"3GTP8BED4LG","components":"POWER TRAIN,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"Dear NHTSA,  I am filing a complaint against General Motors, LLC (GM) for failing to follow through on a legally binding lemon law settlement and leaving me with an inoperable, unsafe vehicle.  Vehicle Information: \u2022Vehicle: 2020 GMC Sierra 1500 \u2022VIN: [XXX]  \u2022Date of Purchase: [XXX] \u2022Dealership: Diamond Chevrolet Buick GMC  Nature of the Complaint: 1.Vehicle Declared a Lemon: \u2022GM acknowledged that my vehicle was defective and offered a CCP \u00a7 998 settlement on April 18, 2024, for $97,000 plus pre-judgment interest. \u2022Despite accepting the offer, GM has failed to facilitate the buyback or repurchase of the vehicle. 2.Ongoing Safety Hazard: \u2022The vehicle is non-operational and poses a safety hazard due to repeated transmission failures, loss of engine power, steering/braking issues, and limp mode activation. \u2022GM\u2019s delay in replacing the vehicle leaves me exposed to ongoing safety concerns.  Request for Action:  I request that the NHTSA: \u2022Investigate GM\u2019s failure to address and rectify the vehicle\u2019s safety issues. \u2022Document GM\u2019s negligence in resolving safety defects under a recognized Lemon Law claim. \u2022Initiate necessary action to protect consumers from ongoing safety hazards caused by GM\u2019s failure to act.  Please contact me for additional information or supporting documentation.  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11650969,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/31/2023","dateComplaintFiled":"03/27/2025","vin":"3GTU9DEL2LG","components":"ENGINE","summary":"At 59000 miles my lifters were rebuilt on the 6.2 liter engine because of a failure in the 1 and 3 piston. Gm paid for the repairs and then At 79000 miles the motor completely blew resulting in complete failure and seizing the motor and heavy metal chips were reportedly found in oil pan. Gm claimed it was a result of me not doing regular oil changes however I suffer from OCD and I am automotive engineer and my oil was changed early in most cases with my truck. Gm will not take responsibility and at the time they wanted $16k to fix my truck. I was going through a very tumultuous divorce and had to pay atty $34k for that wnd could not pay $16k for a new engine resulting in me having to give my truck back to bank and I have not been able to buy a truck or vehicle since then as it ruined my once perfect credit of 820. It\u2019s changed my life forever and GM should take responsibility. I will never buy another GM product again and my father worked for them my whole life and my family only drove their products.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11650589,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/25/2025","dateComplaintFiled":"03/25/2025","vin":"1GTU9EETXLZ","components":"ENGINE AND ENGINE COOLING","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 70 MPH, the low oil pressure warning light illuminated. The contact pulled over to the side of the road and noticed that the oil level was abnormally low. The contact added oil to the vehicle and continued driving. The vehicle was taken to Mike's Garage, where it was diagnosed that the valve cover was fractured; however, the part to repair the vehicle was on backorder. The contact related the failure to TSB Number: 22-NA-027. The dealer was notified of the failure and informed the contact that the vehicle was not covered under the TSB. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 96,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11650284,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/23/2024","dateComplaintFiled":"03/24/2025","vin":"3GTP9EEL4LG","components":"ENGINE","summary":"The Lifter failure, bent rod, and basically ruined the the cam shaft, the vehicle has had engine replaced and the current engine is now acting up. once again.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11649848,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/01/2025","dateComplaintFiled":"03/22/2025","vin":"3GTU9FEL3LG","components":"UNKNOWN OR OTHER","summary":"Shift to park message appears when in park and engine is turned off. Transmission control had an internal circuit failure. Park not fully engaged and vehicle could roll. Problem confirmed by dealership. Prior recalls for earlier gmc models but not my year.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11649586,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/16/2025","dateComplaintFiled":"03/20/2025","vin":"3GTP9EEL4LG","components":"ENGINE","summary":"While driving our 2020 Sierra AT4 down the highway at 65 mph, the engine suddenly cut out and started sputtering. Every light came on. We pulled off the highway and had the truck towed.  Our highly trusted, family mechanic company diagnosed lifter 5 was twisted and stuck, along with another stuck lifter. The cost to replace the engine was one hundred dollars more than repairing the two lifters.  They purchased a new engine through Van Chevrolet and were surprised the cost had recently decreased from $7-8k to $3900, to purchase a rebuilt engine.  The engine appeared to be new, with the bolt threads unused. The new engine comes with a 3year 100k mile warranty through the dealership. We called GM, they said since we went to another mechanic they would not speak with us.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648750,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/10/2021","dateComplaintFiled":"03/17/2025","vin":"3GTP9EEL9MG","components":"ENGINE","summary":"The engine, while driving down the road, incurred a failure to the pusher rod in the #5 cylinder.  This occurred at 6750 total miles on engine.  Engine failure was repaired by a dealership.  The failure occurred again at 99,500 miles to the same #5 cylinder causing major engine damage leading to the replacement of the engine. Our safety was put at risk as the truck decelerated and began vibrating.  The second failure occurred and the engine shutdown.  These incidents occurred without warning, Yes, a dealer was involved in both incidents. Only a dealership has been involved. The warning occurred after the failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648413,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/22/2025","dateComplaintFiled":"03/14/2025","vin":"1GTU9DEL7LZ","components":"POWER TRAIN,SERVICE BRAKES,ENGINE","summary":"-Transmission valve body Failure, Wheel lock up, ABS Event, Loud Bang and a Flashing \"D\" on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or 8-6 Downshift -When all four tires lock up at a high rate of speed, this puts the driver, the passengers, and all others on the road at risk for injury or death. -Yes, the problem has been found in a document by my local dealer that this issue was added to my exact vehicle's service manual on 11/27/24. The document describes in detail the exact scenario I have been involved in multiple times. It is deemed as #21-NA-275. It locks up the tires randomly to the vehicle in mid acceleration at any speed including 80 miles per hour in one instance for me. -Yes, the dealership inspected it and found the issue to correlate with the newly added section to the service manual, 13333166. This document ID is 5925530 and the added information to the dealership is #21-NA-275. The GMC manufacturer has been contacted as of 3PM MST 3/14/25.  Insurance doesn't deal with mechanical problems. The police will only be involved when there is death or injury. -No. The only warning that happens is simultaneously as the vehicle locks up the tires causing the driver (me) to inevitably try to save myself and others, swerving and trying to focus on not hurting myself or others but I did notice the \"D\" flash on one of these occasions.  This is the most dangerous issue with a vehicle I have ever even considered. At any time, for any reason, all four tires can lock up at any rate of speed and cause multiple casualties. The way to fix this is to spend $3,000 which I am sure many people like myself do not have. This means there are thousands of these exact make and models of vehicles on the road right now. Please do not take this lightly as I have almost crashed multiple times with people in my vehicle due to no fault of my own.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11648068,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/30/2023","dateComplaintFiled":"03/13/2025","vin":"3GTU9DED7LG","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while accelerating from a complete stop, the vehicle lunged forward. The contact stated that the failure recurred while driving at various speeds depressing the accelerator pedal, and while decelerating to come to a complete stop. The check engine warning light was illuminated. Additionally, the contact stated that while coming to a complete stop at a traffic light, the vehicle lunged forward violently, as if the vehicle had been rear-ended. The vehicle was taken to Quality Plus Automotive, where it was diagnosed that the transmission had failed and needed to be replaced. The local dealer, Leith GMC (919) 366-1000), and other dealers were contacted and informed the contact that an estimate for the repair could not be provided because the transmission part was not available. The vehicle was repaired by Quality Plus Automotive. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 75,450.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11647333,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2025","dateComplaintFiled":"03/10/2025","vin":"3GTU9CED1LG","components":"POWER TRAIN,UNKNOWN OR OTHER","summary":"The Transmission cooler lines broke and spilled out all the oil/fluid on my 2020 GMC Sierra Elevation pick-up truck. Once all the fluid was spilled out the Sierra truck would no longer move. The Sierra truck was towed to the dealership I originally purchased the vehicle. The dealership was Cranbury Buick GMC. The dealership mentioned that the hoses broke/leaked from the crimped housing at the ends of the hoses. The dealership stated that the original OEM transmission cooler line hoses were discontinued and new OEM replacement transmission cooler line hoses were created. Please see the attached dealership bill/invoice for the parts and labor to fix the cooler line issue. I feel this issue should be a recall on all 2020 GMC Sierra trucks, especially if GM replaced the original OEM hoses with newly created OEM hoses   Thanks [XXX]    INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11647175,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/26/2025","dateComplaintFiled":"03/08/2025","vin":null,"components":"POWER TRAIN,SERVICE BRAKES","summary":"Vehicle shifting poorly, and I have had a bunch of brake and rotor issues.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11646652,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/03/2025","dateComplaintFiled":"03/06/2025","vin":"3GTU9BET0LG","components":"ELECTRICAL SYSTEM","summary":"Had GMC (Leominster, MA), perform the safety recall for the transmission on my Sierra. This is the one for the rear wheel lockup that requires a software update.   My battery was completely dead after the vehicle sat for a week. No accessori s plugged in, and it's a 6 month old battery   Battery tested fine and is charging now, but it appears the CPU never fully powered down after the software update, resulting in needing multiple jump starts and 3+ hours of run time to charge the battery enough to turn over on its own.  I can see this being a safety issue in relation to the Auto-start, because when it is being used, the battery is needed to restart the engine. This could result in a stall at an intersection, and if drivers are not alert, may collide with a stalled vehicle.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11646779,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/06/2020","dateComplaintFiled":"03/06/2025","vin":"3GTU9DED6LG","components":"PARKING BRAKE,STRUCTURE,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the parking brake independently activated. In addition, the contact stated that the vehicle had an oil leak from the oil pan. The contact stated that the oil needed to be added every two days. The contact stated that the alert system warning light was illuminated. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact was informed that the failure could not be duplicated, because no active codes were retrieved. In addition, the contact stated that the frame had corrosion. The vehicle was taken to the dealer for the corrosion failure, however the contact stated that the previous dealer had failed to help. The dealer confirmed the corrosion; however, the vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 10,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11646611,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/23/2025","dateComplaintFiled":"03/05/2025","vin":"3GTP9EEL1LG","components":"POWER TRAIN,ENGINE","summary":"Lifters failed and cam shaft was busted. Standard issues with 6.2L engines. Was traveling down highway and vehicles was shaking violently. Inspection report available. Has been inspected by GM service center. No symptoms or warnings prior to failure.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11644408,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/23/2025","dateComplaintFiled":"02/23/2025","vin":"3GTU9EET6LG","components":"ELECTRICAL SYSTEM","summary":"While driving on interstate transmission would \u201clock up\u201d momentarily creating drastic drop in speed and unable to shift gears and accelerate. \u201cD\u201d would start flashing in dash board. Dealership said this is unrelated to current recall about rear wheels locking up from valve body failure and instead this is an electrical issue. Dealership also stated this is the 2nd truck in a week they have had come in with this issue. Almost caused accident on interstate with my family and I as a result of sudden drop in speed and unable to accelerate with multiple cars behind us.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11643561,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/18/2025","dateComplaintFiled":"02/18/2025","vin":"3GTU9DEDXLG","components":"STRUCTURE","summary":"Tailgate opened on highway with cargo in bed. Also tailgate opens randomly when parked. This has happened many times, creating very dangerous and unexpected situations  Numerous contacts to the manufacturer have been unsuccessful in getting the hazard placed on recall. Numerous incidents. Keeps happening","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11643258,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/18/2024","dateComplaintFiled":"02/17/2025","vin":"3GTP8DED8LG","components":"ENGINE","summary":"My engine has had continual random piston misfire issues, I have changed the spark plugs, fuel injectors, and cat converter. The vehicle has \"dynamic fuel management\" (DFM) where four of the cylinders turn off when the load on the engine is low and turn back on when the load is high. A mechanic reviewed the vehicle and determined that all eight cylinders are turning off while driving due to the DFM. When it misfires there is momentary loss of power that potentially puts others at risk. A dealership performed a repair per a Bulletin but the issue was not fixed. The mechanic indicated this is a software issue with the computer update per the Bulletin.   I have installed a DFM disabler to prevent DFM from working, don't have misfires, but this is an engineering issue that GM hasn't/won't address.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11642682,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/13/2025","dateComplaintFiled":"02/14/2025","vin":"3GTU9FEL5LG","components":"STEERING","summary":"I went to start my truck after going into the store and the Service Power Steering ESC warning came on and I had no power steering. This is a very dangerous situation without power steering in the vehicle and someone is bound to get seriously injured if this happens while they are driving.  I have read numerous threads on this same issue and it does not look like GM has taken this into accounty by recalling all these vehicles with this same exact issue. While most complain that when they take it to the dealership, they cant find any error codes, or when the replace the modules it starts creating more issues with other electronics.  GM needs to take care of this issue with the power steering module so the safety of their drivers is not compromised.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11642855,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/14/2025","dateComplaintFiled":"02/14/2025","vin":"3GTP9EED0LG","components":"STEERING","summary":"The ESC comes on and loss of power steering","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11642503,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/05/2025","dateComplaintFiled":"02/13/2025","vin":"1GTP9EED6LZ","components":"ENGINE","summary":"The engine failed. There was no warning. The truck literally just cut off in the middle of the road. I never saw any lights or there was no symptoms to lead up to this incident.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11642238,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/07/2025","dateComplaintFiled":"02/12/2025","vin":"1GTP9EEL0LZ","components":"TRACTION CONTROL SYSTEM,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving 65 MPH, the check engine and the traction control warning lights illuminated. The contact stated that a dealer was contacted. The vehicle was taken to a dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that he would receive a callback. The approximate failure mileage was 87,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11641886,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/01/2024","dateComplaintFiled":"02/11/2025","vin":"1GTU9EET6LZ","components":"ENGINE","summary":"At 125,000 miles, the CEL came on and the code is P0016, which is for the timing chain has stretched and jumped a tooth.  The engine was new in 2019 and in 2021, they redesigned the timing chains due to early failure.  The oil pump belt is listed for inspection/replacement at 150,000 miles, but the timing chain does not give any interval for replacement and should easily outlast the oil pump belt to at least 250,000 miles.  GM knows that there is a timing chain issue with the 3.0 Duramax LM2 engine and it is costing owners between, $7,800 and $10,000 to repair.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11641672,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/10/2024","dateComplaintFiled":"02/10/2025","vin":"3GTU9CED9LG","components":"POWER TRAIN","summary":"GM 10L80 Speed Transmission Pump Idler Gear Failure causing erratic shifting, lurching, or being stuck in gear. Dealer confirmed and recommended to replace the transmission. Transmission was replaced out of pocket in December. The issue is widespread on youtube.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640735,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/04/2025","dateComplaintFiled":"02/04/2025","vin":"3GTP9EEL4LG","components":"ENGINE","summary":"Wife and I bought a truck from Serra Chevrolet on May 28 2024. We drove 180 miles and the engine blew up. Had it towed to another dealership in Louisville Kentucky at that point they replaced the engine. When we picked up the truck we had to pay $16,275.08. We contacted Gm and was told that the selling  dealership should have taken it off of being certified pre owned but they didn\u2019t.  Was told they know to do it to future vehicles and there is no reimbursement .  Gm website still has it listed of have a warranty till December 2025. We had 3 weeks of a truck rental at roughly $1,200.00 per week. Had another rental for another. 3 weeks I have paper work from a local dealer stating it still has warranty which would have covered complete expense of engine work We live in Ohio and had to travel back and forth 6 times. Hope there is some help for us.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640394,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/03/2024","dateComplaintFiled":"02/03/2025","vin":"3GTU9FELXLG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving 80 MPH, the vehicle lost motive power and stalled. The vehicle regained power within seconds and the contact was able to continue driving. There were no warning lights illuminated. The contact stated that the failure reoccurred. The vehicle had not been taken to the dealer to be diagnosed or repaired. The manufacturer was made aware of the failure and confirmed that there was no recall on the VIN for the failure. The failure mileage was approximately 50,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640437,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/21/2025","dateComplaintFiled":"02/03/2025","vin":"3GTP9EEL4LG","components":"ENGINE,LANE DEPARTURE,FORWARD COLLISION AVOIDANCE","summary":"I have had no issues with my vehicle since I purchased it in July 2022 and keep up with the routine maintenance on it. About 2.5 weeks ago I was driving to work like I normally do and the truck started making a knocking noise and all these sensors lights came on the dash. The alerts were saying to service the parking brake, service ESC, and that steering assist is reduced and to drive with care. The vehicle also started shaking and would not accelerate properly or shift gears. We ended up taking it to the closest GMC dealership and they were in able to diagnose it just by simply hooking it up, they had to fully dismantle the engine in order to diagnose it. They came back and said cylinder number 4 is damaged as well as the lifters and cam shaft. I am no car expert but it is weird that a car that is relatively new and has the maintenance kept up on it should not experience a serious malfunction like this. What is even weirder is my sister in law has a 2020 Chevy Silverado where the almost identical thing just happened to theirs and it too is now in the show as well needing its engine and stuff repaired.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11640028,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/26/2025","dateComplaintFiled":"02/01/2025","vin":"3GTP9EEL1LG","components":"UNKNOWN OR OTHER","summary":"Water entering from the rear window causing rear seats and roof hard cover to get wet and cause a wet odor (humid).  2020 GMC 1500 AT4","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639339,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/04/2024","dateComplaintFiled":"01/29/2025","vin":"3GTP9EEL7LG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving and decelerating from 65 MPH to 15-20 MPH to make a turn, the engine made an abnormal knocking sound. The contact was able to drive to the residence. The dealer was notified of the failure. The vehicle was towed to Pechous Repair to be diagnosed. The contact was informed that the engine was blown and needed to be replaced. The vehicle was repaired. The contact later became aware of NHTSA Action Number: PE25001 (Engine, Engine and Engine Cooling); which the contact related to the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 64,298.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639046,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2024","dateComplaintFiled":"01/28/2025","vin":"1GTP8DED1LZ","components":"UNKNOWN OR OTHER","summary":"Shift to park error message to turn vehicle off when already in park.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11639026,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/17/2025","dateComplaintFiled":"01/28/2025","vin":"1GTU9FEL8LZ","components":"FUEL/PROPULSION SYSTEM","summary":"2020 GMC Sierra Denali \u2013 VIN [XXX]   On [XXX] while driving the 2020 GMC Sierra to work I noticed a strong gasoline smell inside the cabin.  I immediately returned home and parked the truck in the street.  Inspecting the driveway where the truck was parked over night, I notice large gasoline spot. The following day I had the truck towed to Boyds Tire & Service center to have the truck inspected.  On January 20 Boyds called me and shared the truck had experienced a failure of the High-Pressure Fuel Pump which has been recognized by GM as a recall under N192283991.  I called a local GMC dealership about this failure and they stated it would cost $300 to review and would not perform any work under a recall.  Also, the dealership stated they could not service the truck for another two weeks, which I cannot be without the truck that long.  So, I had Boyds perform the repair the same day.  Unfortunately, GM has not listed my truck on this recall.  This is the reason for my submittal and request for a full refund of the repair service due to the failed part.  This being a very High Risk of Fire and injury and death, I decide to have the repair completed immediately.    I have since contacted GM about this incident they will not consider my request for recognizing and reimbursement for service repair.  GMC, Case number [XXX]  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11638263,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/07/2025","dateComplaintFiled":"01/24/2025","vin":"3GTP9CEK0LG","components":"STEERING","summary":"On 01/07/2025 I got in my truck to take it to GMC for an oil change and 75,000 mile service. When I began to drive I noticed I could barely turn the truck at all. The power steering was not working. Then a warning popped up to have the power steering serviced. The GMC dealership is an hour from my house. The entire drive the power steering didn't work. I explained what was going on to the GMC dealership and when they went to look at the truck the power steering was working again. When I left the dealership the power steering was working. I stopped at a friends house for about an hour and when I went to leave the power steering was not working again. I ended up having to drive an hour again with no power steering and made an appointment with GMC to get the power steering looked at. Currently they haven't commented on the Power Steering function but rather that there is a gear needing to be replaced in the steering column. Upon looking online it shows \"Several model years of GMC Sierra trucks have been subject to a recall for intermittent power steering issues related to electrical glitches within the EPS system.\" However, my truck seems to not be on this list of affected vehicles but there is no other explanation of why this is happening with my truck and GMC has not commented on why it is happening but it is extremely dangerous.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637894,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/20/2024","dateComplaintFiled":"01/23/2025","vin":"","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while accelerating from a stop light, the rear wheels seized. There were no warning lights illuminated. The vehicle was diagnosed by a mobile mechanic with transmission failure. The vehicle was towed to the residence. The dealer was informed of the failure. The contact was informed by the dealer that the repair was not covered under warranty due to the mileage. The vehicle had not been taken to the dealer. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 82,000. The VIN was not available.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637990,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/08/2025","dateComplaintFiled":"01/23/2025","vin":"3GTU9FEL0LG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"On January 8th I was driving when my 2020 GMC Sierra 1500 Denali started to misfire as well as several warning lights blinking. I happen to be a couple miles from the dealership I purchased it at so I drove it straight there. A few days later I was notified it was the lifters that went bad and it would cost $5400 plus tax. This is disturbing since I have only had my truck for a little over 4 years with 68,000 miles on it. After researching the problem it appears that its a common issue and I notices a class action lawsuit for this reason. Since it's not recalled currently I'm stuck covering the invoice. Before the problem happened my truck was driving normal and no warning lights came on. This needs to be investigated so the consumer isn't stuck paying for something that is an obvious GM issue .","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11638037,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/25/2024","dateComplaintFiled":"01/23/2025","vin":"3GTP9EEL1LG","components":"POWER TRAIN,ENGINE","summary":"Motor seized at 52,000 miles....  replaced motor... at 72K miles, lifters and rods had to be replaced on the 2nd motor.  Transmission also failure at 72K, being replaced.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11638066,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2025","dateComplaintFiled":"01/23/2025","vin":"3GTU9DET6LG","components":"POWER TRAIN","summary":"See attached document for complaint.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637570,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/17/2025","dateComplaintFiled":"01/22/2025","vin":"3GTU9DED8LG","components":"ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE","summary":"Driving down highway at 60 mph and truck shut off.  had to try to get it over to the shoulder to off the travel lane.  Dealer found wire harness chaffed at front left shock tower ECM bracket.  Several wires damaged, repaired and cleared codes.  This could have been much worse had I been in heavy traffic and needed to cross additional lanes of traffic to park in a safe area. I had no power steering and limited space to park the truck.  I called to police to have a car dispatched to park behind me so the truck could be loaded on a tow vehicle to bring it to the dealer. This could have been worse had my wife been driving.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637822,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/11/2024","dateComplaintFiled":"01/22/2025","vin":"1GTU9FEL9LZ","components":"POWER TRAIN","summary":"The truck was dropped off on November 11th of last year due to a valve body failure, and I\u2019ve been informed that repairs cannot be completed because the necessary parts are unavailable. I purchased the truck in late August of last year and am now stuck making payments on a vehicle I can\u2019t even drive. When I approached the GMC dealer about trading it in or having them buy it back, they said trading it in was an option but couldn\u2019t offer anywhere near what I paid. To make matters worse, they have no timeline for the repairs, and buying it back isn\u2019t an option.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637242,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/22/2024","dateComplaintFiled":"01/21/2025","vin":"3GTU9EET9LG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"I had Engine Failure in June 2024 with roughly 50,000 miles. I was getting on I75 North in Auburn Hills, MI, when I heard a loud pop. The vehicle began shaking violently with a loss of engine power warning displayed, loss of oil pressure displayed followed by 2 successive limp mode warning. The vehicle would not drive over 25 MPH. Luckily the next exit was only a mile down the road. I was able to drive on the shoulder of the Interstate to get off of the highway. When I parked the vehicle shortly after, I viewed oil spewed all over the engine bay and under the truck. I then waited 4 hours in 95+ heat for a tow truck. The engine was replaced by the dealer with no root cause identified or communicated to me. There were no warning prior to this failure. The vehicle has had over 13 warranty related issues including the DEF heater melting, CAC pump failure, Numerous Exhaust Leaks, NOX and EGR sensors failing, brake control module faults etc.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11637297,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/07/2025","dateComplaintFiled":"01/21/2025","vin":"3GTP8DED6LG","components":"LANE DEPARTURE","summary":"ADDITIONAL INFORMATION RE ODI 116346689: Tried to report to GM using 800-462-8782 provided by you. Agent would not accept ANY information that I tried to provide, including year/make /model and would not confirm or deny that the issue was known by them. Agent said that the dealer would report their inability to fix the issue directly to GM, and that I could not. I have no way of knowing if the dealer made this report to GM. Calling this number was an infuriating, complete waste of time.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11636793,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/06/2020","dateComplaintFiled":"01/18/2025","vin":"3GTP9EEL2LG","components":"STEERING,ELECTRICAL SYSTEM,ENGINE","summary":"On [XXX], I was driving my truck on [XXX]  through Phoenix, AZ. It was 5 days after I had purchased the vehicle and only had 250 miles on the odometer. I was in the left lane was traveling at approximately 75mph. Within the span of about 20 seconds, several lights on the dash annunciated and several messages including a message about a brake failure and steering assist failure and then the engine suddenly turned off. The steering seemed heavy and the brakes seemed less responsive. I was able to coast to a stop on the side of the road thanks to the help of a couple truckers who blocked traffic across multiple lanes. The truck was towed to the dealer and they told me the entire engine needed to be replaced. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11634689,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/23/2024","dateComplaintFiled":"01/07/2025","vin":"3GTP8DED6LG","components":"LANE DEPARTURE","summary":"The contact owns a 2020 GMC Sierra. The contact stated that while driving at speeds over 38 MPH, and the Lane Departure Warning System was activated the seat indicator did not vibrate or sound an alert as intended. The vehicle was taken to the dealer where the software was reset but the failure persisted. The manufacturer was not notified of the failure. The failure mileage was 47,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11632887,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/26/2024","dateComplaintFiled":"12/28/2024","vin":"1GTU9BED1LZ","components":"FUEL/PROPULSION SYSTEM","summary":"GDI fuel pump went bad needed replacement.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11630888,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/16/2024","dateComplaintFiled":"12/16/2024","vin":"3GTU9FET3LG","components":"POWER TRAIN","summary":"The contact owns a 2020 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 contact stated that there was a loud clanking sound underneath the vehicle while starting the vehicle. There were no warning lights illuminated. The vehicle had been taken to the dealer and was diagnosed with transmission failure. The contact stated that the transmission had been repaired twice however, the failure persisted. The vehicle was taken to the dealer again and the transmission was replaced. The dealer was contacted about the recall and confirmed that the VIN was included in the recall however, the part to do the recall repair was not yet available. The manufacturer was not made aware of the issue. The failure mileage was 50,000. Parts distribution disconnect.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11630330,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/01/2021","dateComplaintFiled":"12/12/2024","vin":"1GTR9BEK6LZ","components":"BACK OVER PREVENTION","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while reversing the vehicle, the rearview camera image failed to display as needed, and the radio was inoperable. The vehicle was taken to the dealer, but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 3,500.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11629954,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/12/2024","dateComplaintFiled":"12/10/2024","vin":"3GTU9CETXLG","components":"SERVICE BRAKES","summary":"My pickup was specifically purchased to pull a duel axle trailer ( brakes required by Fl. Law). The trailer weights more than the pick up.  They stopped working with the electric /hydrolic Trailer brake system.  I have had the Sierra in three times for Warren Ty repair.  They never fixed the system.  I have thoroughly test the trailer system - it works fine with another pickup. Dealer won\u2019t return my calls.  Multiple trips taking it in for this problem. Have a case filed with GM. All just placating me, now ignoring my problem. I am stuck and they are not acting in good faith.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11628822,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/23/2024","dateComplaintFiled":"12/04/2024","vin":"1GTP9EEL5LZ","components":"POWER TRAIN,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM","summary":"Shuttering while in motion at a speed of  35mph or above. My 2020 GMC SIERRA 1500 AT4 CarbonPro while driving at or above speeds of 35mph experiences a hesitation and severe Shuttering while trying to maintain any speed of 35mph or above. The hesitation causes extreme vibrations and hesitation when lifting or applying foot to the accelerator. This happens in any drive mode also with cruise control on or off as well as shifting into low and being in any gear trying to prevent it. It also does this on any road and condition. It feels like a slip in the transmission or torque converter, possibly could be the rear end or variable valve timing as well. And when taking of from a red-light or stop sign it slips as if the truck has lost traction, but it hasn't. This is very dangerous and could be the cause of a serious accident when trying to accelerate. If your traveling at hwy speeds it feels as if the brakes are being applied and the tires are going over a washboard which could cause a collision, tire wear, or driveline damage.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11628811,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":1,"numberOfDeaths":0,"dateOfIncident":"12/01/2021","dateComplaintFiled":"12/04/2024","vin":"1GTP9EEL5LZ","components":"ELECTRICAL SYSTEM,STRUCTURE","summary":"Tailgate releases on its own while parked, without the use of the switch. Tailgate released on its own with my trailer attached while parked on many occasions. The result of the Tailgate releasing caused damage to the upper section of the Tailgate, the \"kicker speaker system\" in the Tailgate and Tailgate switch located on the upper section of the Tailgate. There also have been multiple times when attaching the trailer that the Tailgate has released and struck me in the head. The Tailgate also fills with water during rain, and carwashes. The damage caused by the Tailgate releasing is a dent on the upper section of the multi-pro Tailgate and rust and malfunction of the \" kicker speaker system \" as well as the occasional hickey and headache on my head. The Tailgate has filled up with water since I purchased it new in December of 2020 which I believe has been electricly shorting the Tailgate switch/button releasing the Tailgate randomly. Due to my particular 2020 GMC Sierra 1500 AT4 CarbonPro having the \" kicker speaker system \" in my opinion makes the Tailgate so much heavier than one without it that it made the damages such as the dent in the face above the Tailgate switch much worse than trucks without it also causing more water to enter the Tailgate causing more damage to the switch and components of the \" kicker speaker system \", such as the amp and buttons for it not to mention my head on several occasions.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11625218,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/14/2024","dateComplaintFiled":"11/14/2024","vin":"3GTP9EEL9LG","components":"ENGINE","summary":"The contact's son owns a 2020 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle shut off without warning. The contact stated that the vehicle was restarted and resumed normal operation moments after the failure. The contact stated that the failure recently started occurring more frequently. The manufacturer was notified of the failure and the contact was provided a case number. The contact was referred to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 40,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11623111,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/28/2024","dateComplaintFiled":"11/01/2024","vin":"3GTU9CET7LG","components":"POWER TRAIN,ELECTRICAL SYSTEM,ENGINE","summary":"DEF Emissions warning and Engine Emissions warning lights suddenly appeared. DEF Emissions warning went on and off multiple times in the two days before bringing to a GMC service location. Informed that the DEF Tank heater failed, a known problem, but that they likely would not have a repair available for over a month and would not be covered by any warranty. The vehicle is now speed limited to unsafe speeds on highways while waiting for the repair.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11619607,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/15/2024","dateComplaintFiled":"10/14/2024","vin":"3GTP8CED5LG","components":"POWER TRAIN,UNKNOWN OR OTHER","summary":"There has been a recall on the 2020 sierra 1500 for the driveshaft which causes shuddering and vibration which my vehicle is exibiting but my vin is not on the recall list","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11619466,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/12/2024","dateComplaintFiled":"10/12/2024","vin":"1GTR9CED9LZ","components":"POWER TRAIN","summary":"Transmission failed at 75,000 miles, yes it is available for inspection.  Truck went into limp mode on the highway and turned into a very dangerous situation, I was barely able to exit the highway.  Yes the dealership Martys GMC in Kingston MA has confirmed that it is transmission failure.  My vehicle has been sitting on the lot of Marty's GMC since September 13, 2024 waiting for a backordered part to fix the transmission at an estimated cost of $2,500.  The warning check engine light followed by every single lamp on the dash appearing on [XXX] which is the date of transmission failure.  After careful research of this issue I have found this is a widespread problem with this particular 10 speed GMC transmission in my 2020 GMC Sierra that I am still paying car payments on.  I have rented a vehicle at my own cost for the past 4 plus weeks to get back and forth to work.  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11619484,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/12/2024","dateComplaintFiled":"10/12/2024","vin":"3GTP9EED9LG","components":"POWER TRAIN,ENGINE,FORWARD COLLISION AVOIDANCE","summary":"At 103,000 my 2020 AT4 5.3L V8 had a P0307 code thrown.  Cylinder 7 misfire.  Driving highway speeds, sudden loud pop and then the service engine light came on and automatic braking engaged, and the idle got extremely rough. Ended up being a bad lifter, bent rod, tore lobe off of the camshaft.  Roughly 8,000 for the repair, new cam, new lifters, spark plugs and coil packs.    Now only about 3,000 miles later, driving, sped up to pass on the interstate and another misfire, P0306 this time Cylinder 6. Same symptoms check engine light, automatic braking, rough idle. Seems to be another failed lifter and bent rod.  Currently awaiting diagnostic for this second misfire issue.   When speaking with the tow truck driver and the mechanic both mentioned a significant rise in cases like this.  There is definitely something wrong with the design that the manufacturer needs to be help responsible for. I have less than a month ago replaced all the lifters only to have another one fail again.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11617829,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/12/2024","dateComplaintFiled":"10/03/2024","vin":"3GTU9DET8LG","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while the vehicle was parked and being driven, the vehicle was shaking violently. There were no warning lights illuminated. The contact stated that the failure was related to Technical Service Bulletin: 22-NA-186. The vehicle was taken to a local dealer, where it was diagnosed that the motor mount brackets needed to be replaced. The vehicle was repaired, but the failure persisted. The manufacturer was contacted, opened a case, and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 100,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11617607,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/23/2024","dateComplaintFiled":"10/01/2024","vin":"3GTP9EED7LG","components":"SERVICE BRAKES, HYDRAULIC","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that the vehicle failed to start. The battery was replaced, and the failure was remedied. On another occasion, the contact stated that the brake percentage was low on the instrument panel and that the lights were becoming dim. The vehicle was taken to a dealer where the brakes were replaced; however, the computer failed to detect the repair; and the message \"1 More Mile Left to Drive\" was displayed. The contact also stated that two weeks later while driving 45 MPH, the brake pedal failed to respond and felt abnormally loose. The vehicle was driven over a concrete sidewalk to stop the vehicle. There was no crash, and no injuries were sustained. The vehicle was towed to the residence. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and confirmed that the VIN was not under recall. The approximate failure mileage was 102,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11617620,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/01/2024","dateComplaintFiled":"10/01/2024","vin":"1GTU9DED4LZ","components":"FORWARD COLLISION AVOIDANCE","summary":"On two separate occasions, while traveling at highway speeds with the adaptive cruise control system on, my truck randomly started braking hard as if it was sensing a vehicle or obstacle in front of me but my lane was completely clear.  The most recent time, I was almost rear ended because of this issue.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11615818,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/23/2024","dateComplaintFiled":"09/22/2024","vin":"3GTP9EED7LG","components":"ELECTRICAL SYSTEM,UNKNOWN OR OTHER,SERVICE BRAKES","summary":"My truck 2020 gmc sierra 1500 AT4 denali is not working properly since July 2024. I took it to 2 different dealership to get a diagnostic and i finally ended doing the repairs for brake issues. I have been towed 6 or more times and almost experienced 2 car accidents since I drive the truck after the supposedly repairs where done but i ended stranded again with no brakes. The dealership has repair the truck 3 times but im still getting sevaral codes the fact that i had to pay out of pocket and have to deal with this and expose myself to danger and my family in driving a vehicle that is no safety condition its absurd. I call several times the recall GM hotline and i was told GMC 1500 are included in the recalls just not the AT4 and i have a family member with the same truck and same issues she ended up trading in the truck recently since she kept experiencing the same issues over and over again just like me.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11611486,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/26/2024","dateComplaintFiled":"08/28/2024","vin":"3GTU9CED1LG","components":"ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,SERVICE BRAKES","summary":"My brakes failed 2 times. One time I almost got into a horrible wreck with my daughter in the truck. \"Brake system failure\" \" max speed 43mph\" I have not had any brake work or anything done. The dealer is trying to charge me to replace the whole brake system  when [XXX]  this says to reprogram. Still waiting on gmc to tell me if it's covered under warranty. From my own research this has been a major problem for hundreds of people if not more. I could have died because of a faulty brake system or a bad software update. I need help with this and so do the countless other 2020 gm owners. There is a recall on the 2019 for the exact problem but not the 2020s.  GM safety recall N192268090 please advise  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11610388,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/23/2024","dateComplaintFiled":"08/23/2024","vin":"3GTP9EEL3LG","components":"STEERING","summary":"Without warning power steering went out. Flashed code: service power steering; service esm and traction control light. After two restarts, went away like it never happened. I was backing a 24 ft trailer at the time of occurrence. There are numerous other people with the same problem in online forums. I cannot believe that there has not been a recall or even service bulletin regarding this problem. It is a MAJOR safety concern","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11604873,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/20/2024","dateComplaintFiled":"07/27/2024","vin":"1GTU9CED7LZ","components":"POWER TRAIN","summary":"The AFM/DFM system in these trucks are making the engines and transmissions go out around 70k miles. The lifters fail right around the same time factory warranty runs out then your left with a 6 thousand dollar bill to have it fixed. I hope this becomes a recall because numerous people I talk to are getting rid of they're gmcs and chevys and going elsewhere.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11595813,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/15/2024","dateComplaintFiled":"06/21/2024","vin":"1GTR9CEK3LZ","components":"POWER TRAIN","summary":"The transmission went at 67,000 miles and posed a safety issue when my husband was driving & suddenly couldn't drive above 1st gear. Vehicle is at the GM dealer and has been for weeks, but there have been so many issues with the transmissions of this year, make & model, that the transmissions are on back order and we are told it  can be MONTHS before they get one in. The dealer already has another one that has been waiting for once since April. We know of others with this same issue on this make/model/yr, as well as engine issues, but yet there are NO recalls for this issue. The only warning that came on was when the issue occurred- no prior warning or indications. GM is involved but make no comment on why there isn't a recall for an obvious known issue.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11590544,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/30/2022","dateComplaintFiled":"05/24/2024","vin":"3GTU9BETXLG","components":"SERVICE BRAKES, AIR,ELECTRICAL SYSTEM,ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle was stuck in gear. While driving there was an abnormal burning odor coming from the vehicle. The vehicle failed to start on several occasions. There were sparks from the passenger's side front seat. Several unknown warning lights were illuminated. The vehicle was taken to the local dealer, where it was diagnosed with electrical, transmission module, wiring harness, air alternator cooler, and exhaust system failures. The vehicle was repaired; however, the failure recurred. Additionally, while driving at undisclosed speeds, there was a failure with the vault meter. The OnStar system provided an error with the antilock braking system. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 44,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11587778,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/28/2024","dateComplaintFiled":"05/09/2024","vin":"3GTU9DET9LG","components":"ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM","summary":"My wiring harness which affects all systems. I was on the Interstate when out of nowhere any and all warning lights came on. The power was cut and rapidly slowed down. I also pulled into traffic and the truck just lost power. The problem was confirmed by dealership. The vehicle was inspected by dealership and wiring harness was the issue. The issues appeared out of nowhere. All the warnings lights came on at once. There has been numerous issues with this part and it\u2019s even recognized by just.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11586679,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2024","dateComplaintFiled":"05/02/2024","vin":"3GTU9DED6LG","components":"POWER TRAIN","summary":"Has happened three times.   1st and 2nd time driving down road towing trailer,  rear wheels locked up for 12-15\u2019 while driving 50-55mph. I had thought it was my trailer axel. Happened twice within 6 miles.   3rd time was 1 month later.  Rear Wheels locked up driving on interstate at 70-75 mph.  I estimate that i traveled 1,800 miles between the 2nd and third incident.    Vehicle is at the dealership getting inspected for repairs   No warning lamps before,  almost every warning light came on after incident   If this happened on a wet, ice, snow or dirt road this could have caused a serious accident.  It would also be bad in a curve.   Dealer took for road test but did not have any luck recreating the issue.  They checked the differential oil And it didn't have any heavy metals. They are going to take the differential apart to inspect it to verify.  They checked my battery and said it needed to be replaced.  Also a wheel speed sensor needed to be replaced.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11586345,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/09/2022","dateComplaintFiled":"05/01/2024","vin":"3GTU9CED6LG","components":"ELECTRICAL SYSTEM,STRUCTURE,UNKNOWN OR OTHER","summary":"The rear sliding window leaks water inside the cab every time it rains. With water getting into the cab the issue of mold has begun and that could be a serious factor to any children or adults that ride inside the cab of the truck. There is also rust issues that are notable under the rear seats of the vehicle. Water inside the cab can also interact negatively with any electrical components of the vehicle. I tried to get ahold of the dealer and they always say they don't have time to get my truck in. I have read that this has happened to other vehicles that are the same year and model and they just fix it with caulk which does not seem appropriate for a almost new vehicle. The vehicle has not been inspected. There were no warning lamps prior to this issue. A possible symptom was that my back up camera stopped working for a day right after a rain.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11582161,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":1,"numberOfDeaths":0,"dateOfIncident":"04/02/2024","dateComplaintFiled":"04/10/2024","vin":"3GTU9DED8LG","components":"AIR BAGS","summary":"The contact owns a 2020 GMC Sierra. The contact proceeded through the intersection when a vehicle crashed into the contact's driver's side door and wheel at unknown speeds. The contact stated that the other vehicle crashed into two vehicles, then crashed into the contact's vehicle and stopped. The contact stated that the police report stated that the vehicle that crashed into the contact was constantly moving at the posted limit of 50 MPH. The air bags did not deploy. The contact was treated for a left shoulder sprain and swollen right hand, however, it was unknown if other passengers sustained injuries. A police report was filed. The vehicle was towed to a body shop but the vehicle was not repaired. The failure mileage was approximately 34,800.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11581595,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/03/2023","dateComplaintFiled":"04/07/2024","vin":"3GTU9CED3LG","components":"STRUCTURE,UNKNOWN OR OTHER","summary":"Rear window leak causing whole inside back to get soaked. Have paid hundreds of dollars to have sealed didn\u2019t work. New window didn\u2019t work it still leaks. It\u2019s going to cause interior to mold and body to rust. Dealership and glass business both say it\u2019s body issue and they have seen many GMC and Chevrolets with this issue. Google show 1000s with same problem.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11580419,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2024","dateComplaintFiled":"04/01/2024","vin":"1GTU9FEL3LZ","components":"STRUCTURE","summary":"GM refuses to fix a known design flaw in the back sliding glass frame on 2020_24 gmc sierra trucks. This issue will generate toxic mold as large quantities of water enter the cabin and can be extremely harmful for certain individuals allergic to mold.  GM knows about this issue and tried to secretly advise techs via TSB 18-na-383 to apply sealant on the frame and if customer returns to replace frame. However they do not want to do this outside the 3 year warranty.  The back glass on a truck is not a serviceable item.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11578865,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/15/2024","dateComplaintFiled":"03/22/2024","vin":"3GTP8DED4LG","components":"FUEL/PROPULSION SYSTEM","summary":"13540028 Fuel Pump Power Control Module Part failed leaving me stranded and had to get a tow.  When the failure occurred, vehicle would not crank and there was no forewarning.  It worked and then it didn't.  The part is on notional backorder and there seems to be a lot of vehicles out there with the same issue and that just with the mechanics\\service departments I've contacted that have had the part on backorder for months.  So the fail rate seems high and I'm sure others got stuck in a lot worse situation than me.  Then GMC continues to produce vehicles with a newer similar part while not producing the same part for like new vehicles.  Which will probably only compound the backorder issue when the newer vehicles eventually have the same issue.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11576776,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/27/2023","dateComplaintFiled":"03/12/2024","vin":"3GTU9EET6LG","components":"ENGINE AND ENGINE COOLING","summary":"See attached document for complaint","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11575910,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2023","dateComplaintFiled":"03/06/2024","vin":"1GTP9EED1LZ","components":"ENGINE","summary":"Vehicle has excessive oil consumption.  Within 5000k oil change interval, no oil on dip stick around 3000k miles.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11575575,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/04/2024","dateComplaintFiled":"03/05/2024","vin":"3GTU9DEL7LG","components":"ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,VISIBILITY/WIPER","summary":"Back window frame crack led to water intrusion which flooded electric module controlling speedometer and adaptive settings. Extremely unsafe driving with faulty electrical components unknown to me. Insurance and Dealership told me this is a common GMC occurrence. Cost is near $10,000 to make truck drivable.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11573939,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/12/2024","dateComplaintFiled":"02/26/2024","vin":"1GTU9FED0LZ","components":"FUEL/PROPULSION SYSTEM","summary":"Fuel Pump Drive Control Module (Part No. 13540028).  This item is a recall on several other vehicles, but not identified on my year/model.   On 4 separate occasions over a 3-4 week period, the engine starting running very rough lost power and stalled while traveling down the road (highways, interstate, and a side street).  I was finally able to pull a fault code and research the history of this code and this part on several other GMC/Chevy modeled vehicles.   The dealer advised I was lucky to find the part because most of them are on backorder due to the recall on other vehicles.  The one I got was for a recall, but the customer hadn't returned in time so they sold it to me.   I had a repair garage replace the component on Jan 13, 2024, and haven't had any repeat issues.   The check engine light did come on each time with a P129F code.  It would reset after the vehicle stalled and was powered off for 10-15 minutes and the symptoms would go away.  Each time left me lucky to get my vehicle over several lanes and off the side of the road.   The date below was the last time it happened.  The first time it happened was on Dec 6th and the vehicle started back up in just a minute or two.  I still have the old part if it needs to be sent and evaluated to compare with other recalls on the item in other vehicles.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11572789,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/29/2024","dateComplaintFiled":"02/19/2024","vin":"3GTU9EET7LG","components":"STRUCTURE","summary":"Rear Sliding Glass window frame has cracked and allows water to enter the cab of the vehicle. Yes this is available for inspection. The water entering the cab of the vehicle can create mold from moisture build up if left untreated. I was able to have the dealer service center confirm the issue noted in [XXX]  but they were unable to repair it as it is outside of warranty. I was able to have an independent 3rd party glass company confirm that it was indeed a manufacturers defect with a cracked housing and not an issue with sealant around the glass itself. No warning lamps or other indications other than water in the back seat of the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11572065,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2024","dateComplaintFiled":"02/15/2024","vin":"3GTU9DED8LG","components":"ENGINE","summary":"1. Valve Lifter Failure 2. While entering the [XXX] freeway and trying to merge into traffic the engine lost power and I had to swerve and brake to avoid an adjacent vehicle, and freeway traffic had to avoid my slowing down to pull over. 3.Yes, Van GMC in Scottsdale, confirmed lifter failure. 4. Yes, GMC Dealership 5. Absolutely no warning given INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11572201,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/09/2023","dateComplaintFiled":"02/15/2024","vin":"1GTU9FET8LZ","components":"STRUCTURE,UNKNOWN OR OTHER","summary":"Rear Window Leaks due to failed sealing at the factory.  If not fixed will ruin interior components and possibly rust. Yes No No","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11571977,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/18/2023","dateComplaintFiled":"02/14/2024","vin":"1GTU9FEL2LZ","components":"VISIBILITY","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while detailing the rear interior of the vehicle, the contact discovered water surrounding the rear windshield casing and the water was leaking into the rear seating. Additionally, the rear carpet was soiled with water. The contact used towels while attempting to soak up the water. The vehicle was taken to the dealer where it was diagnosed that the failure was due to the failed rear windshield glass fasteners. The contact was informed that the failure had damaged the rear carpet, padding, and the rear seat.  In addition, the contact was informed that the carpet and padding needed to be replaced due to mold build up.  The contact was informed that the vehicle was out of warranty coverage. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 31,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11569648,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/14/2020","dateComplaintFiled":"02/03/2024","vin":"1GTU9FEL5LZ","components":"STRUCTURE","summary":"The back window leaks, I brought it in they told me it wasn't warranty so I paid to have it fixed. Still leaks.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11569714,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/03/2024","dateComplaintFiled":"02/03/2024","vin":"1GTR8CEK1LZ","components":"SERVICE BRAKES","summary":"Lost break, second time this month, showing break failed 40 mph max speed, abs light on, break light on, and 2 more light on the car with antislipiring or something like that, the another one no idea what it is","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11565626,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/15/2024","dateComplaintFiled":"01/15/2024","vin":"1GTP9EEL2LZ","components":"POWER TRAIN,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE","summary":"Lifters Failed in November 2023 and had repaired major engine damage including 4 cylinders, cam shaft, lifters, gaskets etc.  After major repair work done. Truck is now doing same exact thing in January 2024. The dealership is stating they will not look at the vehicle unless i buy a new battery. I asked them to try a used battery to see if that makes a difference. And then if it is the battery i will replace. I was hung up on after the technician doug Pedersen stated ill have a supervisor call you back.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11563034,"manufacturer":"General Motors, LLC","crash":true,"fire":true,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/22/2023","dateComplaintFiled":"01/02/2024","vin":"3GTP9EEL1LG","components":"AIR BAGS","summary":"Driving on state highway at posted speed. A deer ran into the right front and side of vehicle. Side airbags deployed. When the right side airbag deployed, it burned a hole in my passengers winter coat that completely went through the right sleeve forearm and scorched the sweatshirt that she was wearing under the coat. Smoke was visibly apparent in the cab  of the vehicle. We thought the truck was on fire , then finally determined it was the sleeve of here coat.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11563107,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/28/2023","dateComplaintFiled":"01/02/2024","vin":"3GTU9DED5LG","components":"STEERING","summary":"While driving, the power steering (electronic) failed.  Driver Info Center gave no waring until the system failed.  After failure the DEC gave a warning to \"Service Poser steering\".","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11560834,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/12/2023","dateComplaintFiled":"12/19/2023","vin":"1GTR9BEKXLZ","components":"UNKNOWN OR OTHER,VISIBILITY/WIPER","summary":"The rear window was leaking a substantial amount of water soaking the back seat.  Had the service bulletin done, which did not work.  Then under further inspection found cracks in the rear power window track.  Dealer told me GM would not cover replacement because it was out of the 3 year warranty.  Then was told it would cost me 1200 dollars to replace.  GM should cover this because it will lead to black mold.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11557049,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/14/2023","dateComplaintFiled":"11/27/2023","vin":"3GTU9CET2LG","components":"ENGINE","summary":"timing chain failure, timing chain components are available for inspection. Costly premature repair/failure. Could leave occupants stranded in unsafe environment which could lead to death. The vehicle has been diagnosed by the dealership and OEM manufacturer has been notified. There was a warning lamp.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11553907,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/05/2023","dateComplaintFiled":"11/07/2023","vin":"3GTP9EEL2LG","components":"SERVICE BRAKES,FORWARD COLLISION AVOIDANCE","summary":"ABS LIGHT LIMITED TO 43 MPH ESC system Steering assist reduced  Service Trailer Brake System  Engine light on","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11546253,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/24/2022","dateComplaintFiled":"09/24/2023","vin":"3GTU9EET4LG","components":"VISIBILITY/WIPER","summary":"The rear window on this vehicle is leaking water and has been for some time. It has become quite bad and is causing an odor and discoloration in the carpet. I could not find the cause of the problem until recently with the plastic cracking more. The vehicle has 41,000 miles and the dealer stated that is out of warranty and all repairs would be a cost to me. I researched this and have found it is a common fault this this vehicle.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11543333,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2023","dateComplaintFiled":"09/08/2023","vin":"3GTP9EEL0LG","components":"STEERING,SUSPENSION,POWER TRAIN","summary":"The right side started clicking out of no where when I turn the steering wheel","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11542885,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/06/2023","dateComplaintFiled":"09/06/2023","vin":"1GTU9EET6LZ","components":"ENGINE","summary":"I have a 202 GMC Sierra 1500 with a 3.0 Duramax with 95,000 miles.  I have hade 2 glow plugs replaced under  warranty and took in for a third glow plug.  They stated that the there was a software update that could fix it, but I would have to pay for it.  The vehicle has a 100,000 mile warranty and the software update is to fix a powertrain item that is covered under the 100,000 mile warranty.  This is also an issue with bad software that disables the remote start.  Not sure why I have to pay for this software upgrade to to a GM issue from day 1.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11541089,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/24/2023","dateComplaintFiled":"08/28/2023","vin":"1GTU9CED1LZ","components":"SERVICE BRAKES","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 60 MPH, the service brake, check engine, and ABS warning lights were illuminated. The contact took the vehicle to an independent mechanic to be diagnosed and it was determined that the passenger\u2019s side rear caliper needed to be replaced. The vehicle was not repaired. The vehicle was taken to the local dealer to be diagnosed, and the contact was informed that the rear passenger\u2019s side caliper needed to be replaced. The vehicle was not repaired due to the parts not being available. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 20V116000 (Service Brakes, Hydraulic) however, the VIN was not included. The manufacturer had been informed of the failure. The failure mileage was approximately 69,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11538181,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/09/2023","dateComplaintFiled":"08/13/2023","vin":"1GTU9FEL5LZ","components":"FUEL/PROPULSION SYSTEM","summary":"Reference your GM/Chevy recall NHTSA [XXX] , I have a 2020 GMC truck with a failed Fuel Pump Control Module, same part/same part number used in the SUVs.  Are you going to recall the trucks also.  Lucky for me, mine failed as I pulled into my drive way. Had to have my truck towed to the dealership, 2 days later informed my FPCM was bad, and of course there are no replacement part available.  [XXX]  INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11535519,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/26/2023","dateComplaintFiled":"07/31/2023","vin":"3GTU9DED8LG","components":"SUSPENSION","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated while driving out of the driveway, the front passenger\u2019s side wheel separated from the vehicle. The vehicle was towed to the dealer and the contact was informed that the upper control arm ball joint had fractured and that the front upper control arm needed to be replaced. The contact was informed that the vehicle was not included in NHTSA Campaign Number: 21V718000 (Suspension). The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 41,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11535648,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/31/2023","dateComplaintFiled":"07/31/2023","vin":"1GTR9CED0LZ","components":"STEERING,ELECTRICAL SYSTEM","summary":"Electronic power steering stops working randomly which makes it nearly impossible to safely drive the vehicle. The strength needed to turn the vehicle is so great that the steering wheel elevation lock fails and the wheel slams to the lowest limit of travel. Problem started around 50,000 miles and was only a warning that went away as soon as I got in the truck again. However reappeared today and the steering went out this time. The GM dealer in Mexia Texas didn't know what was wrong, I am taking it to a dealer in Corsicana tomorrow. This is a known problem that GM has had in the past however my vehicle has no active recall to make my truck safe free of charge. This puts myself and other drivers at risk because there would be no way to rapidly maneuver the vehicle to avoid a colision.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11535291,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/29/2023","dateComplaintFiled":"07/30/2023","vin":"3GTP9EEL9LG","components":"FUEL/PROPULSION SYSTEM","summary":"My vehicle suddenly did not want to start without any warning. I drove my truck and everything was good until I turned it on with the remote and not even a minute after it shut off. I tried turning it back on and it only cranked but would not start. I had a mechanic diagnose it and their computer gave them fuel pump error code. They said it was the fuel pump control module and that they have been getting several GM trucks of the same year having that issue. My truck has less than 36,000 miles on it to have this issue and I have seen that GM has issues with their fuel pump components so I dont understand why they have not recalled them. This is a safety concern because these trucks auto shut off when stopped at red lights and it could randomly shut off and not turn back on leaving someone stranded in the middle of the road without any warning.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11529671,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/15/2022","dateComplaintFiled":"06/29/2023","vin":"3GTU9EETXLG","components":"STEERING,SUSPENSION,POWER TRAIN","summary":"The truck has developed a shake that can be felt in the floor boards, seat, and steering wheel at highway speeds.  It\u2019s has spent several months at dealerships without being fixed. I have replaced tires, wheels, shocks, upper control arms, and the transfer case without success.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11521821,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/29/2023","dateComplaintFiled":"05/13/2023","vin":"3GTP9EEL3LG","components":"SERVICE BRAKES","summary":"We were hauling a trailer and driving approximately 65-70mph with cruise control enabled. The vehicle randomly disengaged cruise and the ABS telltale illuminated, lost brake functionality completely. Safety of my family and other vehicles around us was compromised!  Downshifted to try and navigate the vehicle to the side of the road and the ESC warning text came on the screen. Was able to luckily stop vehicle by downshifting.   Turned off ignition and then cycled back to run, brakes and all warnings were cleared. Started driving vehicle with flashers on the side of the road see what would happen and approximately ten miles later same thing happened but this time brake functionality was reduced significantly but not completely but still had to downshift to stop.   Called GMC and was told this was not a recall even though vehicle brakes randomly stopped working. Told us they would do nothing since the vehicle was out of warranty 80k miles and warranty was 60k and also since no one was hurt. We were 1-2 hours from being in the Mountains driving and not sure we would be here today if this had happened in the Mountains!  Dealership ordered a new master brake booster and ABS. When installed the part would not flash and GM engineering told them to replace the part a second time.They we\u2019re told to keep flashing till it takes even though the second module was also bricked. Seems strange a new part would be broken as well and the master cylinder was resetting.   Dealership states the vehicle is fixed but the safety of my family and others driving around me were in extreme danger when this happened. Do not feel safe driving this vehicle and not convinced this will not happen again. When we called GM they told us they are receiving many calls about this happening to AT4 vehicles but they have not issued a recall yet.   Submitting this because vehicles should not randomly lose brake functionality and do not want others at risk or my family.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11520791,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/01/2023","dateComplaintFiled":"05/07/2023","vin":"3GTU9BED0LG","components":"POWER TRAIN","summary":"Bearing in transmission failed at 75000 miles. Took to dealership and they said truck needs new transmission. Truck makes rattling noise in transmission pan. Dealer said that oil was full of metal shavings. Dealer also said that this was second truck in 2 weeks with same issue. No warning lights or check engine lights came on. Dealer advised that the transmission could fail and to park it until I can pay $6000 for transmission replacement. Dealer heard rattling and confirmed metal shavings. Transmission failure could result in traffic hazard or accident if transmission loses all drive ability.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11520581,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/04/2023","dateComplaintFiled":"05/05/2023","vin":"3GTU9DED5LG","components":"AIR BAGS","summary":"The contact owned a 2020 GMC Sierra 1500. The contact stated that while he was stopped in traffic, he was rear-ended, which caused him to crash into the vehicle in front of him. The contact stated that smoke was seen coming from the air bag; however, the air bags failed to deploy. The contact had not sustained injuries. A police report was filed. The vehicle was towed to a salvage yard. The manufacturer was not made aware of the failure. The approximate failure mileage was 64,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11517783,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/27/2023","dateComplaintFiled":"04/19/2023","vin":"3GTP9EEL6LG","components":"ELECTRICAL SYSTEM","summary":"We are unsure what happened that caused the issue. One day the dashboard just started giving us error messages, 3 of them to be specific. One says check turn signals, another says check trailer brake light and another something else about brakes or turn signals. (We have to dismiss them all before anything on the dash is viewable). This issue is causing the blinkers to blink fast as though the blinker lights need replaced and it happens when turning right or left. The alerts continue to give us error messages every few minutes, even after we have dismissed them all.  We had the truck at a shop trying to figure out the issue and his guys spent hours and replaced things he thought were causing the issue but nothing fixed it.  He referred us to take it to the dealership service shop for troubleshooting so we took it to the GMC dealer where we bought the truck.  GMC has already spent hours, maybe 5-7 hours at $150 per hour, trying to figure out what's wrong and have been unable to find anything wrong.  The truck is still at the GMC dealership shop but I can get pictures of the errors when we get it back.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11515020,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2023","dateComplaintFiled":"04/02/2023","vin":"3GTU9DEL6LG","components":"VISIBILITY/WIPER","summary":"My back window leaks and gm has said that the warranty is over by years not miles it is not covered","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11515021,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/03/2023","dateComplaintFiled":"04/02/2023","vin":"3GTU9DEL6LG","components":"VISIBILITY/WIPER","summary":"My rear window leaks there is a bulletin on it Call GM says it is not responsible for the repair because it is over on the years but not the mileage it\u2019s clear they know about the problem it\u2019s in many pickups that gm manufacture here is the bulletin file:///var/mobile/Library/SMS/Attachments/97/07/3010617D-BBB0-4FB8-859B-4BA5E2BE3F3A/Ed%20blakeslees%20truck.png","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11506668,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/10/2023","dateComplaintFiled":"02/10/2023","vin":"3GTU9FEL5LG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"Camera always stays on even when i am driving camera still on my dashboard","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11505712,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/03/2023","dateComplaintFiled":"02/05/2023","vin":"1GT49REY1LF","components":"ENGINE","summary":"Diesel exhaust fluid heater short circuits due to poor design. This issue occurs multiple times, including after being repaired.   The failure limits the trucks capabilities until it is entirely unusable.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11502802,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/28/2021","dateComplaintFiled":"01/20/2023","vin":"1GTR8CEK1LZ","components":"STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"I own a 2020 GMC Sierra 1500 4-Cyl, Turbo, 2.7 Liter with 20K miles and I owned the truck for almost 2 years. All of a sudden my vehicle started receiving multiple warning messages. While driving I stopped, and when traffic stopped in front of me the engine died all the lights were on warning messages on the dashboard started showing up. Electronic Stability Control, Antilock Braking System, ECM, reduced Engine Power, etc., and the brakes were hard to step on it and the steering wheel hard to turn,I took my foot off the brakes and pressed it again to start. It started but the check engine light was still on, this happened FOUR times already and THREE times while parked when I tried to start, after a few tries giving few minutes intervals, it will start with all the lights on and warning messages on the dashboard start showing up. Electronic Stability Control, Antilock Braking System, ECM, reduced Engine Power, etc., and the brakes were hard to step on it and the steering wheel hard to turn.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11502068,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/16/2023","dateComplaintFiled":"01/16/2023","vin":"3GTP9EED6LG","components":"STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"Normal driving conditions vehicle decelerated and warning lights and notification appeared. Warning were \u2018Service ECS\u2019 and \u2018Steering Assist is reduced Drive with care\u2019. Shut off vehicle for 30 minutes and warnings were no longer present and vehicle drove normally. Happened again 24 hours later. Received email notifications from GMC to arrive within one day. This was a know recall of the previous model year.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11498998,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/27/2022","dateComplaintFiled":"12/27/2022","vin":"3GTP8BED9LG","components":"VEHICLE SPEED CONTROL,SERVICE BRAKES","summary":"i was stopped at a red light and when the light turned green I accelerated and the vehicle shut off and then came back on. when the vehicle came on i had a service esc light and a system break failure warning telling me not to exceed 62mph. i made it back to my house driving with extreme caution. the breaks were very delayed while driving.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11497614,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/10/2022","dateComplaintFiled":"12/15/2022","vin":"3GTP8DED4LG","components":"FUEL/PROPULSION SYSTEM","summary":"The fuel pump module failed according to the dealer at 34000 miles . Car stop while driving. Cranks but no start. After resting it for hours I was able to start. Drive couple of miles about 39000 miles it stops middle of driving and couldn\u2019t start anymore but still cranks","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11493176,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/10/2022","dateComplaintFiled":"11/11/2022","vin":"1GTP9EEL8LZ","components":"STEERING,SUSPENSION","summary":"Drivers side upper control arm failure. Threw truck into oncoming traffic. Dealership has inspected multiple times stating everything was good to go. Been complaining about a loud clunk to dealership for months","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11492992,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/08/2022","dateComplaintFiled":"11/09/2022","vin":"3gtu9bed3lg","components":"UNKNOWN OR OTHER","summary":"Once vehicle is put in park, the control panel comes and reads, \u201cshift in park and radio and head lights stays on as well\u201d.  I exit the vehicle and it continues to display the mention above.  I\u2019ve restarted the vehicle and put it back in park still the \u201cshift in  park\u201d, stays on. I exit the vehicle and monitored the vehicle for approximately 5 minutes and finally turned off.  This never happened before, I\u2019m afraid it may stay on one of these days and run the battery down.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11490463,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/23/2022","dateComplaintFiled":"10/23/2022","vin":"1GTP8DED0LZ","components":"POWER TRAIN","summary":"My 2020 Sierra SLT always hesitates or stutters upon take off only on the very first start of the day every day. It appears to be a transmission gear issue or perhaps air/fuel issue.   I also have had several different issues with my infotainment system. It screen changes from one screen to another on its own occasionally and it also has a very loud pop when I turn off my iphone Xr from the trucks sound system as if it will crack my speakers.    I have taken it in to two separate Cavendar GMC dealerships in San Antonio on 3 different occasions and they claim it does not do either. This cannot be the case as it does it for me every single day since I bought it from the showroom floor. They have said they have updated or reprogrammed both systems but I still have both issues. I am about to lose warranty coverage and I am afraid this will never be addressed. I am taking it in 1 last time. I will never buy another GM product!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11490135,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/17/2022","dateComplaintFiled":"10/20/2022","vin":"1GTU9FEL6LZ","components":"SUSPENSION","summary":"I was taking my truck to have an oil change and tire rotation at the dealership.  I have just traveled approximately 15 miles on the freeway, exited, and entered the parking lot of the dealership. I went over a speed bump at about 5-7mph and felt a clunk, with a grinding sound and the car pulled to the right. I got out of the truck and found the front passenger wheel was hanging off with only the lower connections attaching it to the frame.  (Control arm maybe?).  The service department worker was right there when it happened.  He told me they have been having issues with the leveling kits on 2020 GMC sierras causing this issue, especially on the right side. He said that this was not the first that he had seen.  Two other people at the dealership mentioned the same thing.  I was never notified of the potential failure and possible catastrophic consequences.  I contacted GMC who's \"Product Allegation\" department told me they could not investigate because the truck was repaired at the dealership.  They didn't even review the photos I had sent them.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11486180,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/17/2022","dateComplaintFiled":"09/24/2022","vin":"3GTP9EEL6LG","components":"FUEL/PROPULSION SYSTEM","summary":"The vehicle shut off while driving. It turns over fine but will not crank. Later cranks but again will shut off and not start. This could get me killed on the interstate. It is pulling trouble code P129F fuel pump power control module. This is a 2020 GMC Sierra AT4 with a 6.2 motor with 80,000 miles on it.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11484028,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2022","dateComplaintFiled":"09/12/2022","vin":"3GTU9BET2LG","components":"SERVICE BRAKES","summary":"Brake pad monitoring system alert came on driver information center warning screen. Brought to local dealer who told me I needed new brake pads. There is a current safety bulletin on the NHTSA.GOV website for the 2019 model year GMC Sierra, as well as the 2019 Cadillac CT6,  but not he 2020 model year.  The week prior my driver information center reported front brakes in the high 80's and the rears in the low 90's in terms of percentage of brake life remaining. How can the system go from being safe to being unsafe in a week (and less than 200 miles)?  At this point I don't know if my vehicle has a safety problem with my brakes or if there is a sensor and programming issue as described in recall N192264451.  I have no observable issues while braking - no pulsing, noise, chattering - that would indicate any brake problems. My only inclination is the alert on the driver information center.  Both local dealer and GM customer service are telling me to perform service and pay out of my pocket. This seems inconsistent based on the above recall.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11484147,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/06/2022","dateComplaintFiled":"09/12/2022","vin":"1GTU9DET7LZ","components":"POWER TRAIN","summary":"Consistent issues with my truck. It is a 2020 GMC Sierra 1500 vin: [XXX].  In April 2022, my truck started to exhibit concerning issues. I was worried about driving home from work and called the dealership I bought the truck at. They recommended that I take it to the the service center in Frankfort, KY where I work. I drove the truck directly to Neil Huffman GMC. They declared the truck unsafe for me to drive. They set up rental car for me to use and I left the truck at the service center. They initially said it was the torque converter. Over the course of two months they kept finding more issues. Repairs were completed at Neil Huffman GMC service center located in Frankfort, KY. My truck still has the following issues.. 1. Ringing sound 2. Grinding or clunking noises 3. Loud noise when I press the gas pedal 4. Delayed shifting and hard shifting problem   I drive a hour back and forth to work everyday and don\u2019t want the truck to have issues on the interstate. Driving with a bad torque converter is unsafe since it causes sudden stoppages and significant speed fluctuations. Worn or slipping transmissions have many warning signs. A damaged transmission creates a dangerous situation for me and for other drivers. I had an appointment at Adams GMC in Richmond, KY on September 1st. They said they couldn\u2019t hear anything and no services were conducted. Neil Huffman GMC service department said they replaced basically the entire transmission. I don\u2019t understand why there would be issues still.   [XXX]  INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11482859,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/04/2020","dateComplaintFiled":"09/04/2022","vin":"3GTP8DED6LG","components":"UNKNOWN OR OTHER","summary":"Rear window (the one that faces straight back towards bed of truck) is leaking\u2026 Haven\u2019t taken it in to dealership for repair because I\u2019ve exceeded mileage so truck is no longer under warranty\u2026 Not sure how long it\u2019s been leaking but I\u2019ve recently noticed that water stains (runs) on the inside of this window after rains, washes, etc\u2026","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11477894,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/01/2022","dateComplaintFiled":"08/06/2022","vin":"3GTU9DEL1LG","components":"SUSPENSION","summary":"With out any warning my right wheel had broken when I tried to drive from my dive way to work. Looks like Excessive wear to the front-upper control arm ball joints  resulted in ball joint failure and wheel separation. Reported to a dealer. Waiting for the appointment to do full investigation.  Separation of a front wheel while the vehicle is in motion increases the risk of a crash. I drive in city and highway roads, nothing rough.  Very high risk for lots of lives!!!!!! People can die!!! Need immediate attention!!!! Please see  https://www.consumeraffairs.com/recalls/fox-factory-recalls-gmc-sierra-1500s-and-chevrolet-silverado-1500s-101321.html    Concern DATED and published on 10/13/2021 Why nothing has been done to warn the owners? I smell lots of lawsuits.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11477683,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/14/2022","dateComplaintFiled":"08/04/2022","vin":"1gtu9fel6lz","components":"UNKNOWN OR OTHER,ENGINE","summary":"Vehicle engine went out on truck.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11475475,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/23/2022","dateComplaintFiled":"07/23/2022","vin":"1gtr8cek6lz","components":"STEERING","summary":"I started my truck like normal and my service power steering light drive with care message came on and then Service ESC and the traction control light. My power steering was completely gone. I researched and found that 2020-21 GMC SUVs were recalled due to the same issue. My GMC truck is doing the same thing. I barely made it home from the store not having power steering is extremely dangerous, I still have no power steering. I just purchased this truck from CarMax last month.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11473137,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/08/2022","dateComplaintFiled":"07/09/2022","vin":"1GTU9FELXLZ","components":"STEERING,VEHICLE SPEED CONTROL,SERVICE BRAKES","summary":"The truck stated to have the check engine light on, by the time that happened the brakes were hard to step on it and the steering wheel hard to turn, I had been asking to GMC superior of Siloam springs to check the truck because, got scared while I couldn't make stop the truck while on traffic, but they don't had open appointments for that day or the other following days, so a week after they got one and I missed because my work, I set another one at GMC on Springdale but they want me to charge me whenever the truck has an extended warranty, so I told them to leave it like that so finally got another appointment at Siloam springs location but while driving down there the same thing happened all the light on warning messages on the dash board start showing up and the brakes were hard to step on it and the steering wheel hard to turn, I got told them what was happening, about and how exactly happened. That day after 30 minutes I got a call saying that it was fixed I still asked if they were sure he said yes, the next day I almost crashed with a neighbor at my work place because I couldn't stop the truck, so today I took back the truck and the guy at the desk told me that they may just erase the codes and don't really checked what was wrong, I'm just filling this report because even if I got full coverage on that truck, I'm not gonna be responsible if I'm involved in an accident.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11469521,"manufacturer":"General Motors, LLC","crash":true,"fire":true,"numberOfInjuries":7,"numberOfDeaths":0,"dateOfIncident":"08/09/2021","dateComplaintFiled":"06/16/2022","vin":"1GT49PEY0LF","components":"VEHICLE SPEED CONTROL","summary":"I investigated and Unintended Acceleration crash that occurred on 8-9-2021. The vehicle had just left a body shop where it had repairs to the left front of the vehicle near the ECM. The driver reported the vehicle would not slow down. He face timed a witness and showed her his foot was on the brake and not the accelerator pedal collaborating his statement. The 2020 GMC accelerated to 93 miles per hour crashing into the back of a Cadillac Escalade. Upon impact the fuel tank of the Cadillac exploded igniting both vehicles on fire and burning a fed-x truck that was folded in half from the sever impact. The EDR report stated the brakes were applied fully for a full 5 seconds prior to the crash while the vehicle was still accelerating. The accelerator was reading a constant 57% during the lead up to the crash and the brake rotors showed heat related glazing from excessive braking. The engine torque was also at 1023NM leading up to impact collaborating Unintended Acceleration further. Based on the evidence gathered my opinion is there was a short in the components in the left front of the vehicle most likely the ECM harness that caused the crash. It is unknown if the damage was caused by the previous crash, the body repairs or a manufacture defect at this time. The radiator had also just been replaced so moisture could have contributed to the malfunction. If moisture shorts APP-1 to APP-2 the safety systems can fail to detect a single fault because it causes redundant faults","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11465144,"manufacturer":"General Motors, LLC","crash":true,"fire":true,"numberOfInjuries":2,"numberOfDeaths":0,"dateOfIncident":"08/09/2021","dateComplaintFiled":"05/18/2022","vin":"1GT49PEY0LF","components":"SERVICE BRAKES","summary":"This vehicle was involved in a fatal crash when it rear ended an SUV stopped at a red traffic light.  The driver alleges mechanical failure of the brakes.  Police performed a vehicle download which captured 5 seconds of pre-accident data.  The download shows the accelerator pedal was fixed at exactly 57% the entire 5 seconds pre-crash while the driver simultaneously applies the brakes the entire 5 seconds.  A city bus captured the crash on a dash camera.  Despite the driver desperately applying the brakes, the vehicle's speed continued to increase and the driver was unable to avoid the collision, and burst into flames upon impact.   The vehicle mileage is less than 2,500.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11459875,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/04/2022","dateComplaintFiled":"04/06/2022","vin":"1GTU9FET1LZ","components":"ENGINE","summary":"A VERY STRONG \"AMMONIA\" ODOR COMES INTO THE CABIN. THIS HAPPENS WHEN THE DEF FLUID IS GOING INTO THE EXHAUST SYSTEM FOR THE REGEN PROCESS. THE  ODOR MAKES PEOPLE INSIDE NAUSEOUS AND DIZZY. MUST OPEN WIDOWS OR STOP AND GET OUT OF THE VEHICLE. OUR GMC DEALER CAN FIND NO CODES OR PROBLEMS WITH THE EXHAUST SYSTEM. WE HAVE ALSO NOTICED THAT THE DEF FLUID HAS GONE DOWN VERY QUICKLY SOMETIMES DURING THIS EVENT.  IT IS RANDOM.  SOME DAYS NOTHING, OTHER TRIPS 3 AND FOUR TIMES THAT THE ODOR OCCURS.  LOOKING ONLINE- THERE HAVE BEEN MANY POST ABOUT THIS PROBLEM.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11458045,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/23/2022","dateComplaintFiled":"03/23/2022","vin":"3gtp8ced7lg","components":"POWER TRAIN","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle shuddered. The vehicle was taken to the dealer however, the mechanic could not duplicate the failure. The vehicle was then taken to Gilland Chevrolet GMC (3071 N US Hwy 231, Ozark, AL 36360) where the contact was informed that the vehicle already had new transmission fluid filled in the transmission. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 42,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11455697,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/26/2021","dateComplaintFiled":"03/08/2022","vin":"3GTP9EEL4LG","components":"STEERING,ELECTRICAL SYSTEM,VISIBILITY","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving in the snow, the tire pressure and power steering warning lights illuminated. The vehicle was not diagnosed or repaired. The vehicle was taken to a dealer where it was confirmed that there were no recall or warranties that would cover the repairs for the warning lights. The failure mileage was 140,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11451041,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/08/2022","dateComplaintFiled":"02/08/2022","vin":"3GTU9CED3LG","components":"STEERING","summary":"Steering locked up after normal use at lunch. After sitting, traction control light then on and wheel would not turn after work.  Did a computer reboot and steering released. Results still pending, she is not home yet.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11450056,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/03/2021","dateComplaintFiled":"02/02/2022","vin":"1GTU9FET3LZ","components":"AIR BAGS","summary":"I receive at random times the warning in the DIC (driver information center) on the dash of my car together with an air bag warning light.  I have had this happen sometimes frequently and sometimes not for a thousand miles.  I have taken it in at least 8 times, some parts were replaced in seat belt, but it continues to show up.  The problem is it now doesn't leave a code but my local dealer said if it ever came up when I could get it to them to bring it in and leave it running.  that happened and I brought it in the ran a computer check and got a code.  I had to leave for Florida 2 days later, so they said bring it in to a dealer in Florida, give them the code, which I did, they checked it but said they will not replace parts without an active computer code.  Problem started around 11K miles; I have 32K miles, and dealer wont replace parts unless they know they are bad.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11449530,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/30/2022","dateComplaintFiled":"01/31/2022","vin":"3GTU9FEL4LG","components":"SUSPENSION","summary":"A vehicle with 45,000 Miles had ball joint shear from the upper control arm of front left suspension resulting in wheel separation from the ball joint. Similar situations happening with similar 2020 GMC Sierra's (Note: NHTSA Recall Notice, No. 21V718). Could have resulted in a vehicular crash if speed had been increased prior to separation.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11449659,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/01/2022","dateComplaintFiled":"01/31/2022","vin":"3gtu9fel6lg","components":"ELECTRICAL SYSTEM,ENGINE","summary":"I have a lifters problem that the dealership takes more that three weeks to fixed without a loaner car, then i have electrical problems where the truck doesn't start at all without any warning and that's it's dangerous, never now where its going happen","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11442892,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2021","dateComplaintFiled":"12/06/2021","vin":"1GTU9FET9LZ","components":"ENGINE","summary":"The contact owns a 2020 GMC Sierra 1500. The contact stated that shortly after refueling while driving under 15 MPH, the check engine and service emissions warning light illuminated. The contact stated that an unknown reset was performed related to TSB: 10173675 (Engine). The vehicle was not yet fully repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 46,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11441231,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/21/2021","dateComplaintFiled":"11/21/2021","vin":"3gtu9dedxlg","components":"SUSPENSION","summary":"At 8,000 miles I started hearing a clunking noise in my truck when I hit a small bump or back up out of drive way. Brought in and GMC stated it was normal and no issues at walser buick gmc of Roseville. Brought I back again because it was getting worse and could hear it every time I slowed down and accelerated. Then stated they need to order spacer bushings at walser of Bloomington. Then went back for 3rd time and installed them at Bloomington.After 600miles noise was back and is  getting worse again. I called Walser of Bloomington again and said I need to drive it for 1000 miles to break in spacers. So now we have 11,000 miles on truck with same noise again and its going back again because needs to get fixed. GMC is just asking for something to happen. Also when this first happened at 8,482miles I was on 35w and the rear end started wobbling and gave me a small death wobble but I slowed down to control it. That\u2019s when I brought it in and it could of hurt or killed somone.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11440605,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/17/2020","dateComplaintFiled":"11/16/2021","vin":"3GTU9FET8LG","components":"SERVICE BRAKES","summary":"Brakes have been squealing since 4000 mile mark. Dealer states it\u2019s normal.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11438339,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/27/2021","dateComplaintFiled":"10/27/2021","vin":"","components":"TIRES","summary":"The contact owns a 2020 GMC Sierra 1500 equipped with Goodyear Tires, Tire line: Wrangler AT/S, Tire Size: LT275/65/R20, DOT Number: PJOTJB1V. The contact stated while driving 65 MPH, there was a slight wobble and then an impact was felt when the rear passenger\u2019s side tire tread separated and damaged the rear fender and bumper. The contact pulled over and had assistance replacing the rear passenger\u2019s side tire with the spare tire. The dealer was made aware of the failure and was in possession of the failed tire. The manufacturer was not made aware of the failure. The failure mileage was unknown.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"},{"type":"Tire","productYear":"9999","productMake":"GOODYEAR","productModel":"WRANGLER AT/S","size":"LT275/65R20","manufacturer":"Goodyear Tire & Rubber Company"}]},{"odiNumber":11435051,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/24/2021","dateComplaintFiled":"09/30/2021","vin":"3GTP9EEL4LG","components":"ELECTRICAL SYSTEM,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE","summary":"Own a 2020 GMC Sierra AT4 with 13K miles and I owned the truck for 1 year. All of a sudden my vehicle started receiving multiple warning messages.  Electronic Stability Control, Antilock Braking System, ECM, reduced Engine Power, etc.  I see there was a recall for 2019 GMC Sierra's for the same issues. Why isn't 2020 GMC Sierra's not also part of that recall ?  It is ridiculous that a brand new truck has these types of serious issues affecting so many vehicles. Why is GMC allowed to continue to sell later model trucks after the 2019 recall with the exact same ESC and Anti-lock Braking system problems ?","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11434588,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/18/2021","dateComplaintFiled":"09/27/2021","vin":"1gtr8aek4lz","components":"ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE","summary":"Two times while on the freeway the service parking brake and engine lights came on and starting braking. Could not drive over 20 mile an hour.  Both times taking to dealer the lights where not on and they could not find anything wrong.  I even have video of it happening.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11434431,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/21/2021","dateComplaintFiled":"09/26/2021","vin":"3gtu9del9lg","components":"SUSPENSION","summary":"The leaf springs appear to have failed.  The vehicle is available for inspection.  If the leaf spring brakes, control of the vehicle could quickly become an issue.  On 9/24/21 I brought my truck into the local GMC dealer for inspection.  The service technician indicated the leaf springs show \u201cpossible overloading\u201d and recommended air bags to level the truck.  The heaviest load for this truck has been a 4,000 lb. fiberglass fishing boat.  At this time, no one else has inspected the truck.  The truck, when empty, sits lower in the rear than in the front. If a small trailer is attached, it becomes even worse.  Oncoming cars flash their headlights thinking mine are on high beam, which they are not.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11432679,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/02/2021","dateComplaintFiled":"09/12/2021","vin":"1gtu9fel3lz","components":"SUSPENSION,POWER TRAIN,SERVICE BRAKES","summary":"I purchased the 2020 Sierra 1500 because the label on the truck frame states that it can tow 9300lbs. Subsequently, in April 2021, I purchased a 34' Travel Trailer with a max capacity of 8995lbs.  In August, I received a notice from GMC that they overstated the towing capacity by 500lbs.  The new towing capacity is 8800lbs. GMC's response to my request for a refund was that they were not going to help me. Their solution is that I can be provided a new sticker by the dealer upon request.  This does not resolve my issue, nor the issue of other Sierra owners who purchased this vehicle because of its stated towing capacity.  In doing research, it appears that in model year 2014, GMC faced a class action lawsuit for misrepresenting their capabilities.  I believe that this malpractice is a safety concern for me and many others.   Attached is the towing label on the frame and the letter from GM.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11431842,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/04/2021","dateComplaintFiled":"09/06/2021","vin":"3GTP9EED6LG","components":"ELECTRICAL SYSTEM","summary":"Bought 9-4-2020. On 9-4-2021 went start vehicle and no electrical power, battery dead. Will not hold charge to start. Brand new purchased at Morgan GMC in Shreveport Louisiana","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11431592,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/28/2021","dateComplaintFiled":"09/03/2021","vin":"1GTP9EED6LZ","components":"SUSPENSION","summary":"I was driving my 2020 GMC Sierra AT4 at about 15mph on a 2 way city street slowing for a traffic light when my vehicle started to shake violently...at first thinking it was a flat, but the shaking was much different.  As I was slowing in anticipation of the light, now at about 5mph, my truck suddenly dropped and stopped.  This would have been catastrophic at freeway speeds!  I immediately thought maybe someone had tried to steal the wheel overnight as I knew now it was not simply a flat, but knew I had wheels locks and thought that unlikely....this was while I was exiting my now parked truck.  I knew the problem was on the front passenger side, and was shocked as I rounded the vehicle from the front only to find the entire front wheel assembly folded flat under my truck.  The entire brake assembly was still intact, but the front drive shaft was pulled out, as well as the upper and lower ball joints.  The brake hose became severed in this incident.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11431270,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/14/2020","dateComplaintFiled":"08/31/2021","vin":"1GTU9FELXLZ","components":"ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,FORWARD COLLISION AVOIDANCE","summary":"Issue 1: Front left sensor(s), after a rain, car wash and now after an oil change, continuously vibrates the drivers seat and the red light warning stays lite indicating that an obstacle is located near the left front of the truck.  This has happened on several occasions and after a time both indicator stop.    Issue 2: When traveling on a freeway, twice now, the cruise control suddenly disengaged or decreased mileage, as if it had detected a vehicle in front of us.  There was no vehicle within a quarter mile of us front or back, nor any vehicles on the side.  No debris in the road either.  Usually when the adaptive cruise is set and detects something in front the icons on the dash turn orange and starts to flash.  That didn't happen, rather the cruise icon changed to blue in color and the truck slowed.  This I would consider a safety risk.    Both instances (December 2020 and April 2021) have been reported to a dealership and noted in a file. When the customer care person attempted to get malfunction codes, nothing appeared to be wrong with the vehicle.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11428904,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/05/2020","dateComplaintFiled":"08/12/2021","vin":"3GTU9EETXLG","components":"ENGINE","summary":"Repeated issues with exhaust and emissions components.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11428150,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/21/2021","dateComplaintFiled":"08/07/2021","vin":"3gtu9cetxlg","components":"ENGINE","summary":"Found improperly installed rear seals. The truck leaked oil and had to be towed to gmc dealership in Monahans Texas to be repaired. 1 month later the truck leaked oil again.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11425566,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/17/2021","dateComplaintFiled":"07/19/2021","vin":"3GTU9FET2LG","components":"ENGINE","summary":"Rear main oil seal failure causing truck to lose all oil, leaking all over truck, trail leading to drive and garage; possibility of engine seizing up while driving causing an accident, confirmed by dealer, covered by warrenty, is a known issue, no warning lights, messages, or other symptoms of problem, NHSTA has issued a bulletin for this problem","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11420863,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/12/2021","dateComplaintFiled":"06/14/2021","vin":"3Gtu9bed0lg","components":"ELECTRICAL SYSTEM","summary":"Service ESC, Service Power Steering, antilock brakes disabled all flashed on information center of vehicle.   Service engine light, antilock brake light, ESC, low battery all illuminated.  Vehicle would not start - try to start it would go through all issues on information center.   This is the same ESC issue described for 2019 Silverado and GMC Sierras.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11418260,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/22/2021","dateComplaintFiled":"05/24/2021","vin":"3gtp8bek7lg","components":"ELECTRICAL SYSTEM","summary":"The display for the backup camera and infotainment system became blank.  Other owners have the same complaint.  This is a serious safety issue because I was backing up when it went blank.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11418238,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/22/2021","dateComplaintFiled":"05/23/2021","vin":"3gtu9felxlg","components":"SUSPENSION,SERVICE BRAKES,ENGINE","summary":"On Saturday, May 22, 2021, My wife was returning from fairgrounds in Waxahachie, TX. She remote-started the car, and the vehicle started. As it started to rain and was getting muddy, and the grounds are in a grass field (No large rocks, hills or debris to climb as it's cleared land), she shifted the vehicle into 4wd high incase the field was slick. She started to drive and received several warning lights, \"Service ESC, Service traction control, brake light warning and check engine light\". The vehicle also had a noticeable wobble to the wheel and felt off balance, jerky, and had speed limited. My wife turned the vehicle off and back on and some of the lights went off, and the vehicle did not lurch or wobble anymore. The vehicle had a tire changed at the dealer the day prior, so I am unsure if that tire change is related or not. Now the vehicle shows an alert \"check engine, service emissions system\". I am having the vehicle towed to the dealership tomorrow for diagnostics. All lights except the check engine light have since turned off since powering off the vehicle.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11417531,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/14/2021","dateComplaintFiled":"05/17/2021","vin":"1GTU9FEL4LZ","components":"AIR BAGS","summary":"Airbags failed to deploy after striking a street light pole head-on.  The impact hit just right of dead center of the grille and shoved the front end back approximately 2 feet into the engine. There were no dash lights or warning lamps illuminated before the collision. I have notified GM and received a case number. I also have filed an insurance claim and the vehicle has been inspected by a reputable body shop and has been deemed a total loss. A police report was also filed. The vehicle is scheduled to be picked up by the insurance company on 5/18/21.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11414681,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/30/2021","dateComplaintFiled":"05/01/2021","vin":"3GTU9DED3LG","components":"STEERING,ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"IT WAS FINE AND WE DROVE TO OUR NEIGHBOR, PARKED ABOUT 15 MINS. WHEN WE STARTED THE TRUCK TO TURN BACK, THE STEERING WAS SUPER HEAVY, WITH 2 MESSAGES POP UP ON THE DASHBOARD: SERVICES ESC, AND SERVICE POWER STEERING DRIVE WITH CARE. TRIED SEVERAL TIMES TO RE-START THE TRUCK, IT'S KEEP THE SAME.  IN OUR NEIBORHOOD, PARROT TULIP VIEW, PFLUGERVILLE, TX 78660.  RAINING ALL NIGHT, NOT SURE IF IT'S RELATED TO THE WEATHER.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11414107,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/16/2021","dateComplaintFiled":"04/27/2021","vin":"","components":"POWER TRAIN","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500. THE CONTACT STATED THAT UPON EXITING THE VEHICLE, HE NOTICED THAT THE VEHICLE WAS LEAKING AN UNKNOWN FLUID. THERE WAS NO WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO SIMPSON BUICK GMC OF BUENA PARK (6600 AUTO CENTER DR, BUENA PARK, CA 90621) WHERE IT WAS DIAGNOSED WITH THE TORQUE CONVERTER NEEDING TO BE REPLACED. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 11,000. THE VIN WAS UNAVAILABLE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11413341,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/02/2021","dateComplaintFiled":"04/22/2021","vin":"3GTP9EEL6LG","components":"VEHICLE SPEED CONTROL","summary":"THE VEHICLE HAS MADE \"PANIC STOPS\" AT HIGHWAY SPEEDS 5 TIMES WHEN USING ADAPTIVE CRUISE CONTROL WITH NO INPUT FROM DRIVER OR SURROUNDING ENVIRONMENT I.E.. CLEAR ROAD, NO TRAFFIC, SUN OR NO SUN.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11403691,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/16/2021","dateComplaintFiled":"03/18/2021","vin":"1GTR9BED8LZ","components":"STEERING,SERVICE BRAKES","summary":"MY TRUCK TUESDAY MARCH 16TH HAD ME UPDATE SOFTWARE AS SOON AS I GOT TO WORK, AFTER IT WAS DONE I GOT OUT OF MY TRUCK AND IT WOULD NOT LOCK WITH PUSH BUTTON OR FOB. WHEN I GOT INTO MY TRUCK TO GO HOME 10HRS LATER IT MADE A BUNCH OF CLICKING NOISES AND AFTER A MINUTE IT SHOWED UPDATE COMPLETE ON SCREEN THEN STARTED. THE VERY NEXT DAY I DROVE BACK TO WORK WHICH IS 22 MILES. WHEN I TOOK MY TRUCK TO LUNCH THREE BLOCKS AWAY I HAD ESC SERVICE LIGHT AND SERVICE PARKING BRAKE ACCOMPANIED BY CHECK ENGINE LIGHT. I CALLED LOCAL DEALERSHIP TO GET IT LOOKED AT AND THEY SAID FRIDAY WAS AS EARLY AS I COULD GET IT IN.  I LEFT WORK EARLY AT 1:30 AND TRIED TO DRIVE IT AND IT WAS SQUALENE LIKE A BAD POWER STEERING PUMP AND SHAKING AS I DROVE. I WENT AHEAD AND TOOK IT THE DEALER.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11400111,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/09/2021","dateComplaintFiled":"03/10/2021","vin":"1GTU9DED5LZ","components":"SERVICE BRAKES,FORWARD COLLISION AVOIDANCE","summary":"2020 GMC SIERRA SLT VIN:[XXX] 15,700 MILES.  BRAKING SYSTEM FAILURE AT ABOUT 45MPH ON HIGHWAY 78 IN LOGANVILLE, GA APPROACHING AN INTERSECTION WITH RED LIGHT, VEHICLE SEEMED TO LOOSE ALL POWER BRAKING. I STOOD WITH ALL I COULD ON THE PEDAL, AND TURNED TO AVOID REAR ENDING STOPPED VEHICLES, RUNNING INTO MIDDLE OF THE INTERSECTION BEFORE IT STOPPED; NO ACCIDENT !  DEALER IS REPLACING MASTER CYLINDER AND BOOSTER BRAKING SYSTEM, ALONG WITH COMPUTER SYSTEM UPGRADE.    MY CONCERN IS THE DEALERSHIP AND NHTSA IS AWARE OF THIS ISSUE, YET NO CEASE AND DESIST DRIVING DIRECTIVE HAS BEEN ISSUED !    INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11397930,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/25/2021","dateComplaintFiled":"02/25/2021","vin":"1GTU9FEL3LZ","components":"STEERING,ELECTRICAL SYSTEM,UNKNOWN OR OTHER","summary":"WHEN STATIONARY AND PREPARING TO START VEHICLE INTERMITTENTLY  SEE \"SERVICE STEERING COLUMN LOCK\" MESSAGE APPEARS AND DISAPPEAR ONCE VEHICLE IS STARTED. THIS WAS PREVIOUSLY SUPPOSED TO BE ADDRESSED WITH SERVICE BULLETIN 20-NA-21 HOWEVER BEING TOLD BY SERVICE DEPARTMENT THAT VEHICLE HAS ALL CURRENT UPDATES APPLIED A YEAR AGO, INCLUDING THE ONE THAT SHOULD OF ADDRESSED THE ISSUE. TOLD THAT THE VEHICLE HISTORY SHOWS RECORDS OF PAST \"LOSS OF COMMUNICATION TO DIC\" BUT AS THEY CAN'T IMMEDIATELY REPRODUCE NO ACTION WAS TAKEN.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11397727,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/24/2021","dateComplaintFiled":"02/24/2021","vin":"3GTU8CED3LG","components":"EXTERIOR LIGHTING,UNKNOWN OR OTHER","summary":"DANGEROUS VISIBILITY HAZARD WHEN BACKING UP VEHICLE AT NIGHT.  INFOTAINMENT SCREEN SWITCHES TO \"FULL BRIGHTNESS\" WHEN BACKUP CAMERA IS ACTIVATED, RESULTING IN BLINDING LIGHT TO DRIVER. DRIVER CAN NOT BACKUP SAFELY WITHOUT PHYSICALLY COVERING THE SCREEN TO REGAIN VISIBILITY. SCREEN BRIGHTNESS REFLECTS OFF ALL 4 WINDOWS, WINDSHIELD AND BACK GLASS. SIDE MIRRORS ARE UNUSABLE IN THIS CONDITION.    THERE WAS A FIX FOR THIS ISSUE ON PREVIOUS GM MODELS, (PRIOR TO 2018), HOWEVER NO FIX FOR 2019 - PRESENT","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11396914,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/30/2019","dateComplaintFiled":"02/19/2021","vin":"1GTU9FEL7LZ","components":"TIRES","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500 EQUIPPED WITH BRIDGESTONE TIRES, TIRE LINE: ALENZA A/S 02, TIRES SIZE: 275/50/R22, DOT NUMBER: UNKNOWN. THE CONTACT STATED THAT THE TIRES FAILED TO HOLD THE TIRE PRESSURE. THE VEHICLE WAS TAKEN TO SCENIC CHEVROLET BUICK GMC CADILLAC (2300 ROCKFORD ST, MT AIRY, NC 27030) WHERE THE VEHICLE WAS PURCHASED. THE TECHNICIAN ADDED NITROGEN GAS INTO THE TIRES HOWEVER, THE FAILURE PERSISTED. THE CONTACT STATED THAT A LETTER WAS SENT TO THE MANUFACTURER HOWEVER, THERE WAS NO RESPONSE. THE FAILURE MILEAGE WAS 2,976.  *JS *JS","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"},{"type":"Tire","productYear":"9999","productMake":"BRIDGESTONE","productModel":"BRIDGESTONE","size":null,"manufacturer":"Bridgestone Americas Tire Operations"}]},{"odiNumber":11397032,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/09/2020","dateComplaintFiled":"02/19/2021","vin":"3GTU9DELXLG","components":"ELECTRICAL SYSTEM","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500. THE CONTACT STATED WHILE DRIVING, THE SIDE VIEW MIRROR'S BLIND SPOT ALERTS ON BOTH SIDES ENGAGED WITH NO VEHICLE NEARBY. THE VEHICLE WAS TAKEN TO TURNER BUICK GMC (612 E MAIN ST, NEW HOLLAND, PA 17557) WHERE THE CONTACT WAS INFORMED THAT THE SENSORS WERE DIRTY. THE CONTACT THEN WASHED THE VEHICLE HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 400. THE VIN WAS NOT AVAILABLE. *BF","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11396687,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/16/2021","dateComplaintFiled":"02/17/2021","vin":"3GTU9DET8LG","components":"STEERING","summary":"THE STEERING WILL COMPLETELY LOCK UP, THIS IS THE 2ND OCCURRENCE.  IT WAS AT THE DEALER 1143 MILES AGO AND CODES WERE CLEARED, PROBLEM REOCCURRED.  I WAS ABLE TO START THE VEHICLE, PUT IN DRIVE/REVERSE NEUTRAL ETC WITHOUT ISSUES, HOWEVER THE STEERING WAS COMPLETELY LOCKED UP AND WOULD NOT ALLOW STEERING/CONTROL OF THE VEHICLE.   THE VEHICLE WAS PARKED IN DRIVEWAY, COLD OUTSIDE BOTH TIMES.  I HAVE VIDEO EVIDENCE.  THE FIRST OCCURRENCE 12/26/2020 AT 9591 MILES, 2ND OCCURRENCE 2/16/2021 AT 10733 MILES (1142 MILES LATER)","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11396371,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/15/2021","dateComplaintFiled":"02/15/2021","vin":"1GTU9DED0LZ","components":"VISIBILITY/WIPER","summary":"WHILE DRIVING ON A STATE HIGHWAY, I HEARD A \"POP\" SOUND,  I SAW NOTHING CONTACT THE VEHICLE, BUT I THEN NOTICED THE WINDSHIELD WAS CRACKED.  THE WINDSHIELD CRACKED FOR NO APPARENT REASON..","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11394363,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/29/2021","dateComplaintFiled":"02/02/2021","vin":"3GTU9BED9LG","components":"ENGINE","summary":"AT ABOUT 3500 MILES LIFTERS ON TWO CYLINDERS COLASPED.  TOOK TO DEALER THAT DEALER HAD THREE WEEKS BUT FIXED IT.  1500 MILES LATER AT 5036 MILES IT HAPPENED AGAIN ON A DIFFERENT CYLINDER.  NUMBER 8.  THE FIRST TIME IT WAS 3 AND 5.  THE FIRST TIME THE DEALER REPLACED ALL 8 CYLINDERS.  SO CYLINDER NUMBER 8 WAS NEW AS WELL.  GMC HAS SAID THERE IS NOTHING ELSE THAT CAN BE DONE TO FIX THE ISSUE.  THE SECOND DEALER SERVICE MANAGER STATES THAT HE WOULD NOT TRUST IT EITHER TO GO ANY LONG DISTANCE .  ALSO STATED THAT THEY HAVE PUT 3 SETS IN TO ONE VEHICLE  BEFORE.  AS AN ASE MASTER CERTIFIED TECHNICIAN I FIND THIS DISTURBING.   I ALSO WAS A GMC,PONTIAC, OLDSMOBILE MASTER TECHNICIAN. THIS IS UNEXCEPTABLE FOR GM TO THINK THIS IS OK TO TAKE PEOPLE'S HARD EARN MONEY AND NOT FIX THERE ISSUES OR MAKE IT RIGHT.   I OWNED  A 2014,2016,2018 SILVERADO'S THAT HAD NO ISSUES WHAT SO EVER.  TO MAKE THINGS WORST GMC ROAD SIDE ASSISTANCE FORGOT ABOUT THE TRUCK BROKE DOWN IN 7 DEGREE WEATHER WITH 35 MILE AN HOUR WINDS. FOR OVER 24 HOURS AND SEVERAL CALLS BACK TO FINALLY GET A SUPERVISOR TO SPEAK TO.  TWO DEALERS SAY THAT IT IS UNACCEPTABLE EXCEPT THE CURRENT DEALER THAT IS DEALING DIRECTLY WITH GMC.  ANYONE CAN DO A SEARCH ON GM TRUCK LIFTERS COLLAPSING AND YOU IMMEDIATELY OVERWHELMED WITH INFO.   IT IS ALSO DISTURBING THAT A DEALERSHIP SERVICE  MANAGER SAYS WE COULD PUT A NEW ENGINE IN AND THE SAME THING COULD HAPPEN.  THAT TO ME IS POOR QUALITY CONTROL AND POOR CUSTOMER SERVICE.  I HAVE ALWAYS BEEN A GM ENTHUSIASTS  BUT THIS WILL BE MY LAST ONE.  HORRIBLE CUSTOMER SERVICE AND DO NOT BUILD A GOOD PRODUCT OR STAND BEHIND IT.  GM SHOULD BE ASHAMED OF THERE FALL FROM GRACE. THIS ALL HAPPENED  JUST DRIVING ONCE TO WORK AND ONCE HAULING A ATV ON A TRAILER.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11390959,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/31/2021","dateComplaintFiled":"02/01/2021","vin":"3GTP9EED1LG","components":"VISIBILITY/WIPER","summary":"WIPERS FROZE TO WINDSHIELD WHILE DRIVING WITH DEFROSTER ON MAX.  DESIGN OF THE WINDSHIELD AND DASH MEANS WIPERS SIT LOWER THAN WHERE THE DASH AND WINDSHIELD MEET, AND NO WARM AIR FROM THE DEFROSTER CAN GET TO THE WINDSHIELD WHERE THE WIPERS SIT.  THERE IS NO IN WINDOW DEFROSTER (LIKE REAR WINDOW) WHICH CAN HELP.  MAJOR SAFETY ISSUE IN SNOW/ICE CONDITIONS.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11388120,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/02/2021","dateComplaintFiled":"01/14/2021","vin":"3GTU9DED6LG","components":"ENGINE,LANE DEPARTURE,FORWARD COLLISION AVOIDANCE","summary":"WITHIN 3 MONTHS (<4000 MILES) FROM PURCHASE VEHICLE BEGAN SPUTTERING WITH HESITATION, AND TICKING NOISE FROM ENGINE WHILE IN MOTION FOLLOWED BY MULTIPLE ALERTS POSTING ON DRIVER DISPLAY.  VEHICLE DISPLAYS LOSS OF POWER, AND STRUGGLES TO KEEP UP WITH TRAFFIC.  CHECK ENGINE LIGHT FLASHING FOLLOWED BY CONSTANTLY STAYING ON, SERVICE ESC SYSTEM ACTIVATED, SERVICE PARKING BRAKE, AND STEERING ASSIST REDUCED DRIVE WITH CAUTION LIGHTS ALL ACTIVATED DURING THIS EPISODE.  DEALER WORKED ON VEHICLE ENGINE ( AND COMPLETED ON OR AROUND 1/08/2021), AND REPLACED LIFTERS, AND OIL CONTROL VALVE.  ON 01/13/2021 NOTICED THAT VEHICLES LANE KEEP ASSIST IS NOW WORKING SPORADICALLY, WILL NOT ACTIVATE CONSISTENTLY WHEN VEHICLE VEERS OFF THE PROPERLY MARKED LANES ON HIGH-WAY/ROADS, AND INCONSISTENTLY ALERTS DRIVER WHILE IN MOTION.  THE LANE KEEP ASSIST IS SUPPOSE TO CORRECT STEERING, BUT THIS DOES NOT HAPPEN CONSISTENTLY.  THE COLLISION ALERT SYSTEM DOES NOT ACTIVATE OR WORK CORRECTLY.  NOTICED WHILE DRIVING THAT VEHICLES IN FRONT ARE NOT DETECTED CORRECTLY, AND INFORMS THE DRIVER THEY ARE WITHIN SAFE DISTANCE (GREEN THIS SUDDENLY CHANGES TO YELLOW).  IN ADDITION WHEN VEHICLES IN FRONT APPLY BRAKE, THE COLLISION ALERT SYSTEM DOES NOT ALERT AS IT IS SUPPOSED TO, IT STAYS IN GREEN EVEN AT EXTREMELY CLOSE RANGE.  SAFETY MECHANISMS DON'T APPEAR TO WORK CORRECTLY, AND DETECTS ITEMS THAT ARE NOT PRESENT.  NOTICED THAT VEHICLE DETECTS LANES EVEN ON UNMARKED ROADS, AND THE FRONT PEDESTRIAN ALERT SYSTEM ACTIVATES SPORADICALLY EVEN IF NO PEDESTRIANS ARE IN FRONT OF VEHICLE WHILE DRIVING.  CONCERNED ABOUT SAFETY FEATURES LEADING TO HAZARDOUS DRIVING CONDITIONS.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11387889,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/14/2020","dateComplaintFiled":"01/13/2021","vin":"1GTR9BEK5LZ","components":"STEERING,ELECTRICAL SYSTEM","summary":"ON DECEMBER 14, 2020 MY SIERRA WITH 2339 MILES DISPLAYED, AT STARTUP, THE POWER STEERING WAS OUT, TO DRIVE WITH CARE. ALSO DISPLAYED SERVICE ESC AND TRACTION CONTROL FAILURES. I DROVE WITH MUCH DIFFICULTY, WITHOUT POWER STEERING, TEN MILES TO THE NEAREST GMC DEALERSHIP, LAFONTAINE IN HIGHLAND, MI. I PICKED UP THE VEHICLE ON DECEMBER 29, 2020 WITH AN ADDITIONAL 60 MILES. THE SERVICE PERSONNEL SAID THEY WERE UNABLE TO DUPLICATE THE PROBLEM, THEREFORE NO REPAIRS WERE MADE. LAFONTAINE HAD CONTACTED GENERAL MOTORS TECH CENTER WHO OFFERED NO SOLUTIONS OTHER THAN CHECKING THE BATTERY AND WIRING HARNESS CONNECTIONS. THE PROBLEM HAS NOT REAPPEARED IN THE FIFTEEN DAYS SINCE I PICKED UP MY VEHICLE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11387170,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/06/2021","dateComplaintFiled":"01/08/2021","vin":"1GTU9DED9LZ","components":"ELECTRICAL SYSTEM","summary":"[XXX]    INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).  *TR","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11386106,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/23/2020","dateComplaintFiled":"01/02/2021","vin":"3GTU9DED7LG","components":"ENGINE,FORWARD COLLISION AVOIDANCE","summary":"THE ENGINE FAILED AT 5100 MILES AND IS CURRENTLY BEING REPAIRED BY THE DEALERSHIP. I REQUESTED A NEW CAR REPLACEMENT.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11385700,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/30/2020","dateComplaintFiled":"12/30/2020","vin":"3GTU9BED1LG","components":"POWER TRAIN,SERVICE BRAKES","summary":"CAR WAS IDLING AND PARKED. WARNING CODE SHOWED UP ON DASHBOARD ESC, ELECTRONIC STABILITY CONTROL, REDUCED ENGINE POWER. VEHICLE THEN DISPLAYED TRANSMISSION DISRUPTION, WARNING LIGHT DISPLAYED AS WELL. I WAS ABLE TO DRIVE IT TO THE DEALERSHIP BUT THE PERFORMANCE OF THE VEHICLE WAS LIMITED BY THE REDUCED ENGINE POWER. TRANSMISSION WAS HESITATING AND CLUNKY DURING GEAR CHANGES.  MY SIERRA HAS 5,000 MILES ON IT AND THE TRANSMISSION WAS ALREADY REPLACED AT 2,000 MILES. GMC HAS A SERIOUS PROBLEM WITH THIS MAKE AND MODEL. UNSURE WHAT THE RESOLUTION WILL BE, BUT I AM NO LONGER CONFIDENT IN THE PRODUCT GMC IS SELLING.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11385428,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":1,"numberOfDeaths":0,"dateOfIncident":"12/19/2020","dateComplaintFiled":"12/29/2020","vin":"3GTU9BED3LG","components":"AIR BAGS","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 35 MPH THE DRIVER LOST CONTROL OF THE VEHICLE AND DROVE OFF THE ROAD AND DOWN AN EMBANKMENT BEFORE CRASHING TO THE GROUND. DURING THE CRASH THE VEHICLE SUSTAINED SEVERE DAMAGE TO THE FRONT END BUT THE  AIR BAGS DID NOT DEPLOY. THE DRIVER SUSTAINED HEAD AND SHOULDER INJURIES WHICH REQUIRED MEDICAL TREATMENT. THE VEHICLE WAS TOWED AWAY. NO POLICE REPORT WAS TAKEN. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE LOCAL DEALER MAYSE EARNHARDT AUTO GROUP LOCATED AT 2032 S ELLIOTT AVE, AURORA, MO WAS NOTIFIED OF THE FAILURE. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 10,000.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11384265,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/20/2020","dateComplaintFiled":"12/20/2020","vin":"3GTU9DED9LG","components":"ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"ON TWO SEPARATE OCCASIONS, THE TRUCK HAS BEEN DEAD WHEN ATTEMPTING TO CRANK.  THERE WERE NO LIGHTS OR DEVICES LEFT ON AFTER THE PREVIOUS TIME THE TRUCK HAD BEEN USED.  SOMETHING IS DRAWING POWER FROM THE BATTERY CAUSING IT TO BE DEAD.  AFTER RECHARGING THE BATTERY, THE CHECK ENGINE CODES READ THAT THERE IS A PROBLEM WITH 'BRAKE LIGHT ILLUMINATION.'  HELP IN DETERMINING WHA  T IS CAUSING THE BATTERY TO DIE ON SUCH A NEW VEHICLE WOULD GREATLY APPRECIATED!  I'M UNCERTAIN AT THIS TIME AS TO WHETHER OR NOT THE BRAKE LIGHT ILLUMINATION IS CAUSING A SAFETY HAZARD.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11382957,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/10/2020","dateComplaintFiled":"12/10/2020","vin":"1GTU9CED9LZ","components":"ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"AFTER HAVING ALL SORTS OF WARNINGS OVER TIME LIKE \"SERVICE ESC,\" \"SERVICE PARKING BRAKE,\" AND MORE, I NOW SEE \"BRAKE SYSTEM FAILURE: 62 MPH TOP SPEED\" FLASH ACROSS MY DASH. I AM READING AND HEARING THAT THIS IS A VERY DANGEROUS PROBLEM. NEW TRUCK. BRAND NEW. HAD IT LESS THAN A YEAR. BRAKE MESSAGE ALWAYS ON START UP.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11377941,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/14/2020","dateComplaintFiled":"12/04/2020","vin":"1GTU9CED3LZ","components":"ELECTRICAL SYSTEM,ENGINE","summary":"THERE IS NO WAY TO PERMANENTLY DISABLE THE AUTO START STOP ON THE VEHICLE. SEVERAL OTHERS HAVE COMPLAINED ABOUT THIS, NO RESPONSE FROM GM. THERE NEEDS TO BE A FIRMWARE UPGRADE TO THE ECM TO ALLOW THE OWNER MAKE THE DECISION ON IF THAT IS ENABLED OR DISABLED. ON MINE, I HAVE TO PUSH A BUTTON EACH TIME I START THE ENGINE TO DISABLE THAT. SOME GM VEHICLES DON'T HAVE THAT OPTION.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11375643,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/25/2020","dateComplaintFiled":"11/20/2020","vin":"3GTU9CED3LG","components":"ENGINE","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE PUSH START BUTTON AND KEY FOB FAILED TO START THE VEHICLE ON FIRST ATTEMPT. THE CONTACT STATED THAT THE VEHICLE STARTED AFTER SEVERALS ATTEMPTED. THE CONTACT STATED THE FAILURE OCCURRED INTERMITTENTLY.  THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT STATED THAT ON HIS WAY TO MCKENZIE BUICK-GMC DEALER, 6500 CAROLINE ST, MILTON, FL 32570, THE CHECK ENGINE WARNING LIGHT WAS NOT ILLUMINATED, THE VEHICLE WAS DIAGNOSED AND THE CONTACT WAS INFORMED THAT A FAILURE CODE WAS NOT FOUND. THE VEHICLE WAS NOT REPAIRED. HOWEVER, THE CONTACT CALLED BACK THE SAME DEALER AND INFORMED THEM THAT THE FAILURE RECURRED. THE VEHICLE WAS NOT YET TAKEN BACK TO THE DEALER. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 86.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11373466,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"11/05/2020","dateComplaintFiled":"11/06/2020","vin":"3GTU9DED4LG","components":"ELECTRICAL SYSTEM,SEAT BELTS","summary":"KEEP GETTING \"SERVICE SAFETY RESTRAINT SYSTEM \" ALERTS. VEHICLE ONLY HAS 550 MILES. ALERTS ARE INTERMITENT WHEN DRIVING.  CONTACTED THE DEALER AND WAS ADVISED THAT UNLESS IT REMAINS ON THEY COULD NOT TRACE THE ISSUE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11362024,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/30/2020","dateComplaintFiled":"09/30/2020","vin":"3GTP8CED3LG","components":"VISIBILITY/WIPER","summary":"BACK UP CAMERA IS AWFUL AT NIGHT. THIS IS A SAFETY ISSUE BECAUSE YOU CANNOT SEE ANYTHING WHEN BACKING UP. MY TRUCK HAS 323 MILES ON IT AND I WENT TO DEALERSHIP THEY SAID I WOULD HAVE TO LIVE WITH IT. THAT IS NOT ACCEPTABLE TO HAVE A SAFETY FEATURE THAT IS FAULTY.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11361352,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/29/2020","dateComplaintFiled":"09/27/2020","vin":"1GTP9EELXLZ","components":"ENGINE","summary":"VEHICLE EQUIPPED WITH L87 6.2L.  AT 197 MILES ENGINE SUDDENLY CEASED OPERATING AND WOULD NOT RESTART.  THIS OCCURRED WHILE STOPPED ON PRIVATE ROAD.  VEHICLE HAD TO BE TOWED TO DEALERSHIP WHERE THEY FOUND P0300 AND DIAGNOSED BROKEN #4 CYLINDER EXHAUST VALVE SPRING.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11360821,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/17/2020","dateComplaintFiled":"09/23/2020","vin":"1GTP8DETXLZ","components":"POWER TRAIN","summary":"TRANSMISSION KICKS WHEN COMING TO A COMPLETE STOP.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11360829,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/21/2020","dateComplaintFiled":"09/23/2020","vin":"1GTU9CED9LZ","components":"STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"EVERYTHING WAS FINE FOR ABOUT 6 MONTHS AFTER HAVING PURCHASED VEHICLE AS NEW. THEN I GOT WARNING LIGHTS ASKING ME TO BOTH SERVICE THE PARKING BREAK AND SERVICE ESC WITH A WARNING THAT DRIVING WOULD BE COMPROMISED JUST OVER 60MPH. I NOTIFIED DEALER WHO SAYS THEY FIXED THE GLITCH BUT IT HAPPENED AGAIN. THE LAST TIME, MOST RECENTLY, I TRIED TO START THE TRUCK THE NEXT DAY AND ALL THE WARNING LIGHTS CAME ON. THIS WAS FOLLOWED BY A COMPLETE SHUT DOWN. NO ENGINE, NO LIGHTS - NOT EVEN LOCK/UNLOCK WITH KEY FOB. IT HAD TO BE TOWED. THIS IS A 2020 VEHICLE AND SEEMS LIKE IT WILL STRAND ME SOME PLACE AT THE VERY LEAST. AWFUL, EXPENSIVE, AND PERHAPS DEADLY DYNAMICS HERE. GMC, GET YOUR ACT TOGETHER. YOU OWE US IMMEDIATELY. PROVIDE THE FIX IMMEDIATELY OR GIVE ME MONEY BACK WITH NO CONTEST.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11355680,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/01/2020","dateComplaintFiled":"09/17/2020","vin":"3GTN9AEF7LG","components":"ELECTRICAL SYSTEM","summary":"DISPLAY IS DANGEROUSLY TOO BRIGHT WHEN BACKING UP   CANNOT SEE TO BACK UP VEHICLE SAFELY","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11354972,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"09/14/2020","dateComplaintFiled":"09/14/2020","vin":"3GTU9DET5LG","components":"ELECTRICAL SYSTEM","summary":"VEHICLE DOES NOT START AND FLASHING VARIOUS CODES SERVICE JUST ABOUT EVERYTHING ON THE VEHICLE","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11353198,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/22/2020","dateComplaintFiled":"09/04/2020","vin":"1GTR8CEK8LZ","components":"ELECTRONIC STABILITY CONTROL (ESC),SERVICE BRAKES,ENGINE","summary":"MY 2020 GMC SIERRAS BRAKES FAILED ON MAY 22ND  AND ECM AND NOW THE ENGINE AND TRANSMISSION ARE EXPERIENCING ISSUES BASED ON THE ONSTAR REPORT.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11353254,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/02/2020","dateComplaintFiled":"09/04/2020","vin":"3GTU9CED5LG","components":"ELECTRICAL SYSTEM","summary":"THE NIGHT TIME BACKUP CAMERA IS REALLY BRIGHT AND BLURRY AND IT MAKES IT HARD TO SEE WHEN BACKING AT NIGHT","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11352041,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/29/2020","dateComplaintFiled":"08/29/2020","vin":"3GTU9CED8LG","components":"STEERING,ELECTRONIC STABILITY CONTROL (ESC),ENGINE","summary":"PARKED TRUCK FOR ONE HOUR, ENGINE OFF. CAME BACK AND UPON STARTUP, RECEIVED MULTIPLE ERRORS THAT POWER STEERING AND ESC REQUIRED DEALER ATTENTION. BRAKE PEDAL WOULD DEPRESS TO FLOOR. GMC SIERRA 1500 ELEVATION TRIM","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11351746,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/24/2020","dateComplaintFiled":"08/28/2020","vin":"3GTU9AEFXLG","components":"ELECTRICAL SYSTEM,SERVICE BRAKES","summary":"ELECTRONIC ABS BRAKE FAILURE WITH 73 MILES ON ODOMETER WHILE STOPPED AT RED LIGHT ALARM CHIMES SOUNDED AND POWER BRAKES WERE LOST. WARNING LIGHTS ON DASH ABS BRAKE FAILURE MULTIPLE ENGINE WARNING LIGHTS CAME ON.  DEALER SERVICE WAS PUZZLED NEEDED TO CONTACT GM TECHNICAL SUPPORT. FINAL OUTCOME THEY ARE REPLACING THE ELECTRONIC BRAKE MODULE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11348853,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/11/2020","dateComplaintFiled":"08/12/2020","vin":"","components":"STEERING","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE WAS AT A STAND STILL IN A HOSPITAL PARKING LOT, WHEN THE STEERING WHEEL CEASED. THE CONTACT STATED THAT THE POWER STEERING ASSIST WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS NOT DRIVABLE. THE VEHICLE WAS TOWED TO LOCAL DEALER PHILLIPS BUICK GMC LOCATED AT 2160 US-441 #27, FRUITLAND PARK, FL 34731, (352) 728-1212, HOWEVER THE MECHANIC WAS UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE HAD NOT BEEN REPAIRED AS OF YET. THE MANUFACTURER HAD NOT BEEN INFORMED OF FAILURE. THE FAILURE MILEAGE WAS 1,000. THE VIN WAS NOT AVAILABLE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11348905,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/12/2020","dateComplaintFiled":"08/12/2020","vin":"3GTP9EEL3LG","components":"POWER TRAIN,ELECTRICAL SYSTEM","summary":"AT 550 MILES HAD TO TOW TO DEALER. THEY SAID NEEDED TO REPROGRAM TRANSMISSION. NOW AT 4000 MILES, WENT TO START AND VEHICLE WILL NOT DO ANYTHING. NO POWER. IT IS BEING TOWED TO DEALER AGAIN. PRETTY MUCH BOUGHT A LEMON AS IT LOOKS NOW.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11342372,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/18/2020","dateComplaintFiled":"07/30/2020","vin":"3GTU9DED8LG","components":"ELECTRICAL SYSTEM","summary":"BATTERY WAS DEAD IN THE GARAGE.   CALLED ROAD SIDE ASSISTANCE WHO JUMP-STARTED CAR.  CAR WOULD NOT GO INTO GEAR.  WE ROLLED IT OUT INTO DRIVEWAY WHERE IT SAT FOR 24 HOURS.  WHEN IT WAS LOADED FOR TRAVEL TO DEALERSHIP, IT CRANKED AND WAS DRIVEN UP ON WRECKER TRAILER LIKE IT HAD NO APPARENT PROBLEMS.  WAS CARRIED TO DEALERSHIP WHERE THEY RECHARGED AND CHECKED THE BATTERY AND RESET 14 DIFFERENT CODES WHICH WERE LOST WITH THE LOW VOLTAGE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11340264,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/02/2020","dateComplaintFiled":"07/19/2020","vin":"3GTU9FED8LG","components":"ELECTRICAL SYSTEM","summary":"BRAND NEW TRUCK PURCHASED IN MAY 2020. VEHICLE WOULD NOT START ON 7/2/2020 AND A NEW BATTERY WAS PLACED IN THE VEHICLE. THE TRUCK WOULD NOT START AGAIN ON 7/17/2020 UNKNOWN REASONS...","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11339633,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"07/15/2020","dateComplaintFiled":"07/15/2020","vin":"1GTR8CEK3LZ","components":"UNKNOWN OR OTHER","summary":"AFTER VEHICLE SITS IDLE FOR A WHILE, THE VEHICLE MAKES A HIGH PITCH WHISTLING SOUND ON STARTUP THAT LAST FOR APPROXIMATELY MINUTE OF DRIVING.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11339260,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/10/2020","dateComplaintFiled":"07/14/2020","vin":"3GTU9AEFXLG","components":"STEERING","summary":"2020 GMC SIERRA STEERING ISSUES. LOSS OF COMMUNICATION BETWEEN MODULES. RESULTS IN LOCKED STEERING OR NO POWER STEERING ASSIST. HAPPENS RANDOMLY AT VEHICLE START UP. BEEN TO THE DEALER FOUR TIMES SO FAR. THE FIRST TWO WAS INFORMED THERE'S NOTHING WRONG WITH IT. REPAIRS ATTEMPTED, UPDATE SOFTWARE, ENGINE HARNESS REPAIR, AND STEERING MODULE REPLACEMENT.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11330494,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/19/2020","dateComplaintFiled":"06/24/2020","vin":"3GTU9FET4LG","components":"EQUIPMENT,UNKNOWN OR OTHER","summary":"NAVIGATION STATES TO TURN RIGHT WHEN IT SHOULD BE LEFT OR VICE VERSA. THIS WAS A PROBLEM  ON THE 2016-2017 MODELS ALSO.  *TR","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11329324,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":1,"numberOfDeaths":0,"dateOfIncident":"05/21/2020","dateComplaintFiled":"06/17/2020","vin":"1GTR8CEK8LZ","components":"STEERING,SERVICE BRAKES","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING AT 25 MPH, THE SYSTEM BRAKE FAILURE WARNING MESSAGE ILLUMINATED ON THE INSTRUMENT PANEL. ONCE THE WARNING LIGHT ILLUMINATED, THE CONTACT EXPERIENCED COMPLETE BRAKE AND STEERING FAILURE. THE CONTACT WAS ABLE TO STEER THE VEHICLE INTO A CURB TO SLOW DOWN THE VEHICLE AND AVOID A POSSIBLE COLLISION WITH ANOTHER VEHICLE. THE CONTACT STATED THAT HE HAD SUFFERED PAIN TO HIS LEFT SHOULDER BLADE AND LEFT KNEE; HOWEVER, HE DID NOT SEEK MEDICAL ATTENTION DUE TO COVID-19. AFTER EXPERIENCING THE FAILURE, THE CONTACT HAD THE VEHICLE TOWED TO DESERT SUN MOTORS, INC. (2600 N WHITE SANDS BLVD, ALAMOGORDO, NM 88310) WHERE THEY CLEARED THE SYSTEM'S COMPUTER AND INFORMED THE CONTACT THAT THEY FOUND NO DEFECTS WITH THE VEHICLE. UPON RETURN OF THE VEHICLE, HE EXPERIENCED ANOTHER BRAKE FAILURE AS THE CHECK ENGINE LIGHT ILLUMINATED WHILE DRIVING AT 55 MPH. DUE TO THE FAILURE, THE CONTACT WAS FORCED TO RUN A RED LIGHT AND DRIVE UP AN INCLINE IN ORDER TO BRING THE VEHICLE TO A COMPLETE STOP. THE VEHICLE WAS THEN TOWED SHAMALEY BUICK GMC (955 CROCKETT ST, EL PASO, TX 79922) WHERE IT REMAINED IN THEIR POSSESSION. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND A FIELD INSPECTOR WAS SENT TO INSPECT THE VEHICLE. THE CONTACT STATED THAT KNOW BRAKE FAILURE CODES WERE DETECTED. THE CONTACT STATED AFTER THE THIRD FAILURE THE VEHICLE WAS TOWED TO SHAMALEY GMC WHERE IT WAS AWAITING DIAGNOSIS.  THE VEHICLE HAD YET TO BE REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11328737,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/12/2020","dateComplaintFiled":"06/14/2020","vin":"3GTU9DED3LG","components":"SUSPENSION,ELECTRONIC STABILITY CONTROL (ESC),SERVICE BRAKES","summary":"HIGHWAY DRIVING ENGINE LIGHT STARTED FLASHING, RECEIVED CODES ON SERVICE ESC AND SERVICE PARKING BRAKE. TRUCK SEEMED TO LOOSE POWER TRANSMISSION STARTED SHIFTING VERY HARD, CRUSE DISENGAGED,LANE KEEP ASSIST STOPPED WORKING , BRAKES AND STEERING SEEMED TO ACT DIFFERENT . WHEN IGNITION WAS TURNED OFF LOUD NOISES FROM UNDER TRUCK SOUNDED LIKE BRAKES RELEASING WITH LOUD CLUNKING NOISE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11326110,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"05/26/2020","dateComplaintFiled":"05/27/2020","vin":"3GTU9FEL7LG","components":"ENGINE","summary":"RUPTURED OIL COOLER LINE. DRAINING THE ENGINE OF OIL AND CAUSING LOCK-UP.  *TR","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11326057,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/01/2020","dateComplaintFiled":"05/26/2020","vin":"3GTU9CED6LG","components":"UNKNOWN OR OTHER","summary":"CAN NOT SEE ANYTHING BACKING UP IN THE DARK BECAUSE OF BACKUP CAMERA. THE PICTURE ON THE SCREEN IS GRAINY AND WASHED OUT SO ALL YOU SEE ARE BLOBS OF NOTHING.  *TR","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11324017,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/03/2020","dateComplaintFiled":"05/10/2020","vin":"1GTP8CED9LZ","components":"ENGINE","summary":"ENGINE LIKE KEEPS COMING ON. CODE READING THE KNOCK SENSOR NEEDS TO BE REPAIR. SENSOR HAS BEEN REPLACE TWICE IN THE PAST THREE MONTHS.  *TR","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11322885,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"04/29/2020","dateComplaintFiled":"04/30/2020","vin":"3GTU9BET2LG","components":"ELECTRICAL SYSTEM","summary":"REVIEW CAMERA IS EXTREMELY BRIGHT WHEN BACKING. IT'S SO BRIGHT THAT A GLARE IS THROWN ONTO REAR WINDOW MAKING IT NEXT TO IMPOSSIBLE TO SEE OUT REAR WINDOW OR USE SIDE VIEW MIRRORS. I OFTEN REVERT TO TO OPEN DRIVERS DOOR AND LOOKING BACKWARDS THAT WAY. SOMEONE IS GOING TO GET RUN OVER AS YOU CANNOT SEE WHERE YOU ARE BACKING. VERY DANGEROUS!","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11315961,"manufacturer":"General Motors, LLC","crash":true,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"03/03/2020","dateComplaintFiled":"03/04/2020","vin":"3GTU9DEL4LG","components":"SERVICE BRAKES","summary":"THE ABS SYSTEM  FAILED WHILE DRIVING DOWN THE ROAD CAUSING THE BRAKES TO LOCK UP AND CAUSED THE TRUCK TO SPIN OUT OF CONTROL NEARLY CRASHING INTO ANOTHER VEHICLE AND JUMPING OVER THE CENTER DIVIDE  INTO ONCOMING TRAFFIC.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11310853,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/22/2020","dateComplaintFiled":"02/23/2020","vin":"3GTU9CED4LG","components":"STEERING,ELECTRONIC STABILITY CONTROL (ESC),SERVICE BRAKES","summary":"I WAS GOING ABOUT 15 MILES PER HOUR WHEN SUDDENLY ALL THESE ERROR CODES STARTED POPPING UP, FIRST \"ESC MALFUNCTION\" THEN TRAILER BRAKE MALFUNCTION,STABILITRAK, STEERING ASSIST REDUCED, BRAKE SYSTEM FAIL, LIGHS JUST POP UP I DO FEEL LIKE THE TRUCK LOOSES SOME POWER FEELS MORE SLUGGISH, I TOOK IT TO DEALERSHIP, THEY RECALIBRATED THE BREAK SYSTEM AND STUFF, IT FIXED THE ISSUE TEMPORARILY, BUT THE LIGHTS KEEP COMING BACK, SOMETIMES I TURN THE TRUCK ON IN THE MORNING AND LIGHTS ARE GONE, THEN LATER ON I GET ALL THE ERROR CODES AGAIN WHILE DRIVING IT. IT STARTED 4 DAYS AFTER I PURCHASED THE TRUCK AND HAPPENS DAILY SINCE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11310256,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/19/2020","dateComplaintFiled":"02/19/2020","vin":"1GTU9FEL0LZ","components":"SERVICE BRAKES","summary":"2020 GMC 6.2 L V8 1500 4W SIERRA DENALI.   BOUGHT YESTERDAY NEW FROM DEALERSHIP.  TODAY, NOT EVEN 120 MILES AND  BRAKES MALFUNCTIONED.    I STARTED TRUCK WITH GMC APP.  GOT IN CAR WITH MY FAMILY AND AS I PULLED OUT OF PARKING STALL PUSHING ON BRAKES MET EXTREME RESISTANCE AND SLUGGISHLY CAME TO A STOP.   I PUT TRUCK IN PARK. SHUT  OFF AND TURNED BACK ON.   BRAKES STILL NOT FUNCTIONING.   'BRAKES' 'ABS' AND ICONS FOR TRACTION CONTROL AND CHECK ENGINE LIGHTS WERE ON.   AGAIN ATTEMPTED TO DRIVE.  DRIVING 20 MPH  WOULD TAKE GREATER THAN 50 YARDS TO STOP, WITH ME, 220# ATHLETIC MALE APPLYING FULL FORCE.     WARNING MESSAGE ALSO APPEARED 'BRAKE SYSTEM FAILURE MAX SPEED 62 MPH'.  NO IDEA WHERE 62 WAS FORMULATED.  ALSO SOME MESSAGE ABOUT TRAILER BRAKES CAME ON TOO.   NO TRAILER WAS ATTACHED. I SHUT TRUCK OFF.  30 MINUTES LATER STARTED, CHECK ENGINE LIGHT WAS ONLY LIGHT ON. BRAKES WORKED NORMAL.   WAS ABLE TO CAUTIOUSLY GET 3 MILES HOME.   THIS IS A POTENTIALLY FATAL FLAW.  AGAIN THIS TRUCK IS STRAIGHT OFF THE DEALERS LOT.  ONSTAR SENT EMAIL STATING 'ISSUE WITH ANTILOCK BRAKING SYSTEM, TAKE TO DEALERSHIP WITHIN 7 DAYS '.   SO BRAKE FAILURE IS A MAJOR ISSUE.  BUT ALSO A KNOWN BRAKE ISSUE AND THE COMPUTERS SAY STAY BELOW 62 MPH AND GET SERVICED WITHIN 7 DAYS ARE JUST AS WORRISOME.   A BRAKING ISSUE SHOULD INSTRUCT DON'T DRIVE AND HAVE TOWED   THANKS","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11309738,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/17/2020","dateComplaintFiled":"02/17/2020","vin":"3GTU9FET6LG","components":"ELECTRICAL SYSTEM,ENGINE","summary":"SMELL OF SMOKE STRONG IN THE CAB AND OUTSIDE HOOD OF TRUCK. ALSO HAVE SEEN SMOKE COMING FROM HOOD OF TRUCK. SMELLS LIKE BURNING ELECTRICAL OR PLASTIC","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11309169,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/13/2020","dateComplaintFiled":"02/14/2020","vin":"3GTU9DED3LG","components":"SERVICE BRAKES","summary":"VEHICLE WAS PARKED. ENTERED VEHICLE AND TURNED ON VEHICLE USING INTERIOR START BUTTON. VEHICLE WAS PUT IN REVERSE AND WAS BAKING WHEN ALL BREAK PRESSURE DISAPPEARED AND VEHICLE WAS ROLLING BACKWARD AND CAME TO A STOP BEFORE STRIKING ANOTHER VEHICLE AND CHILD. VEHICLE WAS PLACED IN PARK AND ESC FAILURE, TRAILER BRAKE FAILURE, TRACTION CONTROL FAILURE, POWER STEERING FAILURE AND DO NOT DRIVE ABOVE 62 MHP ALARMED ON THE DASH. VEHICLE WAS SHUT OFF AND ON 3 TIMES AND RESET FINALLY REGAINED SOME BREAK PRESSURE BUT CHECK ENGINE LIGHT CAME N. VEHICLE WAS TOWED TO TRENT GMC, NEW BERN  NC FOR SERVICE. SERVICE TOLD US IT HAD A RECALL. I WAS UNABLE TO LOCATE A RECALL FOR THIS ISSUE. THIS COULD HAVE ENDED VERY BAD. I AM NOT ASSURED THAT THE PROBLEM IS FIXED.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11308116,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/10/2020","dateComplaintFiled":"02/10/2020","vin":"3GTP9EEL0LG","components":"ELECTRICAL SYSTEM,EXTERIOR LIGHTING,UNKNOWN OR OTHER","summary":"BRAND NEW TRUCK. STUCK AT THE GYM IN THE MIDDLE OF THE NIGHT TRUCK WONT START. THE INTERIOR LIGHTS, HEAD LIGHTS, AND RADIO WONT SHUT OFF. VEHICLE WONT START. I'M ASSUMING THE BATTERY WAS DRAINED BECAUSE INTERIOR LIGHTS, EXTERIOR LIGHTS, RADIO, WONT SHUT OFF. HAS TO BE SOME KIND OF ELECTRICAL MALFUNCTION. WAITING ON GM ROADSIDE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11307331,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/13/2020","dateComplaintFiled":"02/05/2020","vin":"3GTP9EEL4LG","components":"POWER TRAIN","summary":"THE TRUCK RANDOMLY GETS STUCK IN PARK. CANNOT PUT IT INTO DRIVE, NEUTRAL OR REVERSE. THE CAR HAS BEEN AT THE DEALERSHIP SINCE JANUARY 27, 2020. GMC WONT SEND THEM THE PART, THE DEALSHIP BELIEVES IT MUST BE A PROBLEM WITH THE PART AND THEY ARE TRYING TO FIX OR REDESIGN THE PART BEFORE ITS SENT OUT. ALSO I WAS TOLD BY MY DEALERSHIP ANOTHER 2020 AT4 CAME IN WITH THE SAME PROBLEM. IT WAS TOWED TO THEM.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11301704,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/24/2020","dateComplaintFiled":"01/24/2020","vin":"","components":"SERVICE BRAKES","summary":"TL* THE CONTACT OWNS A 2020 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING AT 52 MPH, THE BRAKE PEDAL WAS DEPRESSED BUT WAS VERY FIRM. THE PARK BRAKE WAS ACTIVATED BUT FAILED TO EFFECTIVELY STOP THE VEHICLE. THE VEHICLE WAS COASTED TO A PARKING LOT AND WAS PUT IN PARK. THE BRAKE SYSTEM FAILURE LIGHT, THE ABS AND SEVERAL OTHER WARNING LIGHTS ILLUMINATED. THE VEHICLE WAS TOWED TO THE BAKER BUICK GMC OF CHARLESTON DEALER, LOCATED AT 1621 SAVANNAH HWY, CHARLESTON, SC 29407) WHERE THE VEHICLE WAS KEPT FOR A DIAGNOSTIC TEST. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THE FAILURE WAS A KNOWN ISSUE AND REFERRED THE CONTACT TO THE DEALER. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 7,020.  THE VIN WAS NOT AVAILABLE.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11300894,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"01/21/2020","dateComplaintFiled":"01/21/2020","vin":"1GTU9BED3LZ","components":"UNKNOWN OR OTHER","summary":"THE BACKUP CAMERA IS ENTIRELY TOO BRIGHT AT NIGHT.  IT IS NEARLY IMPOSSIBLE TO SEE THE MIRRORS DUE TO THE BRIGHTNESS","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]},{"odiNumber":11289110,"manufacturer":"General Motors, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"10/07/2019","dateComplaintFiled":"12/15/2019","vin":"1GT49WEY3LF","components":"EXTERIOR LIGHTING","summary":"WHEN MAKING RIGHT TURNS IN THE DARK THE HEADLIGHTS DO NOT CAST LIGHT TO THE RIGHT SO YOU CAN SEE WHERE YOU ARE TURNING. THIS IS ESPECIALLY A PROBLEM IN THE RURAL WITHOUT STREETLIGHTS IT IS TOTALLY BLACK FROM THE DRIVERS SEAT LOOKING OVER THE RIGHT SIDE OF THE HOOD OR OUT THE RIGHT WINDOW.","products":[{"type":"Vehicle","productYear":"2020","productMake":"GMC","productModel":"SIERRA 1500","manufacturer":"General Motors, LLC"}]}]}