GMC Sierra Complaints

15,732 consumer complaints on file.

#11678969August 7, 2025
ENGINE
Radiator cracked along outer edges. Similar to previous TSB’s as released by GM, but my vehicle doesn’t fall under the years covered by that TSB
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678987August 7, 2025
ENGINE, FUEL/PROPULSION SYSTEM
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 “keep and eye on it, and get a AAA membership”. 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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11679014August 7, 2025
ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER
Odometer Fraud. The contact considered purchasing a 2007 GMC Sierra 2500 from a local dealer. The contact stated that vehicle mileage was listed as 159,000, but the Carfax report listed the mileage as 400,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11679172August 7, 2025
ENGINE
I received a recall notice in May 2025 for L87 Engine. To date, remedy not available. Per the safety recall letter provided, I'm notifying you that the dealer has failed "within a reasonable amount of time" to remedy this situation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11679174August 7, 2025
ENGINE
The vehicle’s shift control module in the transmission is malfunctioning. The vehicle is shifting hard and having trouble finding the gears. The safety issue is that this is a known GMC transmission malfunction with the risk that the rear wheels can lock up when downshifting in the higher gears. Sudden rear wheels lock up proses a risk to cause an accident on the roadway potentially harming the driver and passengers in the defective vehicle as well as risking other drivers on the road. No warnings were given before the malfunction. The vehicle has been regularly serviced on time and taken care of. The malfunction began and within one week the vehicle progressed to shifting so hard I didn’t feel comfortable driving it especially with my child in tow.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678766August 6, 2025
POWER TRAIN:AUTOMATIC TRANSMISSION
The contact owns a 2024 GMC Sierra 1500. The contact stated that while attempting to reverse out of a parking space, the transmission failed to respond while in reverse. Additionally, the vehicle operated in LIMP Mode. The vehicle was driven in LIMP Mode to the nearest dealer, who diagnosed the vehicle and determined that the transmission valve body was faulty and needed to be replaced. The transmission valve body was replaced. The vehicle was towed back to the residence from out of state. The manufacturer was notified of the failure. The failure mileage was 6,400.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678785August 6, 2025
VISIBILITY
The contact owns a 2015 GMC Sierra 1500. The contact stated that while the vehicle was parked, the contact’s son closed the front passenger’s side door, and rear window glass exploded. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 163,353.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678809August 6, 2025
ELECTRICAL SYSTEM, ENGINE, STEERING
2018 GMC Sierra SLT's electric power steering suddenly stopped working, I almost got killed this issue has been reported by other owners
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678824August 6, 2025
ELECTRICAL SYSTEM
The contact owns a 2019 GMC Sierra 1500. The contact stated while driving approximately 45 MPH, the message "Battery Saver Alert" was displayed on the instrument cluster. The contact stated that the battery gauge was reading 9V on the 12V battery. The vehicle was driven to a dealer. The dealer diagnosed the vehicle and determined that a battery tender was needed. The contact asked the dealer to check the 12-Volt battery which was replaced 2 years prior by the same dealer. The dealer diagnosed the vehicle and determined that the alternator needed to be replaced. The contact was later informed that the battery fuse also needed to be replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 19V888000 (Electrical System); however, the VIN was not included in the recall. The failure mileage was 43,742.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678853August 6, 2025
ENGINE, POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle would intermittently hesitate upon depression of the accelerator pedal. The contact also stated that the check engine warning light had flashed on the instrument panel. The contact took the vehicle to an independent mechanic, where the mechanic informed the contact that there was a miscommunication between the engine and the transmission. Two dealers were notified of the failure, and each informed the contact that there were no recalls on the vehicle. The contact was also given a diagnostic fee to determine the cause of the failure; however, the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678916August 6, 2025
POWER TRAIN
Component/System that failed: The issue appears to originate from the transmission or drivetrain, specifically resulting in the rear wheels locking up and dragging at low speeds. It feels like something is seizing inside the drivetrain, making the truck very difficult to move. The vehicle is available for inspection upon request. How safety was put at risk: This failure presents a serious and unpredictable safety hazard. The vehicle begins locking up randomly when slowing down, such as in parking lots or residential areas. If this occurred at higher speeds or in traffic, it could easily result in a crash, loss of control, or pedestrian injury. It’s completely unreliable and unsafe to operate in this condition. Has the problem been reproduced or confirmed by a dealer or service center? The issue is part of a well-known transmission defect affecting GM’s 8-speed automatic transmissions. There are multiple class action lawsuits and thousands of consumer complaints documenting identical symptoms. GM is fully aware of the defect but has refused to issue a recall, instead allowing the time-based warranty to expire even when the mileage is still well within the 60,000-mile limit. My local GMC dealer refused to offer a loaner or goodwill repair and quoted over a week just to diagnose it despite knowing that this is a known failure point. The symptoms are consistent with the known defect GM continues to avoid addressing. Has it been inspected by the manufacturer, police, or insurance? No outside inspection has occurred yet. Given the widespread documentation of this defect and the consistency of symptoms, it should not be necessary to involve other parties. Were there any warning lamps or messages? No. There were no warning lights, messages, or alerts of any kind. The failure occurs randomly, and without any prior indication. That unpredictability makes the issue even more dangerous.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678658August 6, 2025
ELECTRICAL SYSTEM, VISIBILITY/WIPER, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
The backup camera visibility at night is poor, making it very difficult to see behind the vehicle. This poses a potential safety hazard for pedestrians who may be in the path while reversing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678666August 6, 2025
STRUCTURE
The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving 60 MPH on the highway, the front grill detached. No warning light was illuminated prior to or during the failure. The local dealer was contacted and placed a special order for the part; however, the contact had not received an update from the dealer after several months, and the vehicle remained unrepaired. The manufacturer had not been contacted regarding the failure. The current mileage was approximately 90,000. The failure mileage was approximately 20,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678734August 6, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2025 GMC Sierra 1500. The contact stated that while at a stop light waiting to make a left turn, the vehicle stalled. The vehicle failed to restart. No warning lights were illuminated prior to the failure. The contact stated that the failure was related to NHTSA Campaign Number 25V274000 (Engine and Engine Cooling). The vehicle was towed to the local dealer to be diagnosed, and the contact was informed that the engine had seized. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 21,100.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678408August 5, 2025
ENGINE
This recall has been coming for some time now its out and GM still has no plan or action. This is our only auto and my understanding if this issue happens it could cause loss of life. I am concerned for my wife driving to work every day and what happens if we want to take a trip. We need resolution on this. Apr 24,2025 Manufacturer Recall NumberN252494000 NHTSA Recall Number25V274 Recall StatusRecall Incomplete, remedy not yet available [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678475August 5, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light was illuminated, and the vehicle suddenly stalled. The vehicle was able to restart, but the check engine warning light remained illuminated. The vehicle was taken to the local dealer, where it was diagnosed with an engine oil consumption failure. The vehicle was not repaired. The contact was informed that the failure was related to NHTSA Campaign Number: 25V274000( Engine and Engine Cooling). The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 87,500.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678503August 5, 2025
SEAT BELTS, ELECTRICAL SYSTEM, LANE DEPARTURE: ASSIST
2021 GMC Sierra 1500 [XXX] miles 36,500. My childs seatbelt does not work and the lane keep assist does not work INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678524August 5, 2025
AIR BAGS
Local dealer is not repairing my recall. I keep getting told parts are not available and this has gone on for years.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678559August 5, 2025
POWER TRAIN, FUEL/PROPULSION SYSTEM, ENGINE
My daughter and I drove to town to run some errands, we live twenty-three minutes away and take the freeway. Speed limit on that specific section of the freeway (I80) is 80mph. As I was taking the on-ramp to enter traffic, My GMC started shifted very hard and losing power. The vehicle was sputtering and making strange sounds. I was unable to exceed 60mph due to excessive vibrations/shaking the vehicle. Steering was starting to be difficult at the same time I noticed Oil Pressure Gauge slowly dropping on instrument panel below 25psi. I had to pull over immediately. oil pressure remained lower than normal, verified Oil was filled to manufactures specifications (changed June 30, 2025). Returned the vehicle to my place of residence as safe and slow as I possibly could and parked it as it is a major safety concern.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678572August 5, 2025
ENGINE
While traveling on the freeway at freeway speeds and with the cruise control on, on 7/22/2025, my vehicle abruptly start making an odd noise, the steering wheel started to vibrate / move as if I had a flat tire. I safely existed the freeway and pulled over to investigate, there was no flat tire yet the vehicle still made the noise and experienced issues when the throttle was applied. I proceeded to call a tow truck, and have the vehicle towed from Alpine, CA to Temecula and Temecula Valley GMC. While there the dealership gave me an initial diagnosis of "Miss fire in cylinder 8". We left the vehicle, and awaited more information. The next day I received a phone call stating that they needed to do an engine teardown to completely diagnose the issue, to the tune of approx. $1,500. In the dealers words, they needed to do the teardown to determine if "They could salvage the engine, or if it had to be condemned". The following day I received another call stating that the engine needed to be completely replaced due to a collapsed cylinder. The estimate for this work is over $13,000. the truck is 6 years old with 58,XXX miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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