GMC Sierra Complaints

15,732 consumer complaints on file.

#11704016December 9, 2025
ENGINE
The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the engine seized. The contact was unaware of a warning light being illuminated. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to the dealer, where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact referenced an unknown engine recall; however, the VIN was not under recall. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to report the failure to the NHTSA Hotline. In addition, the contact was informed that the VIN for the vehicle was a Canadian VIN, and the mileage was displayed in kilometers. The failure mileage was approximately 120,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703646December 8, 2025
ELECTRICAL SYSTEM
Every winter when the temps dip into single digits something on the truck freezes and causes a major malfunction. This winter (2025) is the second time I’ve had a problem with the truck freezing up and leaving me in “limp mode”. Last year the same thing happened. The def sensors freeze up and the heater shorts out leaving me stranded in my $70,000 truck. I now have 34miles remaining until my truck is limited to 55mph. This is a serious problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703690December 8, 2025
STRUCTURE:BODY
I was driving down the highway at 65-70mph and the top part of the grill flew off, causing scratches to the wind shield. There’s has been a recall on this for 2022 GMC 1500 Sierra’s but I am driving a 2024 and the issue is still the same.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703703December 8, 2025
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703710December 8, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Sierra 1500. The contact had received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The vehicle was taken to the dealer where an inspection was performed on the engine. The contact was informed that the vehicle had passed the inspection, and the mechanic added a higher viscosity oil, installed an oil fill cap, replaced the oil filter, and updated the Owner's Manual. The contact stated that the remedy failed to address or repair the possible defect with the engine. The contact stated that the remedy resulted in a higher cost for oil changes, and fuel economy had decreased from 21 miles per gallon to 18 miles per gallon. The manufacturer was made aware of the issue and the contact was provided a case number. The contact stated that the vehicle had not been repaired. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703711December 8, 2025
POWER TRAIN
Pulling into a driveway and the truck made a loud clunk and the check engine light, traction control light, and a reduced engine power light came on and the truck came to an abrupt stop. When the gear shift was put into reverse or any forward gear the truck would rev up without touching the gas pedal. The left rear wheel locked up. After paying over $700 in tow bills to get the truck towed to our house and then to the dealer we were told that the transmission had a catastrophic internal failure. This truck only has 82,000 miles on it and is a 2021!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703714December 8, 2025
UNKNOWN OR OTHER
The OnStar System completely shut down. The module stopped working while driving and now there is no communication to the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703733December 8, 2025
LANE DEPARTURE: WARNING
Vehicle experiences a failure to the Lane Departure Warning and Intellibeam headlamps functions, primarily at night. Trouble first began on 3/12/2023 and has been to two GM dealerships for 11 repairs and the problem is still unresolved. GM Executive Escalations have been opened and the problem is still unresolved. Their response is that 18 vehicles experienced this problem and the resolution was to clean the front windshield and update the camera software. This truck has had the camera replaced and software updated three times by two different dealerships. GM is now stating they are unwilling to resolve the problem any further and they would no longer send any Field Engineers to investigate the problem. I have numerous photos, videos and repair logs from with the problem and resolutions performed. Nature of problem: At night, the indicator button for selecting the Lane Departure Warning will go out. If the button is depressed, a message in the DIC indicates Lane Departure Warning Unavailable and there is no way to activate the LDW. It also causes the Intellibeam headlamps to not work. Any help you can provide is greatly appreciated.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703746December 8, 2025
POWER TRAIN, FORWARD COLLISION AVOIDANCE
The contact owns a 2025 GMC Sierra 1500. The contact stated that while driving 75 MPH with the cruise control activated, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the vehicle decelerated to 10 MPH. In addition, the vehicle came to an abrupt stop independently. The contact’s upper body almost struck the front windshield. There was no warning light illuminated. The contact stated that shortly afterwards, the vehicle resumed driving normally at 75 MPH; however, the failure reoccurred after a short distance. The vehicle failed to accelerate as intended while depressing the accelerator pedal and abruptly came to a stop. The vehicle then resumed driving normally. No warning lights were illuminated. The contact arrived at the residence, and the vehicle was towed to the dealer. The vehicle remained at the dealer awaiting a diagnostic test. The manufacturer was not made aware of the failure. The approximate failure mileage was 7,800.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703773December 8, 2025
SERVICE BRAKES
Car rolls after parking brake is set. This happens on low hill grade and high hill grade parking location.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703774December 8, 2025
ENGINE, ELECTRICAL SYSTEM
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. The failure mileage was approximately 32,000.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11703847December 8, 2025
ENGINE
The GMC Sierra 1500 started a knocking sound. The collapsed lifter on a AFM cylinder bent a push rod which led to cam failure. Metal fragments are throughout the oil system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703853December 8, 2025
POWER TRAIN
Upon exiting the freeway, I pressed the gas and the vehicles rpm’s went up to 4K plus on a diesel engine, no acceleration. Thought maybe there was ice and had lost traction, tried again, same thing. Then a shudder, bang and pop. The check engine light went on and informed me of limited power and acceleration. There was no acceleration. Rpm’s would go to 2000 plus just to move. Got it to the dealership and parked it. Made a service appointment. They tried to put it into reverse and it wouldn’t move.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703499December 7, 2025
ENGINE
While traveling on highway, engine suddenly just stopped. Unable to restart engine and had to coast to side of road with high speed vehicles almost hitting us several times. Towed to dealership and told metal found in oil filter. Told engine had to be replaced. Vehicle was inspected 3 weeks before by dealership and told everything was fine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703500December 7, 2025
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703546December 7, 2025
ENGINE
Catastrophic engine failure after taking it in for the April 2025 recall. Complete engine replacement needed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703585December 7, 2025
BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING, VISIBILITY/WIPER, EXTERIOR LIGHTING
The backup camera in the dark on this vehicle is unusable. Someone will eventually run someone over. I have added brighter lights everywhere on the back of the vehicle and the camera is still useless at night. The dealer told me it looked fine to them (they checked it in a lit garage). There are hundreds of complaints across all forums.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703473December 6, 2025
UNKNOWN OR OTHER
Experience water leaking 3rd brake light and rear window. Leaking in both areas. Also concerned about mold that could be caused by this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703418December 6, 2025
STEERING
Loses power steering when vehicle is low speed or stopped. Same details as safety recall 14743 for 2015 gmc sierra.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703214December 5, 2025
ELECTRICAL SYSTEM
experience a automatic OTA update to the info system on my 2021 GMC Sierra(I did not iniciate) which burnt out the radio module which controls the info system. I am being charged $1,300+ for repair due to vehicle being out of warranty(52,000 miles) and no recall on this vehicle model for this issue. GMC does have a recall for this exact issue on the 2021 GMC Tahoe models, but not the GMC Sierra. If the GMC utilizes the same componets for both models of vehicle how doe the recall#N202319250 not cover the exact same issue on both models?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Sierra