GMC Sierra Complaints

15,732 consumer complaints on file.

#11725006March 17, 2026
ENGINE
at roughly 5,000 miles had lifter failure which caused loss of power. That was repaired under warranty. Same issue at 86,000 miles - loss of power. New engine which I had to pay for. Same issue at 126,000 miles. New engine required. Covered under warranty. Side note. New engine will only have balance of warranty from 2nd engine or about 5,000-6,000 miles. first incident Feb 2001, second incident about Nov 2004, third incident Mar 2026.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725053March 17, 2026
UNKNOWN OR OTHER
After starting the vehicle, I turned on the rear defrost button and within a few minutes the rear window started producing smoke inside the vehicle. I turned the truck off immediately and then approximately 30 seconds later, the rear window on the passenger side shattered. There is a recall that was issued for this exact problem but when i contacted the dealership, I was informed that the recall applied to Canadian vehicle models only and that there was no recall issued in the U.S. for this problem. I believe that there was a great risk for my family's safety as my child sits directly in front of this window and presented an injury risk to her, as well as the overall fire risk that could have occurred if I had not noticed the issue immediately. There were no warnings before the incident occurred. I had to pay out of pocket to have the window replaced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725075March 17, 2026
ENGINE, FUEL/PROPULSION SYSTEM
While driving on the road the vehicle started sputtering and stalled! We pulled to the side of the road and tried to start the car but it rolled and would not start. We called a a mechanic who had it towed and found out that the fuel pump and the fuel control board had failed. Both have been replaced and the truck seems to be working again. Heard several other persons had this issue with their GCM Sierra Elevation so we wanted to report since there is currently no recall. Luckily the traffic was not going that fast or we could have had an accident and been seriously injured.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725091March 17, 2026
ELECTRICAL SYSTEM, VISIBILITY/WIPER, UNKNOWN OR OTHER
The rear window on my 2017 GMC Sierra shattered unexpectedly without any impact. The vehicle had been remote started in very cold weather and the rear window glass suddenly shattered while the truck was parked. There was no rock strike or external damage that would explain the failure. I later learned about GM Customer Satisfaction Program N192265660 regarding rear window defroster thermal events affecting certain 2014–2019 GMC Sierra and Chevrolet Silverado trucks. Based on the sudden failure and the conditions at the time, this appears consistent with that issue. The Auto Rear Defog feature in the vehicle settings was turned off, however the truck had been started using the remote start feature when the glass shattered. Photos of the shattered window are available. I am submitting this report because the rear window defroster system may cause the glass to overheat and shatter unexpectedly.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725101March 17, 2026
ENGINE
dangerous lost of propulsion in traffic while my minor daughter was in the vehicle, I was driving my truck that has a 6.2 Engine gmc that is currently being reviewed Engineering Analysis EA25-007, I bought engine back in October 2025 and incident happen Early March 2026 Around 10,000 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725116March 17, 2026
ENGINE
This truck is equipped with the 6.2L L87 and the motor seized up and shut off with no dash light warning and i stalled and rolled over a curb! This is very dangerous and now i have to pay 10k + out of Pocket for an engine replacement! Truck has low miles this is unacceptable and it needs to be in the recall , this is dangerous and it hurts people !
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11724825March 17, 2026
ENGINE
Engine failure on March 8, 2026. 2024 Sierra Denali 1500 VIN [XXX] Prior to this incident, the vehicle was taken to the same dealer due to the safety recall. The engine was inspected on November 12, 2025, and I was told that it "passed," with the remedy being a change in oil viscosity. I was driving on March 8, 2026, when I heard some odd noises (clanking and knocking). Shortly thereafter, the engine just stopped in the middle of the road. It would not restart, and as a result, I couldn't put it in neutral to roll it out of the roadway. It remained stuck in park. I was stuck for 2+ hours in the rain, waiting for a flatbed wrecker. Cars were unable to pass in either direction. When the tow truck arrived, I was told it had to be dragged on to the flatbed with sleds due to the transmission being stuck in park. The truck was taken to Carl Black GMC in Roswell, GA. On Monday they confirmed that the engine had seized and needed to be replaced. The repair was completed, and I picked up the vehicle on Friday, March 13. 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
#11724873March 17, 2026
POWER TRAIN, ENGINE, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
My 2023 GMC Sierra has 60,571 miles for a while now while driving the transmission slips and slams into gears. Recently driving with my kids in the car on highway going 70mph the back brakes locked up multiple times, so scary and dangerous while driving. I now currently have a code P-0747 in the system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724912March 17, 2026
ENGINE
The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at approximately 45 mph, he observed a popping noise beneath him. The contact stopped the vehicle and observed smoke emanating from the front of the vehicle. The vehicle went into limp mode, lost power, and when the brake was depressed, the vehicle did not slow the vehicle down as intended. The contact stated that as he pulled into a parking lot to inspect the vehicle, he observed flames emanating from the hood. The contact stated that he pressed the hood latch, which did not open the hood, and he then exited the vehicle and observed the hood engulfed in flames. The contact mentioned that a store employee brought a fire extinguisher out and attempted to extinguish the flames. The fire department was called and extinguished the fire fully. There was no police report, but the police did come out to assist. The contact sustained a right-hand injury, but medical attention was not needed. The vehicle was then towed to the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 124,000.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11724945March 17, 2026
UNKNOWN OR OTHER
Premature frame rot
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724530March 16, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
The vehicle went into low power mode and said to pull over. As soon as that message appeared the next warning appeared and said to shift to neutral and pull over immediately and attempt to restart. The vehicle immediately shut off after second warning before having time to pull over from first message. I was able to pull most of the way off the road as the vehicle had shut off there was no power steering and had limited ability to steer the vehicle. This all happened without advance warning or any other warning that there was an issue while traveling at over 75mph. Vehicle would not restart and needed to be towed. Dealer stated it was a fule control module that was hard to get due to a recall. But that my vehicle was not part of that recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724534March 16, 2026
ENGINE
The engine decided to make some noise and all I heard was Ching Ching Ching, and it just died and I was unable to start it again
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724546March 16, 2026
ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724575March 16, 2026
ENGINE
Vehicle has 28,000 miles and auto shop states that the engine is blow, it's knocking and vibrating throughout the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724595March 16, 2026
UNKNOWN OR OTHER
Was driving down interstate and the top of my grill came off and smacked my windshield. Also, my tailgate opens on its own but the grill is the main safety issue. I have seen where they already have recalls on 2022s and earlier due to chrome grill coming off but mine is a 2023 and gm is refusing to honor it when it is obviously the same issue. Was very scary and could have caused a wreck as grill ended up on interstate being thrown around by vehicles. GM stated I would need recall added to my VIN in order for them to pay for it. Thank you!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724596March 16, 2026
FUEL SYSTEM, DIESEL
The contact owns a 2008 GMC Sierra 1500. The contact stated that while the vehicle was parked in the garage, diesel fuel started leaking onto the garage floor. The contact recently purchased the vehicle, inspected the source of the leak, and discovered that the fuel lines were completely rusted. Additionally, the contact stated that after refueling the vehicle, the fuel level lowered to half a tank the following day, creating a hazard. The vehicle was towed to a dealer but had not yet been diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 163,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724712March 16, 2026
ENGINE
Loss of power, and knocking from the engine while driving. Check brake system, check srs, check parking brake and check engine light flashing came on at the same time. The problem has been reproduced at a mechanics shop and has been determined that cylinder 6 is dead.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724775March 16, 2026
ENGINE, UNKNOWN OR OTHER
I was driving in a city at 30 miles per hour no acceleration and no load. I lost oil pressure, dumped all the oil out of the crankcase and then the engine locked up. I had it towed to my mechanic shop that i have work done. The technician diagnosed it as a failed oil cooler pressure supply line. Where the solid steel line crimps to a rubber oil hose, that connection had not been applied enough pressure and the rubber line became separated from the steel line.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724413March 15, 2026
ELECTRICAL SYSTEM
Electrical system…battery is completely dead after short in tailgate button. Yesterday afternoon I washed out the bed and tailgate. This is important to know as a result of my research. Several hours later I go out to the truck and the tailgate is open unexpectedly, thought I had left it opened. After going to dinner and shopping with family I tried to open tailgate with tailgate button and it would not work. After several attempts I then used my FOB button, worked. The next morning I go out and the tailgate is opened not by me, I closed it. Got to my destination put truck in park and tailgate opened by itself. I closed it. Went inside grabbed what I needed 15 min later go back to truck and tailgate is open..I close it. I go to start truck and battery is dead. Confirmed by battery plus in Medford oregon. Did some research and see that a recall has been issued for this same reason: N232426400 Tailgate May Open Unexpectedly. Yes the recall does not cover my vim however I believe this needs to be as a result of the cause and effect you have already confirmed. Today is Sunday. I will contact local gmc dealer though I wanted to start a formal process.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724457March 15, 2026
ENGINE
Engine failure at 84000
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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