GMC Sierra Complaints (2024)

545 consumer complaints on file.

#11744867June 17, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2024 GMC Sierra 1500. The contact stated while driving 70 MPH at night, the message “Press Engine Start Button” was displayed, and the vehicle lost power. The vehicle was coasted to an exit ramp. The contact stated that after coming to a complete stop, the vehicle started to operate as intended. The vehicle was serviced under NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); but the recall repair failed to fix the vehicle. The contact stated that the failure had occurred after the recall repair was performed. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 24,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11744152June 15, 2026
POWER TRAIN
Issue is with the transmission as it harshly shifts into a low gear when on an incline. This causes me to lock up my breaks as it feels like the truck was rear ended by another vehicle. I’m concerned that this is going to cause an accident. This problem has not been reproduced by the dealer. I’ve taken it to the dealership several times. No warning lamps or messages.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743965June 14, 2026
ENGINE, POWER TRAIN, FUEL/PROPULSION SYSTEM
My truck engine has failed due to metal shavings in the oil related to the L87 engine recall, and the failure occurred after GM had replaced the truck’s oil as part of the recall remedy. The recall remedy did not prevent the failure of the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743967June 14, 2026
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
My truck engine has failed due to metal shavings in the oil related to the L87 engine recall, and the failure occurred after GM had replaced the truck’s oil as part of the recall remedy. The recall remedy did not prevent the failure of the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11744033June 14, 2026
UNKNOWN OR OTHER
The tailgate opens unexpectedly, it can be inspected but it is in for repairs on 6/15/26. There was luggage in the back and it could have fallen out on the freeway. The problem has not been repeated by the dealer, but it has occurred several times in the past. The vehicle had not been inspected by others. There was no warning that the tailgate opened. They start to occur randomly several months ago.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743283June 10, 2026
ENGINE
On XXX, while traveling at 75 mph on a major interstate highway, this 2024 GMC Sierra Crew Cab suffered a sudden and catastrophic internal engine seizure, resulting in an immediate and total loss of propulsion. This defect put the safety of all occupants and surrounding motorists at extreme risk, forcing the driver to navigate a completely unpowered, rapidly decelerating vehicle through high-speed traffic to reach the shoulder without the aid of engine power. There were absolutely no warning lamps, error messages, or mechanical symptoms prior to the failure; the engine locked up instantaneously without any advance warning. Following the incident, the vehicle was flatbed-towed to an authorized franchise dealership (Dossett GMC in [XXX]), where it remains un-repaired and is currently available for inspection by the manufacturer or federal investigators upon request. Critically, this vehicle was previously presented to a certified General Motors dealership at 34,766 miles for inspection and service compliance under Federal Safety Recall N252494001 (which covers engine component failure and subsequent loss of propulsion). The vehicle was cleared as passing the manufacturer's inspection protocol at that time. The total engine failure and seizure occurred less than 9,000 miles later at approximately 43,634 miles. The catastrophic field failure of this vehicle demonstrates that the manufacturer's current safety recall inspection and remedy are insufficient to identify or mitigate the defect, presenting an ongoing and severe risk to public highway safety. 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
#11742868June 9, 2026
ENGINE, POWER TRAIN
I was driving down the highway when all of a sudden felt a hesitation and then seen message low oil pressure turn off vehicle and was just able to pull of the exit ramp of the highway when the truck had complete loss of power and then Died..called dealer right away and was flat bedded to the dealer..This just happened yesterday (06/08/26)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743080June 9, 2026
STRUCTURE:BODY
I was driving down the highway and the top grill trim 84957848 part number, flew off. Hit my windshield. Could’ve caused the small car behind me to blow a tire or damaged their vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11742651June 8, 2026
VISIBILITY/WIPER, STRUCTURE:BODY
top grill deflector flew off at highway speeds creating a safety hazard for me and others in the highway. 2022 GMC Sierra with the same part and grill was previously recalled for this identical issue. 2022-2026 models have the same problem and should be included in the recall. Please see Safety Recall N242490120
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11742824June 8, 2026
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: WARNINGS
Unexpected braking at highway speeds. This has at least 50 times at highway speeds. The truck has experienced repeated false Forward Collision Alerts and un-commanded Automatic Emergency Braking events. Adaptive Cruise Control frequently detects roadside objects and vehicles in adjacent lanes, particularly on curves. The vehicle has never had windshield replacement, front-end damage, suspension modifications, or aftermarket accessories. This is creating a safety hazard because the truck brakes unexpectedly in traffic at any speed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11742581June 7, 2026
POWER TRAIN
I was merging onto the highway in my 2024 GMC Sierra 2500HD AT4X equipped with the 6.6L Duramax engine at about 50mph when the gauge cluster emitted a “Reduced Acceleration Drive With Care” message followed by a check engine light. The check engine light presented indicated a “P0747” and “P0700” code. The vehicle was then stuck in 5th gear at highway speeds. Luckily there was no traffic present during this event due to the reduced acceleration of the vehicle and confusion caused to the operator. This could have been a dangerous situation due to the sudden change in handling of the vehicle. I have since then had the vehicle towed to the dealership in which it was purchased from for them to do their investigation to see how to fix the issue. This is a very well known issue with these GM heavy duty pickups. There is currently a recall on these trucks for this exact issue but my truck at this point in time is not included in said recall. I believe the recall is for 2020-2022 vehicles. Mine happens to be a 2024 which uses the same transmission as the older model vehicles in the recall. There are many other owners of these trucks like myself who have experienced this exact same issue. I’m sure this isn’t the first time this issue has been reported either. Something must be done about this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11741809June 3, 2026
UNKNOWN OR OTHER
The screen shakes. Goes black. Zooms in randomly without prompting. Started dialing up people from recent calls. While trying to get the navigation working. I started drifting into oncoming traffic. Fortunately was able to course correct and avoid collision. Buttons are most time not responsive to touch. It is distracting. The system has never fully worked as promised and is a distraction. And as a result a serious safety hazard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11741595June 2, 2026
SERVICE BRAKES
After the latest update from the Dealer, the integrated trailer brake module no longer shows an output of how much power it's applying to the trailer brake system. It just stays blank. I can tell that the brakes actually are being applied, however not having indication of them being applied and how much pressure is applied is concerning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11741236June 1, 2026
ENGINE
Engine seized at 23,291 miles, approximately 3,661 miles after GM's authorized dealer performed a PicoScope inspection under Recall N252494000 and certified the engine as passing. July 2025 recall attempt was documented as incomplete with no remedy available. November 2025 inspection passed the engine. Engine seized March 2026. New engine installed under Special Coverage N252494003. New drivability concern — hesitation and lurch at low speeds — appeared immediately after the repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11741282June 1, 2026
POWER TRAIN, FUEL/PROPULSION SYSTEM, ENGINE
The vehicle received the official N252494001 recall oil remedy on 06/27/2025 at 15,438 miles (but suffered catastrophic engine failure and loss of propulsion at 33,661 miles on 05/30/2026).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11740659May 28, 2026
ENGINE, ELECTRICAL SYSTEM
My truck has completely shut down/ loss power on several occasions. Happened when I was l slowing down or completely stopped. Everything goes dark. Had to wait several minutes before truck would start.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739360May 21, 2026
ENGINE
Engine failure after passing PICO test. Engine completely locked up on a busy highway without the ability to even put it in neutral. Yes, confirmed by dealer that there were metal shavings in the fluid. Inspected by authorized dealer. No lights came on in the vehicle prior to the engine failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739083May 20, 2026
ELECTRICAL SYSTEM, POWER TRAIN
Check engine light illuminated with service transmission. The next day transmission started slipping and finally would not engage in reverse. Dealership Has it now and after diagnosis they advised that they had replaced the electronic control module to which, on the test drive, the gauge cluster blacked out and they got more codes. The cpdes that the vehical threw were the transmission valve body needed to be replaced.The truck has 24k miles on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11738874May 19, 2026
ENGINE
Engine failure at 12,000 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11738513May 18, 2026
FUEL/PROPULSION SYSTEM
Transmission valve body failure contestant with Recall # N242454440. Dealer diagnosed valve body failure and corrective action of Valve body rebuild. I would like 2024 models to be included with this recall for proper repair per Special Coverage # N242454441.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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