GMC Complaints

LED Headlamps blink off and back on in a fraction of a second. Occurs when vehicle is moving or parked. Can be replicated in daylight by manually turning headlights on in the control center. GM documented with Document ID 6691954 "#PIT6203: Headlamp or DRL Flicker or Flash (July 16, 2024) Possible hazards include oncoming drivers being flashed from flicker. Oncoming drivers thinking they're being signaled by the flicker. Pedestrians or cyclists thinking the flash or flicker is signaling them to proceed and that vehicle operator will yield. Possible that headlamps will stay off when they flicker, rendering the driver unable to see during night driving. Since the PIT6203 was created (with the recommended action of replacing headlamp assemblies), GMC is now advising to NOT replace them, but offers no further solution. I've received no official word from GMC or the dealership on that, but while they explore a solution, I'm driving a brand new vehicle with a potentially dangerous manufacturing / build flaw. Please consider escalating this issue to a formal recall due to dangers outlined above.

Hello. As I come to a complete stop the car will go into auto-stop. After releasing the brake pedal the car will jerk forward . As I press the gas pedal the car Jerks and shakes . The rpm jumps way up and the mph say low.. there's been times I try to accelerate and the car with jerk and put itself into park.. in the middle of traffic.. heart pounding to say the lease. I also notice theres alot of black liquid dripping for the front right side under the front bumper. There were no problems with the car or lamp indicating there were before this. I went to where I brought the car and they told me my warranty expired and that I will need to pay $265 just to diagnose the issue. I didnt have that money. I do have a car code reader and I did my best to find a solution. Codes P0700, P171D, And P187D all appear on my device. I then looked up recalls and my VIN wasn't confirmed.. but I am certain it is the same issue . You do have a open recall for this very particular issue for my particular model . I love my car and GMC. Please remedy this situation and have me driving safely and free minded again and soon ! Please reach back with any feedback as soon as possible. Thanks !

While driving, I turned the volume on the radio a couple clicks louder using the steering wheel controls. After I stopped pushing the volume button on the steering wheel, it continued to rapidly increase volume until it maxed out. It was incredibly loud, in a panic, I verified the VOL+ button was not stuck. The VOL- on the steering wheel did not reduce the volume. I spun the volume button down, on the radio, but it would instantly return to full volume the moment I stopped spinning it. The power button on the radio also had no effect. I was driving at 50mph and had no way to reduce the volume from the max, which was incredibly distracting to say the least. I was finally able to get it to stop by pulling out my phone (which was connected via CarPlay) and hitting the pause button on my phone. Afterwards it behaved as normal, but my man did my ears hurt. Luckily there wasn’t any traffic nearby as I could hardly focus on the road while fumbling with the audio.

My headlights flicker or blink without warning and I feel that they could fail while on the highway. I purchased my truck on the 1st of August 2024. Gm had issued a service letter for the problem on the 30th of July 2024 but they still sold me truck without mentioning the defect.

I want to relate an incident that thankfully did not result in a serious mishap or injury. It Occurred on Canada’s most busy highway. On Saturday [XXX] We were just coming off [XXX] and traffic started to backup. It was heavy. It is then that I lost all control of the Vehicle’s speed. The transmission gave way and left us unable to accelerate as the traffic began to speed up dramatically. I quickly hit the flashers and coasted to the shoulder avoiding the speeding traffic. I managed to get a bit of forward movement to stay out of the way. The transmission would not work at higher speeds. It was nerve racking and we felt unsafe in our predicament. To avoid towing charges, we slowly and carefully took an exit to get on a less travelled road and shut off the vehicle to let it cool. After restarting it we were able to slowly limp to a GM dealership on Fairview in Burlington Ontario Canada. They could not help us as their Transmission mechanic was off for two weeks. My daughter eventually came and picked us up. I left the vehicle at the GM dealer to pick up later after attending our function in Toronto. Later in the evening we returned and were able to return to our Canadian residence in Niagara Falls Ontario Canada by driving well under the speed limit on the [XXX] highway. We then took the vehicle, again at low speed we took the vehicle to Falls Chevrolet, Cadillac, Buick, GMC where their transmission mechanic was out for training. We left the vehicle with them for a week. They advised me that the transmission was basically unrepairable and too costly to rebuild, so we went with a complete replacement. They were very helpful. It was expensive. This happened at 119,000 miles. The Yukon gave no indication of a failure till it happened. We have driven long distances with this vehicle. I understand this is not uncommon with this make and model. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On the evening of 5/6/24, my husband was driving home in our 2021 GMC Sierra 1500 when the truck started to run hard, shaking, and the check engine light came on and was blinking. He pulled onto the side of the road immediately and more messages were coming across the dashboard. The truck was towed to a dealership that same night. Once the dealership assessed what was wrong, we were advised by the dealership who confirmed the lifters failed. The truck is currently still sitting at the dealership as we're waiting for the parts because we've been told multiple times that the parts are on backorder. I understand the truck is available for inspection as its been sitting on the lot since 5/6/24. This is the first time this has happened to the truck, zero prior issues. The truck has great service records and has always been properly maintained. We are currently still under the manufacturer warranty. To date, the dealership is still in possession of the truck for 90 days, and we still do not have any ETA on when the parts will arrive/truck will be fixed.

Both headlights blink randomly. Causes unsafe driving conditions at night as well as possibility for road rage interaction at any time.

The contact owns a 2014 GMC Sierra 1500. The contact stated while driving 5 MPH, the steering wheel became difficult to turn. There was no warning light illuminated. The vehicle was able to restart; however, the failure recurred. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

The contact owned a 2022 GMC Sierra. The contact stated that while driving at 45 MPH, the vehicle went into safe engine mode and stopped. The vehicle attempted to restart without application multiple times. There was an abnormal grinding sound detected. The contact pushed the start/stop button, and thirty seconds later, the contact noticed white smoke from the engine, and the vehicle caught fire.  There were no warning lights illuminated. The occupants were able to exit the vehicle. There were no reported injuries, crashes or police reports filed. the air bags deployed due to the fire. The fire department extinguished the fire. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The vehicle was towed to a tow lot. The insurance agent conducted an independent investigation and found that the wire harness in the engine was hot and severed the fuel line. There was fuel in the engine. The insurance company deemed the vehicle a total loss. The manufacturer was contacted, who took possession of the vehicle from the insurance company. The failure mileage was approximately 30,000.

The contact owns a 2021 GMC Yukon. The contact stated while driving at various speeds, the message “Safety Restraint Unavailable” was displayed. The vehicle was taken to a dealer where it was diagnosed that the battery voltage was low. The battery was replaced; however, the failure reoccurred. The vehicle was taken to the dealer on two other occasions, where the system was reset, but the failure reoccurred approximately two months later. The manufacturer was notified of the failure. The failure mileage was approximately 16,000.