GMC Sierra Complaints

15,732 consumer complaints on file.

#11611592August 29, 2024
STRUCTURE:BODY
Entire frame is rotted through. Vehicle has only 55,539 miles on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11611647August 29, 2024
FUEL SYSTEM, DIESEL
The contact owns a 2024 GMC Sierra 2500. The contact stated that while driving at various speeds, the two outside cabs were smoking. There was smoke detected near the fuel tank. The contact stated that there was an abnormal odor of diesel and DEF detected. There were no warning lights illuminated. The vehicle was taken to the local dealer, but the vehicle was not diagnosed or repaired. While driving, there was a lot of smoke detected from the vehicle. The vehicle was taken back to the local dealer, who was unable to determine the cause of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 100.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11611397August 28, 2024
ELECTRICAL SYSTEM
This has now happened twice. While driving down the road, my radio has went to full volume and continues to go back to full volume, even if I twist the volume control knob quickly to lower the volume. This is a very scary situation while driving down the road and your radio goes to 100% volume out of the blue. There is no warning and the volume just goes to 100%
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11611446August 28, 2024
POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated while driving 40 MPH, the vehicle was vibrating and shaking abnormally. The contact pulled over to the side of the roadway and turned off and restarted the vehicle and the shaking ceased. The contact stated that the failure became a persistent failure. The vehicle was taken to a dealer and independent mechanic to be diagnosed. The contact was informed that the vehicle had experienced transmission failure however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 84,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11611486August 28, 2024
ELECTRICAL SYSTEM, SERVICE BRAKES, VEHICLE SPEED CONTROL
My brakes failed 2 times. One time I almost got into a horrible wreck with my daughter in the truck. "Brake system failure" " max speed 43mph" I have not had any brake work or anything done. The dealer is trying to charge me to replace the whole brake system when [XXX] this says to reprogram. Still waiting on gmc to tell me if it's covered under warranty. From my own research this has been a major problem for hundreds of people if not more. I could have died because of a faulty brake system or a bad software update. I need help with this and so do the countless other 2020 gm owners. There is a recall on the 2019 for the exact problem but not the 2020s. GM safety recall N192268090 please advise 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
#11611223August 27, 2024
ENGINE
The contact owns a 2017 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle unintendedly decelerated. The vehicle hesitated and was shaking abnormally while accelerating. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the engine had failed due to the pistons misfiring and then collapsing. The contact was informed that the engine needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 99,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610801August 26, 2024
FUEL SYSTEM, DIESEL, ENGINE
The contact owns a 2017 GMC Sierra 2500. The contact stated while driving approximately 75 MPH, the vehicle started to jerk and vibrate abnormally. The contact stated that the "Engine Power Reduced" warning light was illuminated. The contact pulled off the roadway and placed the vehicle in park(P). The contact depressed the accelerator pedal, and the vehicle was vibrating. The contact stated that the steering wheel was also vibrating abnormally. The contact had taken the vehicle to an independent mechanic, where it was diagnosed and determined that the injector connection was worn, causing the engine to misfire, and needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The contact researched online and related the failure to Technical Service Bulletin Number: 23-NA-027 Fuel Injectors (Fuel System, Diesel). The failure mileage was approximately 104,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610894August 26, 2024
STRUCTURE
The contact owned a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle was shaking erratically, and the vehicle lost motive power. In addition, the contact stated that an unknown warning light was illuminated. The vehicle was towed to the dealer where it was diagnosed with a fractured front-end frame. The contact was informed that the front-end frame needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610906August 26, 2024
EXTERIOR LIGHTING
The backup camera is useless at night. When backing up at night the camera is so dark you cannot see more than a foot or two behind you. If someone or something is behind you you will never see them before it’s too late. The camera is supposed to be a safety feature! I talked to the dealer service department about this and they said it’s a design flaw with GMC and nothing they could do. I Also looked online and see several people complaining about the same thing. This truck has as of today 268 miles on it. I called GMC help center and just got the runaround telling me I would have to go back to the dealer for them to fix the problem even after telling them several times that the dealer said nothing they could do it’s a design flaw with GMC. I believe GMC should be made to do a recall and fix this safety problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610916August 26, 2024
FUEL/PROPULSION SYSTEM
The Fuel pump power control module failed. The part is currently at the nearby Chevy dealership. The safety of myself and two passengers were compromised when the struck suddenly lost acceleration, then shortly after lost engine idle. This occurred while vehicle was in motion on a main highway leaving us stranded on the highway and no warning or indication was given. The problem was confirmed by a dealer. The vehicle and component were inspected by the dealership. There were no warning lamps, messages or symptoms prior to the part failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610682August 25, 2024
EXTERIOR LIGHTING, ELECTRICAL SYSTEM
Backup lights are very dark making it very hard to see at night while reversing to the point where they are unsafe. Cannot see at all in rainy conditions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610614August 24, 2024
SEAT BELTS
Drivers side seat belt cable broke off where it connects to left side of drivers seat. It looks like a clean break I can send pictures
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610634August 24, 2024
FUEL/PROPULSION SYSTEM
My high pressure fuel pump, cp4, went out with no warning while driving causing me to lose power. Was able to bring truck to stop safely but was stuck in middle of roadway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610388August 23, 2024
STEERING
Without warning power steering went out. Flashed code: service power steering; service esm and traction control light. After two restarts, went away like it never happened. I was backing a 24 ft trailer at the time of occurrence. There are numerous other people with the same problem in online forums. I cannot believe that there has not been a recall or even service bulletin regarding this problem. It is a MAJOR safety concern
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610528August 23, 2024
VEHICLE SPEED CONTROL, POWER TRAIN
First date was 04/23/2024 my truck went into limp mode with an alert reading engine and transmission control module problem. Brought it in and they reset the sensors. Shortly after the alert warning goes off again and I turn the engine off and start it back up. It cleared the alert, I brought it back in on 06/15/2024. They reset sensor and fixed a recall on tailgate. I picked up truck, drove it for 2 months and TCM warning came up and threw truck into limp mode while pulling a 2 horse trailer. It turned a 3 hr drive into a 6 hr drive. I brought back to dealer on 8/19/2024 they had it for 4 days and they notified me that this is an on going problem. It is a transmission solenoid valve stuck open and they ordered the part and told me it could be months before the part gets here due to the ongoing backorder from all the other trucks that have the same problem. I use this truck for work and leisure to pull my boat and 2 horse trailer and now I have a vehicle payment to make and no vehicle to use. I cannot use it to work or anything else because it is at the dealer for an unspecified amount of time. I have read online that this is a major problem with this truck and GMC as well as the dealerships know about this problem and they still sold it to me. There are so many complaints online about this GMC 2500 AT4 truck problem that GMC should stop selling this truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11609889August 21, 2024
SERVICE BRAKES
The truck disengages the 5th wheel trailer brakes. The DIC states "Trailer brakes disabled - service required". I intermittently lose trailer braking capability.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11609898August 21, 2024
SUSPENSION, STEERING
The contact owns a 2019 GMC Sierra 1500. The contact stated that while his wife was driving 25 MPH, the vehicle made an abnormally loud sound and the front driver's side wheel detached. The vehicle came to a complete stop. The vehicle was towed to the dealer, where it was diagnosed that the upper control arm had disconnected from the steering wheel ball joint, and it was determined that the upper control joint, steering wheel column, and front driver's and passenger's side wheel needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had received an alignment twenty days prior to the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 70,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610019August 21, 2024
POWER TRAIN
Transmission making a shuttering feeling while driving. Felt in the steering wheel. Dealer said it’s not covered unless still under powertrain warranty. No check engine light while happening. There was a pending code about transmissions control module.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610040August 21, 2024
POWER TRAIN
I was hauling a load and felt a hard jolt near the transmission. The pickup went into limp mode and would not let me accelerate above 45 mph. Took it to a dealership and was told the valve body had malfunctioned. I have been without a vehicle for over 40 days due to the part being back ordered.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610068August 21, 2024
AIR BAGS
I get a recall notice from GM but the dealer won't do the repair without me signing a waiver for any damage they may cause to the dashboard during the recalled airbag removal. Can anyone get GM dealers to do the necessary repair and have accountability for any damage they may do?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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