GMC Sierra Complaints

15,732 consumer complaints on file.

#11521625May 11, 2023
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I were driving at low speed and all 4 wheels locked causing the vehicle to suddenly stop without notice. I almost got rear ended. I had to put vehicle in park and turn off and turn back on to get it to move. Again it did the same thing stoping with brakes locking suddenly, almost causing an accident in middle of road. There was no warning at all.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11521337May 10, 2023
EXTERIOR LIGHTING
The contact owns a 2022 GMC Sierra 1500 Denali. The contact received notification of NHTSA Campaign Number: 22V903000 (Exterior Lighting) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11521172May 9, 2023
POWER TRAIN
Vehicle has a history of hard shifting and jumping forward under certain conditions. In April 2019, while on the highway traveling about 65 mph, the vehicle slipped out of gear and do no longer be driven. No warnings were displayed prior to the incident. The dealer replaced the torque converter and repaired a broken transmission shaft under warranty. Hard shifting and jumping continued to occur, but the vehicle went without incident for another 4 years. Yesterday, 5/8/2023, the transmission went out again while driving around 35 mph. Vehicle is currently at dealer. My research has shown there is a class action lawsuit in 26 States for transmission issues for GMC vehicles between 2015-2019. NHTSA needs to take action and issue a recall. Losing a transmission while driving is dangerous.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11521259May 9, 2023
STEERING
Steering wheel stopped working
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520900May 8, 2023
SUSPENSION
Driver's side front wheel assembly separated from the vehicle. It was hard to tell exactl what happened but I am told that it may have been a ball joint failure. I was driving in the middle lane on the highway with cruise control set to 70MPH. All of a sudden, my truck jumped up and my truck starting pushing towards the left median. I thought I had a tire blow out. Luckily there wasn't anyone in the left lane at the time and I was able to get to the grassy left median. If there was another vehicle in the left lane and or if the left median wasn't grass, this would have caused a major accident as I has no control over where the truck was going. When I got out I saw that my entire wheel had separated from the vehicle and it was on its face under the truck. I did not hit a pothole. There was no prior indication that anything was wrong with the assembly. A tow truck was called and brought the truck back to their shop. The assembly had to be replaced, (ball joint, axel, steering control arms etc.). I called my local GMC dealer and they have nothing being reported of this issue but when I looked online I've seen multiple reports of premature failures of ball joints. Total repairs so far have been $3,400.00 and I still need to replace a cracked rim. Repairs will be over $4,000 when all said and done.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520989May 8, 2023
UNKNOWN OR OTHER
I have a GMC Sierra 2021 Denali. The vehicle currently has less than 16,000 mile and is at the dealership service department for lifter replacement. This is an extensive repair considering how new the vehicle with low miles. From extensive online research and collaborating with others, this is a common concern with multiple GMC vehicle that's been on GMC radar starting in 2017. GMC haven't yet issued a recall for these products and the consumers are footing the bills. Please put pressure on GMC to rectify their wrong.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520791May 7, 2023
POWER TRAIN
Bearing in transmission failed at 75000 miles. Took to dealership and they said truck needs new transmission. Truck makes rattling noise in transmission pan. Dealer said that oil was full of metal shavings. Dealer also said that this was second truck in 2 weeks with same issue. No warning lights or check engine lights came on. Dealer advised that the transmission could fail and to park it until I can pay $6000 for transmission replacement. Dealer heard rattling and confirmed metal shavings. Transmission failure could result in traffic hazard or accident if transmission loses all drive ability.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520744May 6, 2023
POWER TRAIN
Vechicle is giving codes of Emissions warning, P0102, P154B and P154D
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520581May 5, 2023
AIR BAGS
The contact owned a 2020 GMC Sierra 1500. The contact stated that while he was stopped in traffic, he was rear-ended, which caused him to crash into the vehicle in front of him. The contact stated that smoke was seen coming from the air bag; however, the air bags failed to deploy. The contact had not sustained injuries. A police report was filed. The vehicle was towed to a salvage yard. The manufacturer was not made aware of the failure. The approximate failure mileage was 64,000.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11520296May 3, 2023
SERVICE BRAKES
The contact owns a 2008 GMC Sierra 1500. The contact stated that while driving approximately 75 mph when another vehicle suddenly got in front of their vehicle causing them to depress the brake pedal. The brake pedal failed to press downward. The contact had to continue to press the brakes a total of 8 times. The trailer brakes would cause the vehicle to decelerate but it would continue to accelerate and increase in speed. By the 8th attempt and with the trailer brakes activated the vehicle eventually decelerated and came to a stop. The tire pressure warning had been illuminated. The contact had not taken the vehicle to the dealer. The manufacturer was not made aware of the failure. The approximate failure mileage was 116,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520350May 3, 2023
ENGINE
According to inspection by my local GMC dealership, the engine oil cooler lines leaked/detached, as a result the engine assembly needs to be completely redone. When driving on the highway the car began flashing to immediately pull over and turn the vehicle off, the engine became very hot and was smoking and oil was found all over the ground upon inspection after immediately stopping the vehicle. This vehicle has been inspected by the Carlsbad GMC/Buick Dealership. There were no warning messages prior to this event. The car has consistently received all recommended preventative maintenance and oil changes. As a consumer I am now on the hook for over $15,000 in repairs, after complying with all maintenance recommendations from the manufacturer. There is an active recall for an identical model and make as this car for the same issue, the recall number is: N212326940 (customer satisfaction program number) and DCS5833 (Global safety field investigations number). I am very confused as to why this recall has not been applied to my vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520202May 3, 2023
AIR BAGS
The contact’s father owns a 2004 GMC Sierra 1500. The contact stated that after she inserted the key in the ignition and started the vehicle, the front driver’s side air bag exploded, without warning. The contact sustained an injury to her left arm, hand, neck, and head that required medical attention. The vehicle was not diagnosed or repaired. The contact stated that an unknown dealer was notified of the failure and the contact was advised to call the NHTSA Hotline. The manufacturer was not notified of the failure. The failure was approximately 200,000.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11520222May 3, 2023
STEERING
The truck started making a grinding noise when turning steering wheel left and right. I took the truck to local GM dealer/mechanic for inspection. It was diagnosed as a failing steering rack and recommended replacing the steering rack. A failed steering rack can cause partial or complete loss of steering and potential vehicle accident. As of this time, GMC cannot provide a replacement steering rack and there is no estimated availability timeline.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520232May 3, 2023
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
The contact's husband owns a 2019 GMC 1500 Denali. The contact stated that the rear camera failed to operate as intended while engaged and attempting to park the vehicle. The contact added that while shifted to reverse, the camera screen remained completely black. The vehicle was taken to a dealer where it was diagnosed and determined that the rear window and control panel needed to be replaced due to a leak originating from the rear window. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 9,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519959May 2, 2023
UNKNOWN OR OTHER
Door panel gets loose over time catching on inside of door frame making it difficult to open a door. This is a safety hazard in the case of an emergency so I removed my door panel completely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519962May 2, 2023
ELECTRICAL SYSTEM
While towing a new 2023 Airstream trailer on Interstate route 95 in New Hampshire my GMC Sierra truck driver display flashes a " check Trailer wiring" error message. When this message appears all brake function to trailer is lost makeing driving unsafe. The connection sometimes can intermittently and continuously reconnect momentarily and brakes reengage for seconds until they disengage again with repeated "check Trailer wiring" error message . Sometimes the brakes just disengage end never reconnect until error codes is cleared by GMC dealership. It's extremely unsafe to pull off exit and have trailer brakes reengage because they jam with high gain because vehicle brakes need to be applied very hard to over compensate for "NO" trailer brakes. GMC dealership has identified certain error codes with their computer but NO suggested fix!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520006May 2, 2023
POWER TRAIN
Transmission Control Module Failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519923May 1, 2023
POWER TRAIN
The transmission is almost banging into gear vibrating at high speeds the shifts can jerk the vehicle and cause an accident
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519285April 27, 2023
POWER TRAIN
The contact owns a 2023 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, the contact smelled an abnormal odor. The vehicle was taken to the dealer; however, no failure was found. The contact stated that while driving at an undisclosed speed, the contact heard an abnormal sound and smelled an abnormal odor. The vehicle was taken back to the dealer, who diagnosed the vehicle with an oil leak; however, the dealer was unable to determine the location of the leak. The manufacturer was not made aware of the failure. The failure mileage was approximately 6,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519351April 27, 2023
UNKNOWN OR OTHER
Safety factor dash is cracking manly. around air bag on passenger side. across dash behind instrument panel. If air bag deploys it would send plastic before air bag, destroying your face even eyes. the GMC dealer said cracking happens on all chevy and GMC trucks.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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