GMC Sierra Complaints

15,732 consumer complaints on file.

#11656814April 25, 2025
POWER TRAIN
The contact owns a 2023 GMC Sierra 3500. The contact stated that while hauling a trailer and driving approximately 40 MPH, the contact attempted to merge into traffic and the message "Restricted Power Mode" was displayed. During the failure the transmission failed to properly shift into a higher gear, and the vehicle failed to exceed 67 MPH. The contact stated that later while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was towed to the local dealer who diagnosed that the transmission valve body was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 33,800.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656816April 25, 2025
ENGINE
I had taken my vehicle to the dealership for a front grill assembly recall by the end of the day they called me and said I needed to leave my truck at the dealership because of a coolant control valve and they don't recommend me driving it. They told me they would get me a rental car but we're not able to get me one until 11 days after my vehicle was in the shop. I told them I needed a truck for work but was told they could only offer up to 44 dollars a day and I'd have to take a vehicle that was given to me or pay out of my own pocket to rent my own. I had the case escalated but have yet to hear anything back from GMC if they have even recieved the part or what is going on with this backorder part! From what I've been seeing and reading this is obviously an ongoing thing with GMC they have known about this coolant control valve for years now but instead of producing them so they are no longer on backorder they continue to produce plenty of new vehicles to throw on the sales lot. I am out of thousands of dollars because I don't have a truck and only 2 weeks into this mess with GMC. The vehicle is paid off and I continue to wander when a part or gmc will give me a better option. So I can continue with my business.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656822April 25, 2025
STRUCTURE:BODY, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
2025 GMC Sierra 1500 shifted from Park to Drive uncommanded, accelerated uphill, and crashed while idling, keyfob outside of vehicle, March 2025. ESIS couldn't replicate and falsely claimed I didn't put it in Drive, despite photos and no one inside.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11656834April 25, 2025
FUEL/PROPULSION SYSTEM, ENGINE
While I was driving on highway, engine shut down and wouldn't restart. I needed to be towed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656835April 25, 2025
ENGINE
Main bearing failure while driving. Had to replace the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656466April 24, 2025
POWER TRAIN
Transmission just would not go them all of a sudden it jersey really hard in second gear an start to pick up speed..cold starts it change gear really hard in second gearc often times slipping then going into gear really violently.. need fix asap dealer has service once with the issue, change fluid an stopped a while ago now issue is back an worst then before.. 44,785 vehicle should not operate this way.4×4 awd trans starts at 6500 to replace an go up to about 13200 to replace
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656472April 24, 2025
ENGINE, POWER TRAIN
was getting on the interstate whenever i hit 70 mph just heard a hard knock in the engine and truck was driving rough. the truck it self dropped to 60mph. before it occurred there was no check engine light on or anything. after i had the dash light up with engine light, brake light, stability light. about a week later took it to the dealer they said it was fuel injectors they replaced it took them about 2weeks but the problem wasn’t resolved but then stated it was the lifters which they said it almost common for this to happened. so i took it somewhere else to get replaced and they said yes it was the lifters and i needed to replace the camshaft because when the lifters go out it will damage the camshaft. all they did to diagnose my problem was hear it was ticking and the knocks also with the codes from the dealer diagnosis. after my repairs it was expensive least to say
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656554April 24, 2025
STRUCTURE:BODY
The grill piece that is recalled flew off while I was driving on the highway on March 14th. I called the dealership that day to get my truck in but could not be seen until April 21st. After having the vehicle at the dealership they said the part to replace is backorder with no ETA of when it will be available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656555April 24, 2025
ENGINE
Had an engine seizure with no warning. The event occurred on 03/22/2025. The vehicle has been in the dealership since then, with no line of sight to a replacement engine. The vehicle had barely over 15k miles. When the engine seized, it went to neutral, there was not power stirring and no breaks. I was fortunate that it was in a residential area, and my speed was below 30 miles an hour when it happened. The dealer is going to replace the motor when they get it, but it sounds like the engine is back ordered, as this exact issue has been happening to multiple vehicles. Like I said, there were no warning lamps, or messages; the engine just stopped working.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656575April 24, 2025
ENGINE
While driving the vehicle the vehicle stopped, and engine seized. I could not move the vehicle out of neutral nor restart the vehicle to get out of the road. It was towed to our local dealership's service department on 2/16/25 and has been there since. They are stating the vehicle needs a new engine and the engine is on backorder. OF COURSE! This seems to be an ongoing issue with the 6.2L V8 engine for GMC vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656600April 24, 2025
ENGINE
The contact owns a 2024 GMC Sierra 1500. The contact stated while stopped at an intersection attempting to make a left turn, the vehicle lost power and the infotainment center failed to operate. The contact stated that the vehicle was on the left side of the roadway waiting for Roadside Assistance for the vehicle to be towed to the dealer. A dealer was contacted. The vehicle was towed to the dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 50,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656605April 24, 2025
ENGINE, POWER TRAIN
While stopped at a light at a busy intersection the truck wouldn’t drive. There were no prior indications to there be an issue, no noises, no check engine lights. The intersection is a multiple lane route with high speed and traffic with rear end collision possible. The truck was determined to have a blown motor.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656660April 24, 2025
ENGINE
We were driving to dinner on March 28, 2025, when our 2023 GMC Sierra truck with just over 22,000 miles started making a clanking sound with major hesitation while trying to accelerate. At highway speeds, the truck lost nearly all power. We made it to the dealership, which was closer than home. Upon pulling in the parking lot, the truck died and we were unable to start it. The truck was actively losing power on the freeway and hesitating, we were fearful it would die on the freeway in 6 pm traffic. On March 29, 2025, we spoke with a service manager who said it sounded like the motor was blown. On April 2nd, Autonation GMC Corpus Christi South confirmed the oil pan was full of metal shavings and they were ordering a new motor. Upon asking for an estimation of how long we would be without our vehicle, the service advisor said he wasn’t taking it out of the bay and we should have it back by April 15. The check engine light did not come on until 1/4 mile from exiting the highway. On April 12, 2025, we texted the service advisor to make sure the truck would be ready on April 15, 2025. He responded that the motor still hadn’t come in and he would let us know when it did. On April 17, 2025, I escalated his from the service advisor to the service manager for Autonation. I was informed the motor had not been ordered, but he would order it and have the motor broken down to meet GM’s requirement. April 24, 2025, motor has been ordered, but no ETA or location of the motor.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656231April 23, 2025
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
I was about 45 miles or so from home on [XXX]. As I left a business my truck went about 100 feet and the engine stopped working . No warning. Truck was towed to a GM dealer in Wilmington Il. It was determined the cause was due to the wiring from the engine ECM that was run over the top of a very sharp plastic mounting bracket for the ECM. The wire had been cut because of the way this was done at the factory. In addition the fuel pump also needed to be replaced . At the time of this, the truck had 39,140 miles on it. I had no warning this was about to happen. No check engine light went on , etc. Most of my route home is on the highway . Had this not happened on a side street , I would have been involved in an accident. I ended up paying $865.42 plus towing for this repair I should not be paying for. The people at the GM dealer told me this has been happening on numerous GM pick up trucks. This is NOT a maintenance issue or an isolated case. 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
#11656245April 23, 2025
ENGINE
Was driving on the highway going 70 mph truck suddenly shut off, was stranded on side of the road heavy traffic.Towed truck to dealership and engine was confirmed seized. No warnings messages or symptoms prior.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656262April 23, 2025
ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER
Odometer Fraud. The contact purchased a 2008 GMC Sierra 2500. The contact stated that while researching the history of the vehicle it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 166,521 and while researching online, it was discovered that the mileage was 207,759.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656274April 23, 2025
ENGINE
GM needs to look at the excessive failures on their Engine Coolant Control Valve on the 3.0 Duramax Diesel engines. Mine failed at under 35K miles and it looks to be weeks or months before a part is available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656277April 23, 2025
ELECTRONIC STABILITY CONTROL (ESC), ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
The contact owns a 2020 GMC Sierra 1500. The contact stated while driving 40 MPH, the vehicle failed to properly respond. There were no warning lights illuminated; however, the message ESC was displayed. The contact stated that the brakes, steering, and a message to check the trailer brakes was also displayed. The contact pulled over to the side of the road and the brake pedal was depressed several times however, the brakes failed to respond, and the vehicle was difficult to control. The vehicle was towed by AAA and then towed to a dealer however, the vehicle was not yet diagnosed. The contact stated that the brakes were inoperable, and the control center was destabilized. The vehicle was not yet repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline. The failure mileage was approximately 125,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656282April 23, 2025
LATCHES/LOCKS/LINKAGES
The contact owns a 2021 GMC Sierra 2500. The contact stated that the VIN was included in NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages) and the main exterior touchpad switch assembly was replaced. The contact stated that after the recall repair the second exterior touchpad switch assembly suddenly short circuited and caused the trunk to open unintendedly. The vehicle was returned to the dealer who stated that that only one exterior touchpad switch assembly was replaced, despite the remedy stating that the exterior touchpad switch assemblies would be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and opened a case. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 55,700.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11656295April 23, 2025
ENGINE
Engine light came on, went to the dealership where I bought the truck less then two weeks prior. The Chevy dealership ran diagnostic test on it. They said it was the Engine Coolant Control Valve. This is a common problem with the 3.0 Duramax diesel engine. I belong to a group on Facebook with the same truck as mine. they are all having the same issue. We are waiting for a recall. the part is on back order and cost $300 just for the part plus labor. I bought the extended warranty and they said it did not cover this part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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