GMC Complaints

I have a 2019 GMC AT4 and it has stalled on the highway multiple times and smokes every time I started. I have read that the engine in it has been recalled on multiple other years but the one I purchased needs a $25,000 repair and it’s not safe to drive. There is not a current recall, but I’ve read that this engine on almost all the other trucks and SUVs that have it have had problems.

What component or system failed or malfunctioned, and is it available for inspection upon request? The engine, battery and alternator seem to be failing or not working together. Car will sit in garage for less than 12 hours and will not start the next morning. Take the battery and alternator to get tested and everything passes. Have had the battery tested at multiple times but believe this is due to engine recall. Check engine light comes on, we take it to the GMC dealer and they say they can't determine the issue or why it is happening. How was your safety or the safety of others put at risk? Car will not start or check engine light comes on in middle of trip. Has the problem been reproduced or confirmed by a dealer or independent service center? Service center can't "reproduce" any of the issues and are telling us they have no way of checking why the light comes on in software module. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes, check engine light comes on and then goes away.

Ticking sound coming from engine, possible damaged camshaft lobe due to lifter roller failure. It can cause sudden engine failure, significant power loss, and unexpected stalling while driving, increasing crash risks. The issue is linked to AFM (Active Fuel Management) system failures. The problem has been diagnosed by dealer service department. No warning lamp or message, problem first appeared 7 April 2026.

The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving approximately 45 MPH, the transmission inadvertently shifted from drive (D) to first gear. The check engine warning light was illuminated. The vehicle was pulled over to the side of the road and then towed to the dealer, where it was diagnosed, and it was determined that the valve body needed to be replaced. The vehicle was not repaired because parts were not available. The manufacturer was notified of the failure. The failure mileage was approximately 103,000.

The contact owns a 2021 GMC Yukon XL. The contact stated that while accelerating approximately 35 - 40 MPH from a stoplight, the contact believed that the engine was going to seize. The message Low Power Mode was displayed on the instrument panel, and the vehicle went into LIMP Mode. The vehicle was immediately taken to the dealer, who retrieved DTC: P0700, P0776, and P1881. The contact researched and became aware of GMC Recall Number: N22382220; however, the VIN was not included. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed that the VIN was not included. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 167,000.

The contact owns a 2013 GMC Acadia. The contact received notification of NHTSA Campaign Number: 14V118000 (Air Bags); and requested to be removed from the recall distribution list. The local dealer was contacted but the manufacturer was not contacted.

There is a click/ticking noise when vehicle is started. Noise gets louder and faster when accelerating. Have taken vehicle to 2 mechanic shops and been told by both places it is bad lifters and exhaust manifolds. I took this truck in because of loss of power. This issue has put me in unsafe/ dangerous positions on multiple occasions.

The contact owns a 2018 GMC Acadia. The contact stated that upon parking the vehicle and attempting to turn off the vehicle, the message "Shift to Park" was displayed while the gear shifter was in park(P). The contact parked the vehicle and turned off the vehicle after several attempts. The contact related the failure to an unknown recall; however, the VIN was not under recall. The dealer and the manufacturer were not contacted. The vehicle was not diagnosed or repaired. The failure mileage was approximately 149,000.

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving approximately 55 MPH, the vehicle decelerated unintentionally and failed to accelerate above 35 MPH. The vehicle failed to respond when the accelerator pedal was depressed. The contact arrived at the residence and was able to coast into the driveway; however, the vehicle failed to drive forward or reverse. The check engine warning light was illuminated at the time of the failure, with the message “Reduce Acceleration - Drive with Care” displayed. The contact waited for a while and then attempted to move the vehicle, and the vehicle drove forward slowly, and while attempting to reverse(R), the engine revved abnormally but failed to respond. The gear shifter was shifted to drive, but the vehicle failed to respond, and the engine continued to rev until depressing the brake pedal. The vehicle was towed to the dealer, and the contact was informed that the valve body needed to be replaced. The vehicle was not repaired because the part was on back order. The contact researched and associated the failure with NHTSA Campaign Number: 24V797000 (Power Train). The manufacturer was informed of the failure, and it was confirmed that the VIN was not included in NHTSA Campaign Number: 24V797000 (Power Train), and it opened a case. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 82,000.

On several occasions, this vehicle break pretty hard for no apparent reason in a red rectangle with a crash symbol came up on the windshield a few times we’ve had people behind us which created dangerous situation and there’s no apparent reasons for this vehicle breaking there was nothing in front of us at times there were vehicles in the other lane, but at other times there were no vehicles around at all I was wondering if this what’s happening with other GMC’s or or any GM product.