GMC Complaints

Transmission failure upon acceleration through intersection. Engine high revved went into Low Power Mode. Was lucky to not be rear ended with sudden loss of acceleration. Truck would also not go above 40 safely.

I have been trying to get this recall done for 1 year. I have placed 3 calls over this time and they say the part is on back order. This is dangerous as it is a recall on the driver airbag. A year is too long to wait. Please advise on what can be done. Dealership: GMC Thompson Raleigh, NC

recently when starting truck brake message alert comes across on dash reading brake error, and not to drive above 45 miles per hour and brakes are NOT totally operational, meaning brake pedal has alot of play in it to bring truck to a stop. Have to turn off vehicle , sometimes repeatedly before it apparently resets computer system. This has now occurred four times in last five months. Events and dash warning message very similar to recall issued 3/3/20, but listed as "complete" on recall data base. Need to seriously and immediately looked into and corrected!

The contact owns a 2017 GMC Acadia. The contact stated that while attempting to turn off the vehicle, the vehicle failed to turn off. The contact shifted from park (P) to drive(D) and was eventually able to turn off the vehicle. The contact stated that the letter P(park) was outlined in yellow and was illuminated on the instrument panel. Additionally, the contact stated that while attempting to close and lock the driver's side door, the door failed to lock securely. The contact stated that the failures occurred simultaneously. The contact stated that the failures were intermittent. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 74,000.

The 6.2 l98 engine has seized in my 2022 GMC Yukon XL Denali with under 50k miles. It has been sitting at a dealership waiting for a new engine sense February 13th 2025. It is still unknown to me when I will be getting a replacement engine.

The engine developed a ticking noise which turned out to be bad lifters and bent lifter rods, and a bad valve lifter oil manifold.

The contact owns a 2017 GMC Sierra 1500. The contact stated that on four separate occasions while driving at highway speeds, the vehicle shut off with the check engine warning light illuminated. The contact stated that after each failure, the vehicle was towed to a dealer and the contact was informed each time that the failure was related to the active fuel management system. The manufacturer was notified of the failure after the first failure and the contact was informed that the repair would be covered under warranty. The contact stated that each time that the vehicle was towed to a dealer, the lifters and pushrods were replaced under warranty; however, the failure returned almost a month after each repair. After the most recent failure, the dealer pushed the manufacturer to replace the engine. The vehicle was repaired; however, the contact expressed a fear of driving the vehicle due to the repeated failures. The failure mileage was approximately 60,000.

-3800 Miles on GMC Yukon/Engine Failure -Driving vehicle down highway and it just quit, would not turn over engine made a clunky rattle noise and nothing, no warning no lights nothing. Definitely a Safety issue as no way to get it off the road! -Dealer took engine apart and said Valve broke off and put a hole in cylinder and ruined the engine block, says we need a new engine, can't get one from GM for estimated 7 Months!!

One bank of lifters went out while under warranty and were repaired then the other ones went out shortly there after.

I would like to express my frustration and concern regarding a serious issue with our brand-new 2025 Yukon Denali truck. The vehicle, which has only 934 miles, has experienced a transmission failure. We picked the vehicle up on [XXX] and since February 27th, it has been at the dealership for repairs—now more than a full month. Initially, the torque converter was replaced, but that did not resolve the issue. After only a mile or two of driving, we returned the truck back to the dealer for further evaluation. Subsequently, after consulting with technical assistance, the dealership confirmed that the valve body needs replacement. As I'm sure you're well aware, this part is backordered nationwide, adding significant delays to an already troubling situation. It is hard to comprehend how a brand-new truck can fail virtually right off the assembly line. I am disappointed that we have had to deal with such a significant defect and even more disheartened by the extensive wait for repairs. This experience has left us questioning the safety and reliability of our vehicle. Given the circumstances, I believe more should be done to resolve this matter quickly and effectively for us. GM has been well aware of this transmission for years. The most recent recall dated December 13, 2024 for the same issue on the 2021 – 2022 model years of most of GM’s product line suggest this problem has not only been a known issue for many years but with the failure of my new vehicle for the same issue proves that they have not done anything about it. This leads me to believe that my safety is just as at risk as anybody else in the earlier named recall and therefore this recall should be extended to include all current models. GM should be forced to resolve this issue for existing vehicles before they build any new defective vehicles and sell them to unsuspecting customers like myself. Thank you for hearing me out, I look forward to your guidance. Jason FYI there is an interesting article o INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORM