2021 GMC YUKON Complaints

A valve in the transmission is sticking causing a loss of power, engine light warnings to flash, and hard gear shifts from park to drive or reverse. First occurred on 5/25/25, went to the dealer service department on 5/26/25. Part still not available and it’s been sitting at the dealership since.

My 2021 Yukon Denali (83264 miles), Fuel Pump Control Module failed causing car to lock up without any warning as my son was turning vehicle onto a main street. Car would not restart and wasn’t able to be put into Neutral to push it to side of road to a safer location. Police came and put cones around it until tow truck came the next morning. Tow operator got it onto a flatbed, which was difficult due to weight of the vehicle and not being able to put into Neutral (fortunately it was in 2wd which helped). It scares me to think what would’ve have happened if my son had been on the busy highway that he was planning to be on the next day or when it was on earlier that day. Vehicle is still at the dealership waiting on the replacement part which apparently is hard to get.

The contact owns a 2021 GMC Yukon. The contact stated while driving 40 MPH, the vehicle unexpectedly stopped, and the engine seized. The contact stated that there was not enough power from the engine to drive the vehicle to the shoulder of the road. No warning light was illuminated. While attempting to restart the vehicle, the vehicle failed to restart. In addition, the contact stated that his family were occupants of the vehicle during the failure. The contact stated that it was a frightening event for his family. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was informed that parts were unavailable to repair the vehicle. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000. VIN tool confirms parts not available.

knocking, banging, engine noises, illumination of the check engine light, engine performance issues at high rpm and fluttering at low rpm. oil consumption but not leaking. The engine needs to be replaced as the bearing is shot, cylinder 7 is shot. I believe this is directly related to NHTSA Recall #25V-274 and Manufacturer Recall #N252494000

The contact owns a 2021 GMC Yukon XL. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. 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. VIN tool confirms parts not available.

The contact owns a 2022 GMC Yukon. The contact stated while driving at an undisclosed speed, the vehicle stalled, and the engine seized. The contact attempted to restart the vehicle however, the vehicle failed to restart. There were several family members inside the vehicle during the failure. No warning lights were illuminated. A nearby driver attempted to jumpstart the vehicle; however, the vehicle failed to start. The vehicle was towed to an independent mechanic where it was diagnosed with a failed fuel pump modulator. The contact was referred to the dealer for assistance. The vehicle was then towed to the dealer where it was diagnosed with a failed fuel pump modulator. The contact was informed that the fuel pump modulator needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact referenced NHTSA Campaign Number: 21V739000 (Fuel system, Gasoline); however, the VIN was not included in the recall. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 52,000.

Per the dealership where we purchased our vehicle, one lifter gave out and damaged the camshaft. Since there are no guarantees if we replace one lifter this will not happen again. We chose to purchase a new engine rather than purchasing a rebuilt engine. I don't know if this qualifies as a safety issue but we were afraid to drive our vehicle. It has now been at the dealership since May 15 waiting for a new engine. The following warnings showed up on our dash: leveling suspension engine failure stability control head on collision Our GMC denali has a 6.2L v8 engine

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving approximately 55 MPH, the vehicle decelerated and stalled. During the failure, the check engine warning light was illuminated, and the vehicle was pulled over to the shoulder of the roadway. The vehicle was towed to the local dealer, who diagnosed and determined that the fuel pump control module had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the NHTSA Campaign Number: 21V739000 (FUEL SYSTEM, GASOLINE). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 80,000.

Acceleration failing. Knocking of motor, winding sound, a huge clicking sound when accelerating, and engine burning very excessively. We have 4 children and its very unsettling to say the least on a 100,000 vehicle we paid for. I hope and pray you include our vin number with the 6.2 recall as the dealer is well aware of this problem long before the current recall. It's very unfortunate that our vin wasn't part of this very serious safety issue. Thank you

The GMC is starting to loss power in the engine. GMC has not send me an appointment to inspect the engine. This vehicle is my only transportation to work and doctors appointment. This is not fair for a powerful company like GMC is not taking the ownership of the engine in this vehicle. I need action asap. Please assist. Thank you