2021 GMC YUKON XL Complaints

The contact owns a 2021 GMC Yukon XL. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. No warning lights were illuminated. The vehicle was towed to a local dealer, where it was diagnosed, and determined that the engine needed to be replaced. 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 vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 66,000.

The engine has a knocking noise. Very noticeable. Started around 3 weeks ago and has done it on multiple occasions.

Manufacturer Recall NumberN252494000 NHTSA Recall Number25V274 Recall StatusRecall Incomplete, remedy not yet available

My 2021 GMC Yukon XL Denali is part of the April 2025 recall for the 6.2L V8 engine defect. The dealership confirmed the engine must be replaced, but the part is on backorder, potentially for several months. In the meantime, GMC only authorized a GMC Acadia as a courtesy vehicle. The Acadia is not comparable to our Yukon XL. We are a family of six, and while the Acadia has a third row, there is almost no cargo space with it in use. Our Yukon XL has over three times the cargo capacity, which is necessary for safely transporting luggage and sports equipment during our frequent trips (2–3 times per month). Because of this, we have already been forced to rent a larger SUV at our own expense for a recent trip. GMC’s Courtesy Transportation Program states that owners should receive comparable transportation during recall repairs. Despite escalating through the dealership, GMC Customer Assistance, and even the regional manager, we were denied a comparable loaner or guaranteed rental coverage. This leaves our family in an unsafe and impractical situation while waiting months for the recall repair.

The blinker randomly stops alerting. The blinker will still flash but the audio will cut off and stop working randomly. I have brought this to my local GMC dealer, whom I bought the car from, twice now with no resolution. The service department can’t figure out what is causing the issue. I have video evidence upon request.

On Thursday August 14 while driving our traction control light and engine light came on along with the ESC light while traveling out of state. The car felt like we were driving on a rumble strip. We immediately took it to the nearest auto repair shop, only a few minutes away. They reset the battery and dash lights and we took it for a test drive. All the lights came back on after a couple of feet and loud knocking sounds started. Our emissions light then also came on and a strong exhaust smell was emitted. Each time the engine was started the knocking grew louder and the engine was severely struggling and sounded very wrong . The shop put their diagnostic tool to use and identified misfiring on cylinder 5. Upon further inspection they identified camshaft irreparable failure. We had it towed to the Platteville WI GMC Dealership Friday Aug 15. Where they confirmed camshaft failure and informed us our engine needed total replacement. Our safety was at risk since our engine failed while exiting the highway.

Fuel pump power control module failed while driving. This part was included in a recall in 2021 but our VIN appears to not have been impacted.

The contact owns a 2021 GMC Yukon XL. The contact stated that after start-up, the vehicle was driving roughly before the vehicle stalled. The vehicle was towed to the local dealer, who diagnosed the vehicle with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not yet repaired. The contact had previously received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The mechanic related the failure to the recall, but parts were not yet available for the recall repair. The failure mileage was 50,000.

The contact owns a 2021 GMC Yukon XL. The contact received notification of NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING). The dealer was contacted; however, the contact was informed that parts were not yet available. The vehicle was not repaired. The manufacturer was contacted about parts not being available. The contact stated that while driving at 70 MPH, the vehicle lost automotive power. There was no warning light illuminated. The contact pulled over, and the vehicle was towed to a local dealer. The vehicle was not repaired. The failure mileage was unknown.

I was driving from New Orleans with my family when traveling at 75 mph when it’s like the transmission started straining and the engine was losing power/pressure it’s like the engine or transmission was struggling I’m not sure what was causing it but it was a scary experience knowing I’d my kids and my wife with me and we were out in the middle of nowhere.