*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Engine and engine cooling
The contact owns a 2019 GMC Yukon XL. The contact stated that while driving, there was a loud knocking sound coming from the engine compartment. The vehicle was cautiously driven to the residence and parked. The vehicle was later towed to an independent mechanic to be diagnosed, and it was determined that the engine active fuel management lifter in cylinder #1 had failed, and the contact was informed that the engine needed to be replaced. The engine was replaced, and the vehicle was repaired. The local dealer and manufacturer were notified of the failure, but no assistance was provided. The failure mileage was 117,200.
Jun 20, 2026 · 117,200 milesEngine
Vehicle started showing a po308 code. Called sewell gmc In midland where I purchased the vehical they were 2 months out on diagnostic services. So I took it to another shop. They ran a camera into the problem cylinder and for scaring on the walls. They said it was due to the afm system and the engine was unrepairable. So now I am out 17,000 dollars and stranded over 700 miles from my home due to a manufactured defect.
Aug 10, 2026Engine
Unknown Truck engine will cut off in the middle of high speed traffic. More than three times.
Feb 1, 2025Unknown or other
My vehicle keeps showing a front camera warning and we went to the dealership multiple times and they were unable to diagnose the problem. This seems to be a widespread common problem among many owners and itâs a safety concern affecting parking and forward collision.
Jan 1, 2026Engine
The contact owns a 2019 GMC Yukon XL. The contact stated that while driving at an undisclosed speed and coming to a stop at a stop sign, the vehicle started shaking violently, with an unknown flashing warning light illuminated on the instrument panel. The vehicle was towed to a dealer and was diagnosed with a lifter failure. The dealer informed the contact that the vehicle was covered under warranty; however, upon a further follow-up, the dealer informed the contact that the warranty had expired. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 47,000.
Jun 21, 2026 · 47,000 milesEngine
The contact owns a 2019 GMC Yukon XL. The contact stated that while driving and while the vehicle was parked on several occasions, there was a tapping sound coming from the engine compartment. The vehicle was taken to a dealer where it was diagnosed that the lifters were inoperable, and the lifters and or the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 158,000.
Jun 15, 2026 · 158,000 milesEngine
I was driving vehicle and came up to a stop sign, once I was clear to go I stepped on the gas heard a clunking sound and the car shut off.
Feb 16, 2026Engine
Truck Trembling/Rumbling notices when idle . The truck has seen 2 mechanics dealers inspection, concluding that the truck needs a new engine.
Mar 1, 2026
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.