2017 GMC Yukon XL: engine stalls while driving

Filed Mar 22, 2026 · Fuel system · IA

Engine stalling, a rough-running engine, reduced power mode (sluggish acceleration), a "Check Engine" light, or the vehicle failing to start. It started puttering really bad and died in the middle of the intersection. Check engine light came on. I got it to start, was really hard start and puttered bad then it died again and then I got it to start again, was a really hard start and puttered and died again. I was able to start it again get in the driveway but couldn’t go very fast. Check engine codes present are P2635 and P018B

Filed Dec 8, 2025 · Brakes, Engine · 148,246 miles · UT

The contact owns a 2017 GMC Yukon XL. The contact stated that the check engine warning light was illuminated. The contact stated that while idling, the vehicle started shuddering violently. The contact stated that while driving to the residence at an undisclosed speed, the vehicle stalled and failed to restart. The vehicle was pushed into a church parking lot. The contact's father used a scanner to scan the vehicle, and a DTC for engine misfire was retrieved. The contact's father replaced the spark plugs, but the failure persisted. The vehicle was towed to an independent mechanic, where it was diagnosed and determined that the engine was blown. The vehicle was then towed to another independent mechanic, where the engine was replaced. Additionally, the contact stated that upon depressing the brake pedal, the brake pedal was stiff and required to be pumped several times for the vehicle to respond as intended. The contact stated that the failure occurred while starting the vehicle and while driving at various speeds. There was no warning light illuminated. The contact stated that the brakes had been replaced annually, but the failure persisted. The contact stated that the brake pedal shuddered upon starting the vehicle. The contact received a notification for ABS from the OnStar Mobile App. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 148,246.

Filed Jun 12, 2025 · Transmission · VA

In May 2025, my vehicle suddenly started jerking, shaking, and almost stalled out while driving. I was on a busy 3 lane roadway with 6 passengers total. As I would try to accelerate, the power was significantly decreased. I felt it jerk between shifting several times. My check engine light came on. I was so scared that someone would hit my vehicle and injure us. I brought it to a GMC dealership. They said that my transmission failed, metal in the transmission fluid. How is this possible? Upon researching this problem, this is a common issue with the 2017 GMC Yukon Denali. There are class action law suits and lemon law lawsuits against GMC regarding this problem which causes major safety concerns. My vehicle has been well maintained with lots of service records to prove it. I have babied her and I’ve never towed anything. This transmission issue needs to be addressed and recalled. I need a new transmission which will cost between $5,000-$7,000. This is just horrible and disappointing regarding the quality and reported issues that are not being recalled by GMC.

Filed Jan 24, 2025 · Brakes · ND

Transmission Failed at 100,000 miles stalling vehicle brakes pushing back on me.

Filed Feb 15, 2023 · Engine · 104,000 miles · NC

The contact owns a 2017 GMC Yukon XL. The contact stated while driving approximately 70 MPH, the vehicle stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer where it was diagnosed that the cam shaft, manifold, and lifters needed to be replaced. The vehicle was repaired. The manufacturer was contacted and referred the contact to the federal safety agency Hotline. The approximate failure mileage was 104,000.