2017 GMC YUKON Complaints

My husband and I were driving down the freeway with our three children when without any warning, we heard a loud explosion and what felt like something hit our vehicle. There were no other cars near by. When we pulled off the freeway into a gas station to look at the vehicle the sunroof had a huge hole in the center. The remaining class attached to the vehicle was all shattered. There was shattered class on the closed shade. We didn't know what happened. It was very traumatizing. We thought someone threw something at us or something had fallen on the vehicle. If the sun shade wasn't closed, glass would have entered the vehicle and could have caused injury to us or our children in the back seats.

Passenger rear tail lamp/brake lamp failure. This is a known issue with GMC Yukon vehicles MY 2015-2019 with LED tail lamps. Metal within the lamp vibrates loose and cause the brake lamp to fail - thus resulting in no BRAKE Lamps illuminating at braking. This would be the second time this issue has occurred in 4 months, with the previous repair occurring rear drivers side and logged with NHTSA for this issue under 11436519. Opening this case as now the other side (passenger failed) with the EXACT same issue.

The driver's side brake light and tail light has failed completely and the passenger side brake light and tail light fails intermittently. This is a safety issue that should be recalled. The vehicle only has 50k miles on it and I should not have to pay $800 per tail light to fix it!

LED Taillight failure REAR DRIVERS SIDE. This seems to be a common occurance amongst GMC Yukon Denali XL, where the circuit housing for the LED board begins failure with fissure within the electrical contact points. The fissure soon erupts causing a shunt within the LED semiconductor and causing the brake lights to cease functioning.

We were on the freeway with my 4 small children. The freeway speed is 75 mph. The car had been jerking and hard shifting for over a week and I had it scheduled with a mechanic. As we were driving on the freeway, it lost total power as cars were going to the left and right around us. I was barely able to get it to the side of the road without being hit. This could have been tragic! I took it to the mechanic and the transmission is shaving a lot of metal (that was in the bottom of the pan). I have had to pay to have a whole new transmission redone. This is absurd with a car that is only 4 years old.

The steering wheel doesn’t always turn back straight like the electric power steering has a momentary lapse in working.

The contact owns a 2017 GMC Yukon Denali XL. The contact stated that while driving at an undisclosed speed, the contact was alerted by other drivers that the taillights were inoperable. The vehicle was taken to the dealer and diagnosed as a power train failure. The driver’s and passenger’s side taillights were replaced. The manufacturer was made aware of the failure and opened a case. The contact was referred to NHTSA to file a complaint. The failure mileage was approximately 131,000.

Driving on city streets at approximately 45-50 MPH the transmission began shifting erratically and made significant squealing noises. After stopping, the transmission could not be shifted to another gear and was stuck in drive (D) for approximately 30 minutes. After evaluation from a professional auto mechanic, these transmissions were equipped with the incorrect fluid type from the factory that has since been taken off the market. The transmission needed to be replaced at ~99,000 miles.

There is a known issue with the wiring harness that warns the driver by vibrating the driver's seat. The original wiring harness will short out causing malfunction of the safety feature. The wiring harness has been redesigned to correct the defect, yet GM has not issued a recall. The safety feature is an important factor in the operation of the vehicle and when this feature does not work property, safety is compromised.

Brake lights are going out due to cracking in the LED strip. Slight jars to lights will make them work for a short time.