2017 GMC YUKON XL

ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER

Odometer Fraud. The contact purchased a 2017 GMC Yukon XL. The contact stated that upon taking the vehicle to an independent mechanic for repair, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 203,000 and at the time of the vehicle servicing, it was discovered that the mileage was 335,142 in the diagnostic report.

EXTERIOR LIGHTING

I was stopped at a traffic light and was informed by another driver that my right tail lamp was not working. There were no warning lights indicating that there was a problem. When I arrived home, it began working after I tapped on it. A few days later, the left tail lamp stopped working. I began to realize that both tail lamps were only working intermittently. Upon inspection by the mechanic, I was informed that this is a common problem with my vehicle and that each replacement part is approximately $900, totaling nearly $2,000 to replace both lamps. This is an obvious safety hazard for myself and for others who may not be able to judge when I am stopping, especially if I have to stop suddenly.

POWER TRAIN

My transmission failed again after being replaced by General Motors certified dealership. The transmission in question has failed again after less than five months being back in service. In 2024 and 2025 my vehicle has been in and out of the service department at other dealerships and they cannot repair the vehicle according to the dealerships they do not have the staff for it. General motors will not stand behind the transmission as they have now labeled it as a part so they will not have to provide transportation. According to dealerships in my area in Michigan, they do not have the staff or the parts to service my vehicle. I contacted General motors customer service multiple times regarding the situation. We truly have a bad transmission again in my vehicle. The transmission in question is a C8 transmission that has failed due to shuttering and downshifting, which the replacement remanufactured transmission for $8000 continues to fail. General motors will not buy back this vehicle or address this ongoing issue. I truly believe I am not the only person with transmission issues as this is a major defect by the manufacturer, which is General Motors. Will you please look into my complaint is this is caused severe hardship to my family. General Motors needs to take responsibility for this failure to the transmission. I’ve had seven other items that have failed also on this vehicle, including the engine. Thank you for your time and consideration looking into this matter. Sincerely [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

POWER TRAIN

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.

UNKNOWN OR OTHER

Transmission shudder, shifting hard, other Transmission issues

UNKNOWN OR OTHER

Lifter stuck 6000.00 dollars worth of damage on 2017 Yukon . All lifters and cam shaft need to be replaced . Vehicle is at foley automotive so I don’t have a receipt yet [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

SERVICE BRAKES

I am filing a complaint regarding a serious safety issue with my 2017 GMC Yukon XL related to the brake vacuum pump. According to recall information (NHTSA Recall ID: N192268490), certain 2015-2017 GMC Yukon and Yukon XL vehicles are equipped with a defective vacuum pump that may decrease in output over time. This defect reduces power brake assist, resulting in increased braking effort, a hard brake pedal, and extended stopping distances. These conditions significantly increase the risk of a crash. I have experienced symptoms consistent with this issue, including vibrating brake pedal with no slippage, a hard pedal, ticking noises from the engine, a 'Service Brake Assist' warning message, and difficulty braking. This issues usually occur under 10 mph. These problems compromise the vehicle’s braking performance and pose a direct threat to the safety of myself, my passengers, and other road users.

UNKNOWN OR OTHER

I report years ago the seat belts wasn’t work, also all time I report with GMC vibrations and stops power at roads or low power to go in the freeways some times are to , and screen for gos and radio wasn’t work, this was a bad car . I take some videos but the agency try to charge me to check the car. Al of those put my person or others person in a risk because I lost the power in the middle of the road also, 2 of the seats belts are not working 1 of those is for my child, and the screen for gps can make me crazy at roads the system report construction or objects at road and I decrease the velocity in roads and the car was behind me slow or the screen jump from gps to radio or news or whatever some times the touch doesn’t work and I was lost in the roads driving around. The last thing is the vibration went I use the brakes to stop the car is shaking this was my first new car and is bad car and unsafe car

SEAT BELTS

I report years ago the seat belts wasn’t work, also all time I report with GMC vibrations and stops power at roads or low power to go in the freeways some times are to , and screen for gos and radio wasn’t work, this was a bad car . I take some videos but the agency try to charge me to check the car. Al of those put my person or others person in a risk because I lost the power in the middle of the road also, 2 of the seats belts are not working 1 of those is for my child, and the screen for gps can make me crazy at roads the system report construction or objects at road and I decrease the velocity in roads and the car was behind me slow or the screen jump from gps to radio or news or whatever some times the touch doesn’t work and I was lost in the roads driving around. The last thing is the vibration went I use the brakes to stop the car is shaking this was my first new car and is bad car and unsafe car

ELECTRICAL SYSTEM

I report years ago the seat belts wasn’t work, also all time I report with GMC vibrations and stops power at roads or low power to go in the freeways some times are to , and screen for gos and radio wasn’t work, this was a bad car . I take some videos but the agency try to charge me to check the car. Al of those put my person or others person in a risk because I lost the power in the middle of the road also, 2 of the seats belts are not working 1 of those is for my child, and the screen for gps can make me crazy at roads the system report construction or objects at road and I decrease the velocity in roads and the car was behind me slow or the screen jump from gps to radio or news or whatever some times the touch doesn’t work and I was lost in the roads driving around. The last thing is the vibration went I use the brakes to stop the car is shaking this was my first new car and is bad car and unsafe car

ENGINE

The engine developed a ticking noise which turned out to be bad lifters and bent lifter rods, and a bad valve lifter oil manifold.

POWER TRAIN

While driving it will jerk into gear shifting is rough.

POWER TRAIN

Transmission shudder lunching hard up and down shift

SERVICE BRAKES

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

UNKNOWN OR OTHER

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