2017 GMC Yukon XL: complete transmission failure

Filed Jun 23, 2025 · Transmission · MI

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)

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 27, 2024 · Engine · NJ

There was a pump in the heart of the transmission. The dealer said told me that was leaking fluid. Apparently this was a faulty hose within the transmission which leaked fluid in the transmission. Therefore, my transmission died. This was a severe I could have been a very dangerous situation if my kids had been in the car. I’ve had to pay almost $8000 for the transmission to be fixed and yeah I see that on the line there was some sort of recall but my dealership is saying there was not. I bought this car brand new and I’ve had it for seven years. I’ve never had an issue with the transmission on any of my vehicles ever.

Filed Feb 23, 2024 · Engine, Transmission · NE

Car has 100k miles on it. At 59k the fuel injectors went out and needed to be replaced. Then the transmission went out and needed to be replaced, then the front differential needed to be rebuilt, also had to replace the struts. Now the lifters are going out and that, plus likely the camshaft, need to be fixed. Total costs for all the above is close to $20,000. If not fixed these problems could easily result in catastrophic engine failure while driving leading to personal injury and death. I see that there is a class action lawsuit for the latter.

Filed Nov 23, 2022 · Transmission · IL

Transmission failed with no symptons. No indications of potential issues prior. All recommended service checks done with vehicle, oil changes etc... 75,026 miles. Pulled up to a red light in heavy traffic and transmission would not engage. No forward, reverse, or in Low 1. Tried 4 wheel and 2 wheel drive. Nothing. Yukon 2017 XL SLT model.

Filed Oct 12, 2021 · Transmission · UT

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.

Filed Jan 27, 2021 · Engine, Seats · 55,000 miles · FL

My vehicle transmission went out motor mounds went out and seat stopped working at condensor went out. And a few other things. Suv is a 2017 we have already spent over 11,000 in 2 years fixing it now the AC is 2400 to get fixed.

Filed Mar 2, 2020 · Engine · 91,000 miles · AL

At 91k miles my transmission went out completely. The vehicle was less than 3 years old at time of incident

Filed Nov 17, 2019 · Acceleration, Electrical · 88,000 miles · TX

Transmission went out at 88k miles. My sister in law also has a 2017 bought from another state and it went out at 79k miles a week after mine. Passenger side tail light works if you push on it then randomly goes out (wiring/electrical issue). Of course the drivers side tail light is the only one on recall. Cruise control set itself at over 100mph and rapidly accelerated until I hit the brakes. I received a recall for the breaking system specifically for my VIN number that needs to be fixed now that my transmission is complete.

Filed Sep 9, 2019 · Transmission · 12,100 miles · MI

Everybody was telling me not to buy a 15 or 16 gmc denali so I because they known to have transmission problems so for my thanksgiving gift I brought a brando 2017 yukon 8 passenger less in 2 years now the transmission has gone badd took a to the shop I need a brand new transmission I do not have $3800 to replace the transmission I feel it should be a recall on this vehicle you can feel free to reach me [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).