The transmission failed at 59,700 miles. The transmission will shift up and down by itself. The transmission is revving up when trying to pass and the vehicle will go limp for a few seconds and then the gear with kick in really hard. In stop and go traffic the transmission slips constantly and could cause an accident due to the limp mode.
2015 GMC Yukon: complete transmission failure
5 of the 530 complaints about the 2015 GMC Yukon describe complete transmission failure.
- owner complaints
- 5
- of this car's complaints
- 1%
- recalls
- 2
Is there a fix? There are 2 recalls and 230 service bulletins for this area of the car. See below
Complete transmission failure by model year
What owners say
Transmission failure. Remanufactured transmission installed at 160,000 miles. Transmission started shifting abruptly and failed completely on interstate 26 in South Carolina. Had to limp home in a lower gear. Towed to a repair shop for complete replacement with a remanufactured GM transmission Total repair $4500. No warning indication of the problem, thankfully my wife was not driving this vehicle at the time. No inspection except by mechanic who stated based on his experience we got 10,000 miles more than normal for a GM 6L80 transmission. He also stated his shop replaced 5 of those transmissions in the month of August 2022. Documentation available on request.
Transmission Code P0700 and P0796 ( pressure control) I was on the Interstate and my 2015 GMC YUKON SLT Engine locked up and shift down to 2nd gear. Causing other cars to almost hit me from behind and possibly causing an accident. I had to quickly veer off on the side of the road so that they wouldn’t hit the back of me. Immediately my engine light came on. Didn’t have this problem prior to the breakdown. Brought it to GMC dealership they told me my torque converter was bad along with Computer TCM and Valve body. They said I need a new transmission. My SUV have 132k miles. I called around at other transmission shops and they ALL said they are getting 3-4 GMC YUKONS in to fix a week and knew exactly what the problem was with SUV. They couldn’t understand why GMC wasn’t correcting the problem. Also, last year had to replace the Cam Shaft, Lifters and Catalytic Convertor that’s was $6000 now they tell me $5500 for Transmission. That’s $12000+ in repair in lease than 1.5 years. Never have I had this much major problem on a vehicle. This is a major safety issue especially on interstate.
Transmission failure at 167,000 miles. Transmission failed during a 100 mile trip initially slipping and eventually would not engage. Vehicle traveled on I 26 and could have resulted in accident on this 80 mph interstate. This vehicle is typically driven by my wife. No warning and GM Onstar provided vehicle diagnostic check in days prior to failure with no issues. Technician advised this was the 3rd vehicle this month in his shop with 6L80e transmission failure and said they normally fail around 150,000 miles. This is a known failure on numerous general motors vehicles across the product line. Repair required replacement of 6l80e transmission with a factory rebuilt transmission. Cost $4,100.
I am writing to notify you about a problem with the transmission in 2015 gmc yukon xl. Gm is aware of a problem. They issued an internal notice to dealers in february 2016. However, they have not notified to owners in the form of a recall. On several occasions, my vehicle jumped forward, while driving in the city, when it was stopped, in drive, with brake engaged. I reported transmission problems to my local dealer but they repeatedly ignored my concerns. They kept giving excuses that didn't make sense. I finally pressed on, refused to take my vehicle back and reported the problem to several executives. The problem was finally diagnosed under different conditions as stated in the first internal document in march 2016. There was a problem with the transmission. They finally replaced the transmission for "one that didn't have a problem". Gm admitted there are problems with transmissions and the problem has been corrected in newer vehicles. They have yet to issue a notice to current owners that their vehicles are at risk. I owned a 2015 gmc yukon xl but chose to sell it over safety concerns and lack of appropriate response from gm corporate. With 2 young children, I spend a lot of time around schools (like most owners of large gm vehicles). I could have injured or killed someone. I feel it is my obligation to bring this situation to your attention. If you intervene, you can help to avoid any injuries in the future. It is clear that gm will not voluntarily protect the public.
Service bulletins that may apply
- Power train
- This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage...
- Power train
- This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- Power train
- This service bulletin provides information on some vehicles that may rock or move slightly forward or...
- Power train
- Power train
Related recalls
Power train: transfer case (4-wheel drive)
- What is wrong
- General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Silverado and GMC Sierra vehicles, and model year 2015 GMC Yukon and Chevrolet Suburban and Tahoe vehicles. In the affected vehicles, an electrical signal short may cause the transfer case to shift to neutral without the driver's input.
- Risk
- If the transfer case switches to neutral while the vehicle is parked and the parking brake is not in use, the vehicle may roll away increasing the risk of injury to bystanders. If the transfer case switches to neutral while the vehicle is being driven, the vehicle would lose drive power, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will re-program the software in the transfer case control module, free of charge. The recall began in early August 2014. Owners may contact General Motors customer service at 1‑800‑222‑1020 (Chevrolet), or 1‑800‑462‑8782 (GMC). GM's number for this recall is 14192.
Recall number 14V374000 · Recall details
Power train: automatic transmission: cooling unit and lines
- What is wrong
- General Motors LLC (GM ) is recalling certain model year 2014 Chevrolet Silverado Light Duty Regular Cab, Double Cab, and Crew Cab 1500 series and model year 2015 Suburban and Tahoe; GMC model year 2014 Sierra Regular Cab, Double Cab, and Crew Cab 1500 Series and model year 2015 Yukon and Yukon XL vehicles equipped with a 6-Speed Automatic Transmission (feature code MYC). The subject vehicles may have a transmission oil cooler line that is not securely seated in the fitting.
- Risk
- If the line is not securely seated and transmission oil leaks from the fitting, the oil could contact a hot surface and cause a vehicle fire.
- Remedy
- GM will notify owners, and dealers will inspect the transmission oil cooler line connection and repair the vehicles, as needed, free of charge. The recall began on May 19, 2014. Owners may contact Chevrolet at 1‑866‑694‑6546 or GMC owners may contact GMC at 1‑866‑996‑9463. GM's number for this recall is 14121.
Recall number 14V152000 · Recall details
Questions about the 2015 GMC Yukon transmission failure
Is complete transmission failure a common problem on the 2015 GMC Yukon?
5 of 530 owner complaints about the 2015 GMC Yukon (1%) mention complete transmission failure. The model year with the most reports is 2016.
Is there a recall or service bulletin for this on the 2015 GMC Yukon?
There are 2 recalls and 230 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2015 GMC Yukon
Headlights 20Jerking 13Loss of power 13Brake failure 10Engine failure 9Check engine light 8Fuel pump 8Power steering loss 7Stalling 7Sunroof shattered 6Fire or smoke 5Misfire 5Steering lock-up 5
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