Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 GMC Yukon owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 GMC Yukon. The contact stated that while depressing the brake pedal, added pressure was needed before the vehicle came to a stop. The contact stated that the vehicle hesitated or jumped before coming to a stop. Additionally, the contact stated the transmission was slipping. The contact stated that while driving at various speeds, the vehicle stalled before self-correcting. The contact also stated that while idling at a stop light and attempting to accelerate, the vehicle hesitated, but gradually accelerated as needed. The contact stated that the rear taillight intermittently failed to illuminate. The contact stated that the check engine warning light was illuminated. The transmission fluid was flushed; however, the failure recurred. …
The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving at an undisclosed speed, the transmission was inoperable. The contact stated that when the gear shifter was shifted into reverse, the vehicle would drive forward. The contact also stated that when the gear shifter was in neutral, the vehicle would reverse instead. The vehicle was driven to the residence. The contact stated that the transmission fluid had leaked onto the ground. The vehicle was towed to an independent mechanic where it was diagnosed with a failed transmission. The contact was informed that the transmission needed to be replaced. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 102,000.
The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving at undisclosed speeds, the contact heard an abnormal grinding sound, and the transmission was shifting hard. While making a turn, there was an abnormal sound coming from the vehicle. There were unknown warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 14V152000 (Power Train). The vehicle was taken to an independent mechanic, who informed the contact that the failure was due to the transmission. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 100,000. The VIN was not available.
My 5 children and I experience a traumatic experience in afternoon traffic as my 2015 GMC Yukon failed to pick up speed while waiting to make a left turn at a traffic light. The vehicle - no matter how hard I pressed on the gas didn't accelerate immediately which almost cost an accident. The vehicle rode smoothly for a few minutes then out of nowhere - it started jerking and stuttering bad for 15 seconds or so then would go back to riding smooth. When pressing the brakes - it seems to "lock" to a certain extent, so I have to press really hard on the brake to slow down/stop the vehicle sometimes makes a strange noise when doing so. I took the vehicle to be accessed by a service center in my area - it was at that time that I was told that my vehicle issues are known common GMC issues in these vehicles & more unfortunately. …
My vehicle is currently in the shop getting the motor worked on for a bad lifter. From the information the mechanic provided me this is a common issue with the vehicles that have the Active Fuel Management system. They are seeing many of these vehicles have to come in and have very expensive repairs. My first quote I received was $16, 000, they told me I needed a whole new motor and this assessment cost me $365 and a rental car while they looked at the truck. Now it is in the shop again and the estimate is $6000 to machine the cams as there are metal shavings in my oil. I had to again rent a rental vehicle and have not had my truck for a week. This is the third mechanic that has seen multiple of these motors have to be replaced or repaired due to this issue. I kept up on my oil changes and other recommended car maintenance and so did the owner before me. I had my last oil change approx. …
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. …
Today my GMC Yukon, lurked forward so hard it hurt my neck, shoulders, and back, I know this is dangerous and has happened before, the lurches are becoming more forceful and powerful and I'm afraid now of driving it far or distance, I don't want anything to happen to me or my family while driving, I must be able to get to appointments etc. This today scares me really bad and I need help with this vehicle...Had I not braked quick I would have been in the pond in front of me the lurk was hard pain shot from back to neck and I went forward, had on my seat belt loges...If not better in the morning I will seek medical attention, I'm really hurting...GMC said noting wrong on both occasions I asked when it was mild in 2019, again 2023, nothing...no...also no warning lights are on
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.
The contact owns a 2015 GMC Yukon. The contact stated that while in reverse(R), the vehicle jerked while depressing the accelerator pedal. There was no warning light illuminated. The contact became aware of fluid spots on the driveway while the vehicle was parked. The vehicle was taken to an independent mechanic who discovered a leak in the transmission oil cooler line. The dealer then informed the contact about NHTSA Campaign Number: 14V152000 (Power Train); however, the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was notified of the failure and transferred the contact to the NHTSA Hotline to report the failure. The failure mileage was unknown.
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.
Related recalls
Power train › Transfer case (4-wheel drive)
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.
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.
Power train › Automatic transmission › Cooling unit and lines
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…
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.
Transmission complaints in other Yukon years
Frequently asked questions
How common are transmission problems on the 2015 GMC Yukon?
NHTSA has 54 complaints about the transmission & drivetrain of the 2015 GMC Yukon, 9% of the model year's 602 complaints.
Is there a recall for 2015 GMC Yukon transmission problems?
Yes — NHTSA recall 14V-374 (transfer case (4-wheel drive), Jun 27, 2014); NHTSA recall 14V-152 (cooling unit and lines, Mar 31, 2014). Recall repairs are free at authorized dealers.
At what mileage do 2015 GMC Yukon transmission problems start?
Half of the complaints with a recorded mileage happened before about 15,000 miles, and 61% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 1 injury to transmission & drivetrain problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.