2022 GMC Yukon XL power train problems

“Check engine light came on and car was shuttering, and locks would lock and unlock. Took it in to dealership, they then said I needed a transmission flush. I did that and paid for it. I experienced the same issue, check engine light again, car turned off while heading out of town, pressed the push start and it turned right back on. Took it to the dealership again and they said wiring harness needed to be replaced did that and paid for it. Issues continued, now the doors are locking and unlocking, I could now not back up, almost as if the back was locked up, gears would not shift. Took it to the dealership again and they now said the transmission needed to be replaced. We did that and paid for it, the issue has resolved, after several trips to the dealership and expenses later. Wanted to have this documented, for any other who may having this issue. Could have been worse had the car not turned back on right away while driving out of town. *CVT Transmission Service: vehicle has a shudder when driving, recommend a transmission flush *Transmission Valve Body: Found fault code P0776 (Transmission Control Solenoid Valve 2 Stuck Off) I do see there is a transmission…”

“Transfer case shutters in AWD and 4WD. Almost locks up in 4WD in reverse in a turn. Shutters in both AWD and 4WD. Dealer claims this is normal so just drive in 2WD. The vehicle did not do this before. I test drove new 2026 exact same vehicle. It did not do what my vehicle does. GM will not entertain a buyback. Offered GM voucher points. The engine has already been replaced. It appears to be consuming oil so the dealer is conducting an oil consumption test now.”

“On 9/11/26 the Yukon XL flashed a check engine light and message stated to service within 7 business days. 30 seconds later the power shut off and barely coasted to the side of the highway. Engine would turn over but not start. Could not shift into neutral b/c wouldn’t start. Error message: ECM - Engine and Transmission SystemP102AThe Engine and Transmission System is not performing as expected. An issue has been detected in the Fuel Management System used to maintain, control and monitor fuel consumption. If the check engine light is flashing, a misfire condition has been detected. A misfire increases vehicle emissions and could damage the emission control system on the vehicle. Please reduce vehicle speed, avoid hard accelerations, avoid steep uphill grades, and reduce any cargo loads such as a trailer.Service within 7 days Had vehicle towed to dealership. Was repaired and picked up on 9/25/26. Paid for new battery over $400.00 On 9/29/2026 Yukon XL would not shift into reverse. The error message on the car stated. TCM - Engine and Transmission SystemP2718. Odometer: 76117 Miles”

“The vehicle was being driven from work to home on the interstate, when a loud ticking/knocking noise was heard while exiting the interstate. The motor lost power when trying to accelerate while pulling into our driveway. It was noticed that the "Service Transmission" light came on as well. It was towed to the Chevrolet dealership in Bardstown, KY where they did diagnostic testing and stated that the motor had "locked up" and will have to be replaced. The service person at the Chevrolet dealership stated that the transmission could have been affected also because the service transmission light was on as well. We are lucky the loss of power and the engine locking up did not occur on the interstate where multiple people could have been injured. The ticking/knocking and the complete engine locking up occurred within a 5 minute time span. The check engine light and service transmission lights did not come on until the vehicle coasted into our driveway. The vehicle had participated in the recall of putting a higher viscosity oil in by the Chevrolet dealership.”

“The transmission went out on my 2022 GMC Yukon XL. The GMC dealership identified the part needing to be replaced is the Transmission Valve Body. This is the exact part that GM Internal Recall Number N252536750NHTSA Campaign Number: 26V-085 says has been recalled for year 2022 GMC Yukon XLs, and yet, my vehicle's VIN number is not on the recall list. How is it possible that my particular 2022 GMC Yukon XLs (VIN) doesn't qualify as one covered under the recall, when the exact problem that this recall was released for, and the exact part that this recall calls for a manufacturer's repair/replacement, occurred to my vehicle? My vehicle (VIN #: [XXX] needs to be added to the recall list, because this exact part failed on my vehicle.”

“I think it is a transmission type of failure. I'm not sure of the exact mechanical specifics. While putting the vehicle in reverse, driving and or accelerating it feels like the transmission is locking up and then releasing, and then locking up again. It felt very dangerous for that to happen while driving down the road. I took the vehicle to a local mechanic that was near by for assistance and he said I should take it to a dealership because there was a recall due to that issue on my type of vehicle that he knew about. So I call a dealership to make an appointment, tell them I think the issue is due to a safety recall due to the transmission locking up. They check my Vin# and say there are no recalls for my vehicle, even though it falls in the same year, make, and model of affected GM vehicles , therefore they could not make a recall appointment for me. Even though i was experiencing the same type of issues on the same type of vehicle thats included in the recall. I did not have any warning lights before, or while driving. The day it happened, I drove the vehicle to work, parked, was at my office all day. Came out to go home and put the SUV in reverse and it…”