2022 GMC Yukon XL: harsh or hard shifting

Filed Aug 21, 2026 · Engine · OH

No warning the car made a loud clunk that shook the car. The engine began a severe knock with almost compete loss of power. The dealer confirmed the entire engine had to be replaced. I was told my car passed the PICO test recall and only required an oil viscosity change. There is something very wrong here. These engines are not right. I have handicapped twins and have zero confidence it won't leave my family stranded.

Filed Mar 13, 2026 · Engine · CT

Car would not engage in reverse. Stranded and needed a tow into dealership. Also experienced rough shifting especially when accelerating in lower gears. Dealership said It needs a new Transmission Control Valve which is a known issue with my model and there has been a recall yet my specific VIN was not included in this recall!!! Dealer says the part needed is on backorder with no listed date of when it will be coming back in stock. Quoting me $3300 out of pocket to cover this repair once they can locate the needed part. No loaner car available and this is our main family vehicle!!! They called earlier to tell me they found the needed part at another dealer but it’s now going to cost me $600 more bc they had to buy it off the other dealership. What is happening!? This is not ok! My car should be covered under the recall!

Filed Mar 10, 2026 · Transmission · MI

I was driving down the road and my vehicle went into limp mode, and I had reduced acceleration. I got to my destination then could not reverse the vehicle out of the parking space, reverse would not engage and allow me to have acceleration power. Because the parking space was on an incline we could roll backwards then drive forward, in limp mode, to a nearby mechanic. The vehicle diagnostic codes they got were: no reverse, p0700, p0776 and p18a1. They told us the repair needed would be to remove and replace the valve body assembly for $2,862.40. There were no warning lights that came on prior to the incident. Once the vehicle went into limp mode the check engine light came on. We had a Chevy dealer and got a second opinion at a transmission shop to check the transmission in December 2025, because we were concerned about a possible hard shift when shifting vehicle from park to drive, but both places concluded there were no problems. We now have had it towed to a transmission shop for a second opinion. It is available for inspection. We see a recall issued to other 2022 gmc Yukon xl that does not come up when we put our vin # in, but could possibly apply to our vehicle too is recall #: N252536750.

Filed Jan 28, 2026 · Driver assistance, Engine · OR

Two weeks ago I heard a faint ticking sound. I had a professional look at it and they said that I had a cylinder sticking and to add an additive the next oil change. I still had 1,500 miles until then and so I did not do that. That noise stopped a day later. Last Friday, it started to tick again, and then it got very loud. I live rurally and was 45 minutes from home. The engine went from ticking to full clunking and very low power in just a moment. I luckily found a small engine shop to check the codes, but as I was parked there, the car would not go in reverse! He had to clear the codes to get it to go into reverse. I had to then slowly drive 45 minutes back to our small town. I drove to and immediately parked it at our local repair shop. It can not be driven now. The lights that came on were the Rear axle system off, forward collision system, service traction control, engine light flashing, and service ESC light. Not to forget that it would not go into reverse. Also the suspension system seemed to malfunction and not lift or lower the car.It seemed to clunk and try, but nothing happened. The whole car basically went down. I see there is a recall for this year or car, but my VIN is not included. I am hoping that it will be included as the repair shop is telling me it will be close to $10,000.

Filed Apr 22, 2025 · Transmission · TX

While driving the transmission will slip/hard shift very aggressively causing the rear tires to lock up. This would happen at unpredictable speeds (anywhere between 10mph-65mph), this occurred for about 2 weeks before vehicle ever gave a code. VERY scary and dangerous especially if you are in traffic since it essentially "brake checks" those behind you. The last incident that finally provided a code occurred at 50 mph when the rear tires completely locked forcing the vehicle in park. Could no longer drive the vehicle after this. The error code states that a rear body valve is needed for the transmission which the dealer is unable to get and neither the dealer or manufacturer can provide any estimate of arrival. Has been in the shop for almost 2 months now waiting.