2022 GMC Yukon XL: check engine light

Filed Oct 30, 2026 · Transmission · TX

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 recall although when I put my VIN it does not indicate the recall for my vehicle

Filed Oct 14, 2026 · Engine, Transmission · LA

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

Filed Oct 1, 2026 · Engine, Transmission · KY

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.

Filed Jun 29, 2026 · Brakes, Driver assistance · FL

On [XXX] brake system failure, service ESC, Forward Collision system unavailable and check engine lights came on the dashboard and the vehicle had no brakes. Taken to dealership and Conley GMC advised the Main Module was burnt out. $1200.00. Car was “fixed” and sent out. The next morning all the check engine light along with all other failure lights came on after module was replaced. Taken back to dealership and they advised that everything had to be manually programmed which was done and sent out. [XXX] same dashboard errors were up again. Taken back to dealership and they advised they needed to reprogram manually that was done and sent out. The next morning all lights were back on. It was the weekend so they wouldn’t take the car or provide a rental. May 23rd car was taken back to dealership and Conley advised the master cylinder was bad and had to order parts. $4300.00 in repair cost along with 2.5 week at the dealership and $150.00 in rental cost. I found online that GM knew of this issue with the 2022 GMC Yukon XL vehicles and a recall was made however this vehicle VIN number was not included in this recall. I notified Conley GMC and they stated they were not informed of this issue. I made a claim with GM and told them of this issue and my safety concerns and they advised that because this was not included in the recall that there was nothing they could do and they would not be covering financial assistance or reimbursement and they called this an inconvenience instead of a real safety issue as each time my vehicle had no working brakes. No working brakes causes safety concerns for everyone in the vehicle as well as other vehicles. All work orders are at Conley Buick GMC in Bradenton, Fl. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 19, 2026 · Engine, Fuel system · TX

My 2022 GMC Yukon XL with the 6.2L L87 engine was previously subject to the federal safety agency Recall 25V‑274 / GM Recall N252494000 for L87 engine loss of propulsion. The recall was closed by the dealer as “PicoScope Inspection — Engine Passed / Update Engine Oil Type,” with the oil/cap/filter remedy. The vehicle was later brought back to the dealer for engine noise/knocking, check-engine light, and engine oil light/oil warning concerns. The dealer has now confirmed that the dipstick was not picking up oil, the oil level was severely low, the oil condition was severely degraded, and abnormal engine noise was heard. My VIN also shows active GM Special Coverage N252494003 through 1/15/2032 or 150,027 miles. The dealer previously stated that the underlying PicoScope pass data from the recall inspection is no longer available to the dealership after submission. This is not the first oil-related concern. During a prior service visit in September 2025, around the same time the L87 recall was completed, the dealer documented an engine oil low message and an upper oil pan leak causing the low-oil message. I am concerned the L87 engine may be failing after the recall remedy was previously marked complete, creating a risk of engine failure or loss of propulsion while driving. I am also concerned the current engine/oil/noise condition is being treated as customer-pay/out-of-warranty before the root cause is fully diagnosed or reviewed by GM under Special Coverage N252494003.

Filed Apr 13, 2026 · Engine · CO

What component or system failed or malfunctioned, and is it available for inspection upon request? The engine, battery and alternator seem to be failing or not working together. Car will sit in garage for less than 12 hours and will not start the next morning. Take the battery and alternator to get tested and everything passes. Have had the battery tested at multiple times but believe this is due to engine recall. Check engine light comes on, we take it to the GMC dealer and they say they can't determine the issue or why it is happening. How was your safety or the safety of others put at risk? Car will not start or check engine light comes on in middle of trip. Has the problem been reproduced or confirmed by a dealer or independent service center? Service center can't "reproduce" any of the issues and are telling us they have no way of checking why the light comes on in software module. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes, check engine light comes on and then goes away.

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 Mar 4, 2026 · Transmission · 90,000 miles · TN

The contact owns a 2022 GMC Yukon XL. The contact stated that while driving approximately 45 MPH, the vehicle jerked as if the brake pedal was depressed and failed to accelerate as intended, with the check engine warning light illuminated. The message "Reduced Acceleration - Drive with Care" was displayed. The contact stated that when the vehicle was stopped, the gear shifter was shifted into reverse, but the vehicle failed to respond. The vehicle was towed to the dealer, where it was diagnosed, and determined that there was a failure with the transmission valve. The contact was informed that the transmission valve needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 90,000.

Filed Feb 17, 2026 · Transmission · 65,000 miles · MN

The contact owns a 2022 GMC Yukon XL. While the contact’s wife was driving at an undisclosed speed, the vehicle unexpectedly went into LIMP Mode, and the check engine warning light illuminated. The vehicle failed to accelerate to exceed 30 MPH. The vehicle was taken to the dealer, where it was diagnosed, and it was determined that the transmission valve body had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the federal safety agency Hotline for assistance. The approximate failure mileage was 65,000.

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 Nov 6, 2025 · Fuel system · TX

While driving northbound on I2 at approximately 70mph I experienced a sudden loss of engine power. Vehicle would not accelerate and engine ultimately powered off. I was able to move across three lanes of traffic and pull over on the side of the highway. I attempted to restart the vehicle but was unsuccessful and after about 10 minutes the engine managed to start. The ‘check engine’ light was on after the incident and upon arriving back home I ran a code scan that resulted in code P129F indicates a problem with the fuel pump control module. There is recall #N252516900 dated 9/11/2025 which covers this issue for 2021 models only. This occurred on a 2023 model.

Filed Jun 30, 2025 · Engine, Suspension · OK

I had a sudden catastrophic engine failure 3/13/25. I previously filled out an the federal safety agency report, but I would like to add to my case. My engine was towed to the dealership and replaced. 4/25/25 the check engine light started coming on intermittently again. The service suspension notification, replace the battery in your key fob notification (which was replaced in February), and the check engine light have been coming on intermittently since then. All of these things occurred prior to engine failure the first time. The dealership would not look at our vehicle again until our vin was called for the recall. 6/22/25 the suspension sensor was replaced and the recall “test” was done. 6/27/25 the service suspension light was back flashing and GM was unable to find any codes. 6/29/25 the check engine light was flashing again. I believe my vehicle is going to have another engine failure. GM did a multi-point “inspection” and says it is safe to drive.