GMC Complaints

My family and I received a recall notice from GM. We took the vehicle in promptly and had it "repaired" by an authorized dealer. They replaced the oil cap and placed a sticker in our owner's manual. This Christmas, instead of going to Angel Fire, New Mexico, like we do every year to visit family, we stayed home in the Rio Grande Valley. On December 28, 2025, my family decided to go holiday shopping. With kids home from college, and others off from school, I packed my wife and kids (there are six of us) into our 2023 Yukon XL to go shopping. I was driving down a busy 3 lane road with a 55 mph speed limit. By the Grace of God, I had just turned from the center lane to the right (outer) lane when our Yukon lost ALL POWER and the display read something like "Press Start/Ignition." I was utterly confused because I didn't understand what was happening. The accelerator would not work. My college daughter who was in the back asked "Dad, why did you put it in neutral?" I had not, in fact, put the vehicle in neutral. Scared with the passing traffic and sudden slowing of our Yukon, I had not realized that the vehicle had put me in neutral somehow. I tried to shift or click into the drive, but the vehicle would not respond. At some point my wife started yelling "Memo, GET OVER, GET OVER!!" I was able to coast just into the entrance of a gas station. We waited for a towing company to pick us up. Since the episode, we have now learned about this happening to other people. I can't believe that GM is letting this happen to people. We brought our vehicle in as instructed! We trusted that their "test" showed that our engine was fine. We trusted their alleged fix. I'm still in disbelief that the event occurred. I'm a grown man, and I was frightened when this occurred. I'm thankful to the Lord that one of my kids had not been driving the vehicle, or that we had been on our yearly trip to Angel Fire. Please, please, do your best to ensure that this stops happening to families.

Starting at around 1300 miles, we noticed jerking upon acceleration. We took it into the dealership at 1500 due to a check engine light. They replaced the coil in cylinder 1. Then again at 3200 miles, we took it back in for the jerking sensation. They could not replicate the problem. At 4380 miles, we took it back to the dealer for the same issue. They drove it 580 miles and found the lifter valves in bank 1 to need replacement. The repair was performed and then on Saturday 1/17/2026, the car started giving check engine lights every time we accelerated. It would jerk non stop. The car hesitates during acceleration and feels like someone is pressing on the brake as we are accelerating, causing a jerking motion. Coming from a stop, the car feels like it has a hard time accelerating, almost like it is moving against a hard force to try to come up to speed. The car is at the dealer again today for this issue. It is unsafe to drive due to the hesitation during acceleration.

My truck lost power while I was driving. Took to a shop and they found that a had a bad lifter. I have all of my service records from the GMC dealership where I had my vehicle serviced on a regular basis.

I have the 6.2L in the truck… I had the recall done due to lower motor crank bearing failure last fall… It passed the recall. They changed the oil cap and changed to a heavier weight oil… This week, the lower engine disintegrated and had to get towed into the dealership dealer is telling me I need a new motor

Engine started knocking so took to the GMC dealer they said the engine needs to be replaced.

Car driving down highway at ~70 MPH with wife and our three young kids. Engine spontaneously shut off while driving. Electronic and other systems continued to function (power steering, brakes, lights, screens etc). Dangerous situation but was able to stop car in shoulder. Tried turning car on and off but car would not restart. Police were notified but did not come. Tow truck came and tuck car to a GMC dealer (GMC Danvers). Next day when techs arrived at dealer, they were able to start and drive car without issue. There were no present or stored fault codes other than a warning pertaining to the battery. Battery has been replaced and GMC is stating car is now safe to drive. Because issue could not be replicated by dealer and car did not store any fault codes despite the engine shut off, we question whether the issue has been correctly identified and repaired. We noted to GMC that the issue experienced was the same issue associated with the recent recall (for which the car was previously serviced). At this time we do not believe the work GMC performed under recall properly addressed the known engine shut off issue. We requested GMC and dealer perform another picoscope test to conform no issues with crank shaft. GMC refused to perform the service, despite us offering to pay for the test out of pocket. GMC is not offering any additional solutions to identify the cause of the engine shut off issue.

In September of 2025 my 2022 GMC Yukon AT4 6.2L V8 passed the test for the 25V-274 recall. The dealer did necessary fix with the higher viscosity oil. As of January 6th my Yukon has been in the shop with engine failure. My Yukon needs a new engine, so clearly the fix with using higher viscosity oil did not work.

I have the 6.2 L87 with the 10 speed transmission in my 2025 Sierra. At cold start, when auto stop restarts the truck, when the truck downshifts under 20 mph down to 12 mph the engine or transmission makes a chirping/squeak/squeal sounds. Several repair attempts have been made, parts replaced. According to GM and their “field engineer” this is a “normal characteristic of the dfm system”. They claim that it has to do with ignition timing. Not my first dfm truck, but it is the first to make this noise. There is not very many components in “the dfm system” that can make a metal on metal squeak/chirp/squeal sound other than lifters/pushrods, but the noise could be coming from the transmission/bell housing area. I am fairly certain this is an early warning sign of engine or transmission failure. Truck currently has 7,800 miles. If this was an actual “normal behavior” for this engine, all of them would make the same noise. But out of 7 other trucks with the same engine and transmission that i have started/drove, none of them made the noise. It has made this noise since i purchased it brand new. A Gm field engineer “looked” at the truck 3 weeks ago, and I still have not received any paperwork on what they actually did when diagnosing it. Not a single document from the dealership or GM, regarding the 4 days that my truck was at the dealership on the 4th repair attempt. Gm technical service bulletin I was referred to by the dealership is 22-NA-218 Will update this complaint when failure occurs.

ENGINE COOLER LINE DETACHED FROM CRIMP CAUSING ENGINE TO DRAIN OIL RAPIDLY AND ENGINE SEIZED. THE OIL PRESSURE WARNING LIGHT CAME ON, AND THE TRUCK WAS IMMEDIATELY SHUT DOWN (WITHIN 10 SECONDS). WE WERE PUT AT RISK BECAUSE WE TRIED TO COAST OUT OF TRAFFIC AND PARK IT ON A SHOULDER TO PREVENT BEING STRUCK BY ONCOMING TRAFFIC. TRUCK WAS TOWED TO DEALER WHERE WE WERE TOLD THE ENGINE WAS SEIZED AND WE WOULD HAVE TO PAY FOR A NEW ENGINE. DIGGING INTO THIS FURTHER, GM HAD PUT A SERVICE BULLETIN FOR THIS EXACT ISSUE OUT ON THIS YEAR OF TRUCK. (N212326940-01). I BROUGHT THIS UP TO THE DEALER AND THEY TOLD ME THAT MY SPECIFIC TRUCK WASN'T INCLUDED IN THE RECALL AND WOULDN'T BE COVERED.

The lifters in my engine collapsed. This caused a push rod to be bent and the cam shaft to be damaged causing thousands to fix. While I was driving. I could feel the engine malfunction causing my speed to significantly decrease. The vehicle was fixed through an independent mechanic. Mechanic stated that the active fuel management system is the cause for the lifter collapse. There was no warning before the failure