GMC Yukon XL

Vehicle started showing a po308 code. Called sewell gmc In midland where I purchased the vehical they were 2 months out on diagnostic services. So I took it to another shop. They ran a camera into the problem cylinder and for scaring on the walls. They said it was due to the afm system and the engine was unrepairable. So now I am out 17,000 dollars and stranded over 700 miles from my home due to a manufactured defect.

My 2021 GMC Yukon Denali features the 6.2L L87 V8 engine. This vehicle was previously serviced for the GM voluntary recall regarding engine bearing failures, and the dealership completed the remedy by inspecting the motor and changing the oil to the thicker 0W-40 specification. Since completing this recall fix, the vehicle has developed an intermittent rough idle and sputtering behavior. The dealership has been unable to duplicate the intermittent issue and claims it falls under normal…

Driving on the freeway the engine started making super loud knocking noises for while going 70mph . Then it immediately died everything turned off no power I was barely able to get it off the freeway while coasting. And my husband tried to push it off the road more but when it dies we are not able to put the car in neutral !! It’s a push button gear shift ! When there’s no power the buttons don’t work!! It was 105 degrees out that day in Sacramento , the car had zero power the battery is not…

Lifter/camshaft/engine failure. GM knows this is an issue with these models/years. They only want to cover half of the repair sticking me with a bill for $5600. Safety is a concern because they know this is an issue and not issuing a recall currently. I waS driving when this happened which could have caused me to get into an accident. Very dangerous. Car is currently as GMC Started by showing low oil in between oil changes last year. Went in for an oil change and told them about it.…

Second engine sized at 87,834 miles. Third engine installed three weeks later.

Engine shut off with no warning, all electronics disabled and couldn't shift out of park. Was driving down the road at approximately 50mph, Yukon shifted itself into neutral. Vehicle previously complied with the 25V-274 recall and passed, was operating on the new oil that GM recommended.

On August 17th, 2026 while approaching a nature preserve entrance at approximately 1 mph, my 2023 GMC Yukon Denali Ultimate suddenly accelerated on its own, without the driver pressing the accelerator pedal, striking a split-rail fence and a tree. Airbags did not deploy. The front collision system didn't issue any alerts about the fence and tree. A GM software update had been installed a couple of days before this incident . In the weeks prior, the vehicle had also intermittently failed to hold…

2023 Yukon XL AT4 with 67k miles suddenly had lifters fail. GM service said cam scored & metal debris all the way through to the pan, requiring total engine replacement. Vehicle was very well maintained with premium fluids and parts.

The contact owns a 2023 GMC Yukon XL. The contact stated that while driving approximately 30 MPH, the vehicle stalled. The vehicle failed to restart. The vehicle was towed to a dealer; however, the failure was not duplicated. The manufacturer was not notified of the failure. The failure mileage was 49,460.

My vehicle was taken in as part of the 25v-274 recall. It passed and was given the new oil. It underwent a second oil change using the new oil and before the third oil change at around 46,000 miles the engine was having trouble. I took it in for the oil change and the engine issue. I have barely been told anything but from what I understand I have a camshaft issue and need new lifters. I haven't seen my car in 12 days and have received almost to no updates.