2022 Denali lifters just went

[GMCnewbee]

Holy Crap! I just passed 3000 miles with my 2022 Denali. I will be paying close attention to it.

 

[Dustindu4]

The dealer has had it 2 weeks with no update on timing. Just parts on backorder.

 

[Dustindu4]

Saga has come to an end. After 3 weeks my truck is fixed and running fine. They replaced both banks of lifters, which I assume means both heads. I drove home and got 20.5 mpg, it has never run that good before. I was getting 12 before max. That is a good warning sign I think your lifters are going, sharp decrease in MPG. Just my experience.