2022 Denali lifters just went

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GMCnewbee

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Holy Crap! I just passed 3000 miles with my 2022 Denali. I will be paying close attention to it.
 
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Dustindu4

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The dealer has had it 2 weeks with no update on timing. Just parts on backorder.
 
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Dustindu4

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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.
 

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