I have a 2021 Sierra Denali 1500 6.2L. Lifer problem caused complete engine failure at 13000 miles. Dealer it was towed too had 7 more in service same problem. So if they only replace 4 lifters. Obviously this problem is widespread.
Those of you that have had this same nightmare.
Does the other side fail?
Is the replacement the same faulty lifters that caused the failure?
Any feedback appreciated.