March 23, 2025 at 7:18 am
#857214
Participant
The failure is so much worse than the lifters. There is a systemic failure at GM right now where they are ignoring these problems, and have been, since the AFM/DOD system first debuted in 2007.
It is cheaper for GM to replace lifters/motors under warranty than it is for them to fix the problem. My 2011 Silverado LTZ 5.3L grenaded itself at 64k due to the lifter problem, and here we are 14 yrs later, and still seeing the same issue.
Every new generation GM doubles down on the AFM/DOD/DFM system, using the same silly lifter design.
And if the lifters done fail, the 10 speed transmission will.