Active Fuel Management lifter collapse
ENGINE
13 NHTSA complaints · 2023-06 → 2026-04
“My 2017 Cadillac Escalade has experienced a critical engine malfunction specifically related to the Active Fuel Management (AFM) lifter system. The lifters are causing multiple engine misfires. This issue directly matches the manufacturer-acknowledged problem detailed in GM”
“Engine misfire, AFM lifter collapse, defective AFM/DOD lifter technology. The three diagnosis I have had done to check for multiple opinions have all come back the same with a collapsed AFM lifter causing camshaft damage, overall failure of an AFM/DOD deactiviating lifter in the”
“The engine is a 8 cylinder 6.2 liter. It starts out using 8 cylinders and progressively drops to 4 at highway speeds. The lifter failed, seized and gouged and ruined the block and camshaft. This preventable repair necessitated an entirely new engine. This happens to thousands of”