Remember that using an AFM disabler will not resolve problems with bad lifters or faulty camshafts. On the contrary, forcing the engine to run in all-cylinder mode when it has camshaft issues will ...

The problem is that—at least when initially introduced—the AFM-specific valve lifters had some issues, so chances are the reason you'd want to get rid of the AFM on a stocker is because of an ...

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.

The two problems were so pervasive that GM ... out that even though the 5.3-liter LC9 engines with AFM were known to suffer from lifter failures, the newer EcoTec3 engines with Dynamic Fuel ...

The good news is that it’s possible to eliminate all traces of DOD/AFM ... lifters pump back up, and normal operation resumes. While it’s an interesting system, it brings a variety of problems.

Afm is a disaster!. Was using quart of oil ... Wouldn’t trade! ! Terrible engine problems lifter broke at 127,000 miles. Had to replace engine. Always used a quart of oil every 2000 miles.

Short-block problems are similar to the LS3. AFM problems (450 hp, 0.500-inch-lift cams, or high rpm):Half the lifters and their corresponding cam lobes are unique. Comp and LPE offer AFM-style ...