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5.3 lifter failure replacing a failed AFM lifter and pushrod part 2

A common issue with the 5.3 engine is AFM lifter failure. In this video, we diagnose the problem and replace the failed AFM lifter and pushrod to get the engine running properly again. Follow along ...
GM Authority

Reply To: AFM Lifter collapse

We discovered that number 4 lifter on the AFM has collapsed. I have had the heads cleaned resurfaced and tested. No problems. I have ordered a AFM delete cam kit and a programmer. AFM is going away… ...
AOL

GM's AFM And DFM Often Get Blamed For Lifter Failure, So Let's Explore How They Work

The logic behind both active fuel management (AFM) and dynamic fuel management (DFM) starts with the simple observation that most drivers "carry more engine" than they need most of the time. A V8 ...
Jalopnik

Can An Active Fuel Management (AFM) Disabler Cause Engine Damage?

So, you're worried your Silverado or Sierra might run into Active Fuel Management (AFM) issues someday. But are they as bad as the internet would lead you to believe? Well, the short answer is yes.