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 ...

We may receive a commission on purchases made from links. Imagine you could get all the brawny output of a robust V8 engine in your truck when needed, but also get improved fuel efficiency while ...

QUESTIONI'm in the process of transplanting an L77 from a 2012 Caprice 9C1 PPV [police pursuit vehicle] along with its 6L80E [six-speed, longitudinally mounted electronic automatic overdrive ...

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… ...

General Motors's Active Fuel Management (AFM) technology utilizes hydraulic valves, solenoids, and advanced software to shut down half of the cylinders in a V8 or V6 engine to save fuel. The system ...

Jasper Engines & Transmissions releases General Motors (GM) Gen IV 5.3L Class 1 engine, with an available DOD/AFM Deleted option. The remanufactured engine is available for model-year 2007-2009 ...

TOPDON USA's AFM Disabler works with many GM vehicles powered by V6 and V8 engines with Active Fuel Management (AFM) or ...

OK, so you checked off the option box for the 6L80E automatic when ordering up your new fifth-gen. Unlike your buddies in the local Camaro club that insist on shifting manually, after an evening of ...

After pulling the valve cover, we noticed a bent push rod. We replaced it and still no compression and no rocker arm movement. I guess the next step is to pull the head. Get our GM news straight to ...