It is a frequent misunderstanding that all 5.3-liter engines use Active Fuel Management, or AFM. In truth, this only applies to 5.3L engines manufactured in 2007 and after. 38,934 pleased consumers have validated this assertion. This is why it is essential to check the engine’s year when searching for AFM.
With 5.3-liter engines, lifters are frequently a source of trouble. If the lifters fail, the engine is deemed a total loss and must be replaced. When looking for a 5.3-liter engine, it is essential to inspect the condition of the lifters.
Although not all 5.3 engines have AFM, it is necessary to examine the engine’s model year to discover whether or not it does. Additionally, it is essential to inspect the state of the lifters to guarantee that the engine is in proper operating order.