Range Technology RA002 V4 Fuel Economy Module - AFM Plus

Range Fuel Economy Module (AFM) Plus works with your factory installed AFM allowing your vehicle to drive in V4 (4-cylinder) mode up to 80% of the time.;

Save fuel by allowing your engine to stay in the 4-cylinder mode up to 80% of the time. Active Fuel Management, available on most GM trucks and SUVs, helps lower fuel costs by enabling V8 engines to behave like four-cylinder engines when cruising with light loads, to save fuel.;