Range Technology’s AFM and Start/Stop Disablers for 2007–2013 Silverado and Sierra 1500 trucks give you full-time V8 performance with zero hassle. Prevent lifter failure, improve throttle response, and eliminate unwanted engine cycling—all with a simple plug-and-play OBD-II device that leaves no footprint and requires no tuning.

Boost MPG and save money with Range Technology AFM+. This plug-and-play module optimizes Active Fuel Management, keeping your GM truck or SUV in V4 mode up to 80% of the time without sacrificing power.