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.

Run all cylinders, all the time. The Range AFM/DFM Disabler keeps your GM V6 or V8 in full power mode, blocking Active and Dynamic Fuel Management without touching your ECU.