An ACDelco GM Original Equipment Fuel Pump Driver Module is a GM-recommended replacement for your vehicle's original components, and is used on modern return-less fuel supply systems, where the fuel pump output is regulated based on engine speed and load. These modules control the voltage delivered to the vehicle's fuel pump, regulating the fuel pump's speed. This helps to maintain the optimum fuel pressure and fuel delivery to the engine throughout its full operating range. This original equipment module has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.