GM Genuine Parts Fuel Pump Driver Modules are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These modules help control the voltage delivered to your vehicleÆs fuel pump, helping to regulate the fuel pumpÆs speed. These modules also help maintain optimum fuel pressure, and fuel delivery to your vehicleÆs engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).