An ACDelco GM Original Equipment Throttle Position (TPS) Sensor is an electrical sensor, and is a GM-recommended replacement for your vehicle's original component. It electronically informs the engine management computer of the throttle's plate angle or position. The signals are then used to regulate the fuel and ignition system. This original equipment throttle position sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.