An ACDelco GM Original Equipment Exhaust Temperature Sensor reports the exhaust gas temperature to the engine control module, and is a GM-recommended replacement for your vehicle's original component. The temperature signal is used by the control module to adjust fuel delivery and boost pressure to protect the exhaust after-treatment components from overheating and keep them operating efficiently. This original equipment exhaust temperature sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.