ACDelco GM Original Equipment Multi-Purpose Temperature Sensors are GM-recommended replacements for your vehicle's original components. It senses the temperature of various liquids for a variety of components including radiator cooling fans, temperature gauges, and warning indicators. Typically, the temperature sensor sends a signal to the control module and the control module then controls the on/off function of another component. These original equipment multi-purpose temperature sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.