ACDelco GM Original Equipment A/C Clutch Cycle Switches are component sensors that monitor the evaporator temperature and pressure. The switch turns the compressor clutch field coil off and on. When the pressure and temperature are too low the compressor is switched off. This original equipment A/C clutch cycle switch is a GM-recommended replacement for your vehicle’s original component and has been manufactured to fit your GM vehicle providing the same performance durability and service life you expect from General Motors.