ACDelco GM Original Equipment A/C Receiver Driers are used with A/C systems that utilize a Thermostatic Expansion Valve (TXV) to control refrigerant flow. The receiver-drier acts as a storage tank for liquid refrigerant exiting the condenser. This GM Original Equipment A/C Receiver Drier is a GM-recommended replacement for your vehicle's original components and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.