Compatible with Caprice 2013 ; for Colorado 2012 ; for Equinox 2011 2012 2013 ; for Malibu 2012 Material: This exhaust valve solenoid is made of a particular material that can withstand harsh operating environments and maintain optimal function at all times. Features: The main function of an automotive vacuum control valve is to measure the amount of air entering the engine. This valve controls the solenoid valve, thereby better managing intake pressure, achieving more complete fuel combustion, and ultimately improving engine efficiency. The carbon canister purge valve (CPV) is an important component of the EVAP system. It helps control emissions and seals your vehicle's fuel system to prevent harmful fuel vapors from entering the environment. It controls when and how much fuel vapor is released from the carbon canister into the intake manifold to participate in combustion in the engine, thereby reducing pollutant emissions and fuel consumption., Manufacturer: TEUIRHD-1