ACDelco GM Original Equipment Turbocharger Wastegate Solenoids are GM-recommended replacements for your vehicle's original components. They are used by the engine control module (ECM) to control engine boost pressure. These solenoid valves regulate opening of the turbocharger wastegate. These original equipment turbocharger wastegate solenoids have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.