An ACDelco GM Original Equipment Turbocharger Boost Sensor reports the intake boost pressure on turbocharged engines, and is a GM-recommended replacement for your vehicle's original component. The signal is used by the engine control module to adjust fuel delivery and timing in response to the changes in boost pressure. This original equipment turbocharger boost sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.