OEM 2009 Chevrolet Impala Air Inject Check Valve

2009 Chevrolet Impala Air Inject Check Valve Parts and Q&A

• Q: How to Perform an Air Inject Check Valve Replacement on 2009 Chevrolet Impala?

  A: The first step to replace the secondary air injection shutoff and check valve requires removing the exhaust crossover pipe. Detach the secondary air injection (AIR) feed tube quick connect fitting from its connection with the AIR shutoff/check valve while also removing the AIR feed tube bolt from the heater inlet/outlet pipe bracket. You should disconnect the engine wiring harness electrical connector that connects to the AIR shutoff/check valve. After supporting the vehicle properly you should take off the AIR shutoff/check valve nuts then lower the vehicle first to access and remove the AIR shutoff/check valve bolts . Remove the AIR check valve after discarding its gasket. Place a NEW gasket on the AIR pipe studs before installing the AIR check valve through positioning it correctly with subsequent tightening of the AIR shutoff/check valve bolts to 50 Nm (37 lb ft). You must raise the car while it remains supported to tighten the AIR shutoff/check valve nuts to 10 Nm (89 lb in). The engine wiring harness should be reconnected to the AIR shutoff/check valve while the vehicle remains on its lower position. Also install the AIR feed tube quick connect fitting to the AIR shutoff/check valve. Place the exhaust crossover pipe back before reattaching the heater inlet/outlet pipe bracket with the AIR feed tube bolt at 10 Nm (89 lb in).