OEM 2003 Cadillac DeVille Air Inject Check Valve

2003 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to replace the Air Inject Check Valve for Bank 1 on 2003 Cadillac DeVille?

  A: The procedure starts with elevating a vehicle before proceeding with the replacement of the bank 1 secondary air injection (AIR) shut-off valve. Start by lifting the vehicle before removing its two outlet pipe securing nuts from the Exhaust Manifold. The first step in replacing the bank 1 air shut-off valve requires disconnection of the bank 1 intermediate pipe/hose followed by vacuum line removal. You must remove three bolts securing the air shut-off valve onto the engine after you disconnect the valve from the bank 1 air outlet pipe. Correctly position the bank 1 air outlet pipe alongside its new gasket and bolt it securely to the engine block while using torque to 9 n.m (80 lb in). Reinstall the vacuum lines before connecting the bank 1 air intermediate pipe/hose with clamp to the bank 1 air shut-off valve followed by vehicle lift. Lower the vehicle and use two nuts to fasten the bank 1 air outlet pipe onto the Exhaust Manifold while securing them at 9 n.m (80 lb in).