FixVault

Removal Procedure

    Fig 1: Identifying Outlet Resonator/Duct Assembly
    GM898897Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the intake air temperature (IAT) sensor connector.
  2. Loosen the clap at the air cleaner assembly.
  3. Remove the push-pin attachment from the outlet resonator/duct assembly to support the bracket.
  4. Loosen the clamp at the throttle body assembly.
  5. Disconnect the PCV fresh air vent hose at the cam cover.
  6. Remove the outlet resonator/duct assembly.
  7. Fig 2: View Of Exhaust Manifold Heat Shield
    GM951386Courtesy of GENERAL MOTORS CORP.
  8. Remove the exhaust manifold heat shield bolts.
  9. Remove the exhaust manifold heat shield.
  10. Disconnect the front and rear O2 sensor connectors. Remove the sensor if the exhaust manifold is being replaced using J 39194-C  .
  11. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  12. Fig 3: View Of Exhaust Manifold Pipe
    GM898154Courtesy of GENERAL MOTORS CORP.
  13. Remove the exhaust manifold pipe to manifold nuts.
  14. Remove the exhaust manifold pipe to resonator pipe nuts behind the converter.
  15. Disconnect the rear O2 sensor wire from the heat shield.
  16. Separate the exhaust manifold pipe and resonator pipe. Discard the gaskets.
  17. Fig 4: View Of Exhaust Manifold & Gasket
    GM746061Courtesy of GENERAL MOTORS CORP.
  18. Remove the exhaust manifold nuts.
  19. Remove the exhaust manifold assembly and discard the gasket.
  20. Fig 5: View Of Manifold Gasket
    GM949143Courtesy of GENERAL MOTORS CORP.
  21. Remove the exhaust manifold gasket and discard.