GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Removal - Right Side F Car


    Object Number: 346029  Size: SH

    Important: Do not remove the check valve from the Air Injection Reaction (AIR) pipe unless service is required.

  1. Remove the AIR pipe, with check valve, bolts, and gasket from the right exhaust manifold.
  2. Remove the spark plug wires from the spark plugs.
  3. Do not remove the spark plug wires from the ignition coils unless required.


    Object Number: 639818  Size: SH

    Important: Do not remove the oxygen sensor from the manifold unless service is required.

  4. Remove the oxygen sensor from the manifold.
  5. Remove the exhaust manifold, bolts, and gasket.
  6. Discard the gasket.

  7. Object Number: 639819  Size: SH
  8. Remove the heat shield (2) and bolts (3) from the manifold (1), if required.

Exhaust Manifold Removal - Right Side Y Car


    Object Number: 63229  Size: SH

    Important: Do not remove the check valve from the Air Injection Reaction (AIR) pipe unless service is required.

    Do not remove the oxygen sensor from the exhaust manifold unless service is required.

  1. Remove the AIR pipe bracket bolt from the rear of the left cylinder head.

  2. Object Number: 363591  Size: SH
  3. Remove the AIR pipe, with check valve, bolts, and gasket from the right exhaust manifold.

  4. Object Number: 639833  Size: SH
  5. Remove the spark plug wires from the spark plugs.
  6. Do not remove the spark plug wires from the ignition coils unless required.

  7. Remove the oxygen sensor from the manifold.
  8. Remove the exhaust manifold, bolts, and gasket.
  9. Discard the gasket.
  10. Remove the heat shield and bolts, if required.