GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Removal LS


    Object Number: 675361  Size: SH
  1. Remove the air pipe nut (1).
  2. Remove the air pipe bolts (3).
  3. Remove the air pipe (2).
  4. Remove the air pipe gasket (4).

  5. Object Number: 412123  Size: SH
  6. Remove the exhaust manifold heat shield.

  7. Object Number: 825111  Size: SH
  8. Remove the block heater if equipped.

  9. Object Number: 412121  Size: SH
  10. Remove the oxygen sensor.

  11. Object Number: 412125  Size: SH
  12. Remove the exhaust manifold to the cylinder head retaining nuts.
  13. Remove the exhaust manifold.
  14. Clean all of the sealing surfaces.
  15. If the exhaust manifold is being replaced, transfer the following parts:
  16. • The exhaust manifold heat shield
    • The oxygen sensor
    • Replace the exhaust manifold nuts

Exhaust Manifold Removal SUV, Opel J/T


    Object Number: 746055  Size: SH
  1. Remove the exhaust manifold heat shield.

  2. Object Number: 825111  Size: SH
  3. Remove the block heater if equipped.

  4. Object Number: 412121  Size: SH
  5. Remove the oxygen sensor.

  6. Object Number: 746061  Size: SH
  7. Remove the exhaust manifold to the cylinder head retaining nuts.
  8. Remove the exhaust manifold.
  9. Clean all of the sealing surfaces.
  10. If the exhaust manifold is being replaced, transfer the following parts:
  11. • The exhaust manifold heat shield
    • The oxygen sensor
    • Replace the exhaust manifold nuts