GM Service Manual Online
For 1990-2009 cars only

    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: 865339  Size: SH
  5. Remove the oxygen sensor.

  6. Object Number: 746061  Size: SH
  7. Remove and discard the exhaust manifold to 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

    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: 865339  Size: SH
  5. Remove the oxygen sensor.

  6. Object Number: 746061  Size: SH
  7. Remove and discard the exhaust manifold to 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