GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1375630  Size: SH
  1. Replace the exhaust manifold gaskets with new ones.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the exhaust manifolds.
  4. Tighten
    Tighten the exhaust manifold retaining nits to 28 N·m (21 lb ft).


    Object Number: 1375631  Size: SH
  5. Install the exhaust manifold heat shields.
  6. Tighten
    Tighten the exhaust manifold heat shield bolts to 20 N·m (22 lb ft).

  7. Connect the oxygen sensor connectors.

  8. Object Number: 1375632  Size: SH
  9. Replace the catalytic converter gasket with a new one.
  10. Install the front exhaust pipe.
  11. Tighten
    Tighten the front exhaust pipe-to-front muffler nuts to 30 N·m (22 lb ft).


    Object Number: 1375633  Size: SH
  12. Replace the pup converter gasket with a new one.
  13. Install the front exhaust pipe nuts.
  14. Tighten
    Tighten the front exhaust pipe nuts to 40 N·m (30 lb ft).

  15. Install the front exhaust pipe lower bracket.
  16. Tighten
    Tighten the front exhaust pipe lower bracket bolts to 40 N·m (30 lb ft).

  17. Install the intake manifold. Refer to Intake Manifold Replacement .