GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1252166  Size: SH
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the exhaust manifold retaining nuts and tighten in the sequence shown.
  5. Tighten
    Tighten the exhaust manifold retaining nuts 22 N·m (16 lb ft).


    Object Number: 1252162  Size: SH
  6. Install the auxiliary catalytic converter upper flange nuts.
  7. Tighten
    Tighten the auxiliary catalytic converter-to-exhaust manifold nuts to 40 N·m (30 lb ft).


    Object Number: 1252124  Size: SH
  8. Install the exhaust manifold heat shield.
  9. Install the exhaust manifold heat shield bolts.
  10. Tighten
    Tighten the exhaust manifold heat shield bolts to 8 N·m (71 lb in).

  11. Connect the oxygen sensor connector, if equipped.
  12. Connect the negative battery.