GM Service Manual Online
For 1990-2009 cars only

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1240438  Size: SH
  1. Install the exhaust manifold to the pup-up catalytic converter bolts.
  2. Tighten
    Tighten the exhaust manifold to the pup-up catalytic converter bolts to 50-60 N·m (36-43 lb ft).


    Object Number: 1240422  Size: SH
  3. Install the exhaust manifold with pup-up catalytic converter.
  4. Tighten
    Tighten the exhaust manifold bolts and nuts to 17-27 N·m (13-20 lb ft).


    Object Number: 1240405  Size: SH
  5. Install the exhaust pipe to the pup-up catalytic converter.
  6. Tighten
    Tighten the exhaust pipe to the pup-up catalytic converter nuts to 25-35 N·m (18-25 lb ft).


    Object Number: 1240389  Size: SH
  7. Install the exhaust manifold heat shield.
  8. Tighten
    Tighten the exhaust manifold heat shield bolts to 8-12 N·m (71-106 lb in).

  9. Connect the O2S sensor connector and ignition wire.
  10. Install snorkel assembly, resonator and filter. Refer to Air Cleaner Assembly Replacement .