GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Warning: Refer to Exhaust Service Warning in the Preface section.

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.


    Object Number: 1861291  Size: SH
  1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.
  2. Remove the catalytic converter to exhaust manifold nuts (1).
  3. Remove the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement.

  4. Object Number: 1861459  Size: SH
  5. Remove the catalytic converter brace bolt (2).
  6. Remove the catalytic converter from the exhaust manifold.
  7. Remove and discard the catalytic converter to exhaust manifold seal (1).

Installation Procedure


    Object Number: 1861459  Size: SH
  1. Install a NEW exhaust manifold seal (1) onto the catalytic converter.
  2. Install the catalytic converter to the exhaust manifold.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the catalytic converter brace bolt (2).
  5. Tighten
    Tighten the bolt to 41 N·m (30 lb ft).


    Object Number: 1861291  Size: SH
  6. Install the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement.
  7. Install the catalytic converter to exhaust manifold nuts (1).
  8. Tighten
    Tighten the nuts to 50 N·m (37 lb ft).

  9. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.