GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

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

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 1313621  Size: SH
  3. Remove the 3 nuts attaching the catalytic converter to the exhaust manifold.
  4. Position the exhaust system rearward, enough to allow clearance to remove the seal.

  5. Object Number: 1313620  Size: SH
  6. Remove the exhaust manifold seal from the exhaust manifold flange. Discard the seal.

Installation Procedure


    Object Number: 1313620  Size: SH
  1. Install the NEW seal to the exhaust manifold flange.

  2. Object Number: 1313621  Size: SH
  3. Position the catalytic converter to the exhaust manifold.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the 3 nuts attaching the catalytic converter to the exhaust manifold.
  6. Tighten
    Tighten the catalytic converter nuts to 50 N·m (37 lb ft).

  7. Lower the vehicle.