GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 29800 Cut-Off Tool

  1. Service the front pipe and the catalytic converter as a single unit.
  2. Remove the oxygen sensor. Refer to Heated Oxygen Sensor Replacement in Engine Controls.
  3. Support the converter.

  4. Object Number: 43575  Size: SH
  5. Cut the intermediate exhaust pipes (1) at the converter with a J 29800 . Cut the pipe as close to the weld as possible.

  6. Object Number: 43538  Size: SH
  7. Remove the front pipe bolts at the exhaust manifold.
  8. Remove the converter.
  9. Remove the inlet/outlet portions that remain from the intermediate pipe/resonator.

Installation Procedure


    Object Number: 43557  Size: SH
  1. Install the converter.

  2. Object Number: 43552  Size: SH
  3. If a converter and an adjacent pipe are replaced, install a sleeve to prevent an exhaust leak.
  4. Position the intermediate pipe/resonator for proper clearance to the underbody.
  5. Install the U bolt type clamps.
  6. Tighten
    Tighten the nut to 40 N·m (30 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Install the front pipe attaching bolts.
  8. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

  9. Install the oxygen sensor. Refer to Heated Oxygen Sensor Replacement in Engine Controls.