GM Service Manual Online
For 1990-2009 cars only

Exhaust Pipe Replacement W/ Converter

Removal Procedure

  1. Raise and support the vehicle. Refer to General Information.

  2. Object Number: 73504  Size: SH
  3. Remove the catalytic converter to the muffler clamp.
  4. Remove the front exhaust pipe to exhaust manifold retaining bolts and springs.

  5. Object Number: 73505  Size: SH
  6. Remove the catalytic converter flange retaining bolts to hanger.

  7. Object Number: 73506  Size: SH
  8. Remove the front exhaust pipe/converter from the vehicle.

Installation Procedure

Notice: In order to prevent overheating of the floor panel or damage to the passenger compartment, insulation, and trim materials, check the underbody for adequate clearance when inspecting or replacing the exhaust system components.


    Object Number: 73506  Size: SH
  1. Position the front exhaust pipe and the converter to exhaust manifold and insert the converter outlet to muffler.

  2. Object Number: 73505  Size: SH
  3. Install the catalytic converter flange to the hanger bolts.
  4. Tighten
    Tighten the bolts to 47 N·m (35 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.

  5. Install the front exhaust pipe to exhaust manifold bolt and springs.
  6. Tighten
    Tighten the bolts to 30 N·m (22 lb ft).


    Object Number: 73504  Size: SH
  7. Install the catalytic converter to the muffler clamp.
  8. Tighten
    Tighten the clamp bolt to 68 N·m (50 lb ft).

  9. Lower the vehicle.