GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement Right Side

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Notice: Refer to Catalytic Converter Movement Notice in the Preface section.


    Object Number: 25822  Size: SH
  3. Suitably support the exhaust system.
  4. Cut the exhaust pipe (1) as close as is possible to the muffler weld (2).

  5. Object Number: 623846  Size: SH
  6. Disconnect the exhaust muffler rear hanger insulators from the exhaust muffler.
  7. Remove the exhaust muffler.

Installation Procedure


    Object Number: 623846  Size: SH
  1. Connect the exhaust muffler to the exhaust muffler rear hanger insulators.

  2. Object Number: 33038  Size: SH

    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.

  3. Install the exhaust muffler to the exhaust pipe.
  4. Tighten
    Tighten the exhaust muffler inlet pipe clamp nuts to 50 N·m (37 lb ft).

  5. Remove the support from the exhaust system.
  6. Inspect the exhaust system for leaks and underbody contact.
  7. Lower the vehicle.

Exhaust Muffler Replacement Dual - Left Side

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Notice: Refer to Catalytic Converter Movement Notice in the Preface section.

  3. Suitably support the exhaust system.

  4. Object Number: 33031  Size: SH

    Important: The cut(s) must be made on the straight pipe closest to the curve coming out of the left-side exhaust muffler (2). Do not cut on the curve or bend.

  5. Cut the exhaust pipe closest to the left-hand exhaust muffler bend (1).

  6. Object Number: 623846  Size: SH
  7. Disconnect the exhaust muffler rear hanger insulators from the exhaust muffler.
  8. Remove the exhaust muffler.

Installation Procedure


    Object Number: 623846  Size: SH
  1. Install the exhaust muffler.
  2. Connect the exhaust muffler rear hanger insulators to the exhaust muffler.

  3. Object Number: 33038  Size: SH

    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.

  4. Install the exhaust muffler to the exhaust pipe.
  5. Tighten
    Tighten the exhaust muffler inlet pipe clamp nuts to 50 N·m (37 lb ft).

  6. Inspect the exhaust system for leaks and underbody contact.
  7. Remove the support from the exhaust system.
  8. Lower the vehicle.