GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 363245  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Caution: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

    Caution: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.

  3. Remove the nuts retaining the exhaust pipe flange to the catalytic converter pipe.

  4. Object Number: 363232  Size: SH
  5. Remove the nuts retaining the exhaust pipe flange to the muffler.
  6. Remove the exhaust pipe.
  7. Remove the both flange gaskets.

Installation Procedure


    Object Number: 363232  Size: SH
  1. Install new gaskets to the muffler flange and the catalytic converter pipe flange.
  2. Install the exhaust pipe.
  3. 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 nuts for the muffler to the exhaust pipe.

  5. Object Number: 363245  Size: SH
  6. Install the nuts for the catalytic converter pipe to exhaust pipe.
  7. Tighten
    Tighten the flange nuts to 48 N·m (35 lb ft).

    Notice: When inspecting or replacing exhaust system components, make sure there is adequate clearance from all points on the underbody to prevent overheating of the floor pan and possible damage to the passenger compartment insulation and trim materials.

  8. Verify the exhaust system for proper clearance and the alignment of all components.
  9. Lower the vehicle.