GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Note: The muffler is serviced as one piece from the catalytic converter to the tail pipe.


    Object Number: 1681430  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Caution: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.

  3. Use a utility stand in order to support the catalytic converter.
  4. Remove the catalytic converter to muffler nuts.
  5. Remove the catalytic converter to muffler gasket.

  6. Object Number: 260060  Size: SH
  7. Remove the exhaust hanger insulators from the exhaust pipe.
  8. Remove the muffler assembly towards the front of the vehicle and over the rear axle.

Installation Procedure


    Object Number: 260060  Size: SH
  1. Install the muffler assembly over the rear axle and towards the rear of the vehicle.
  2. Install the exhaust hanger insulators to the exhaust pipes.

  3. Object Number: 1681430  Size: SH
  4. Install a new catalytic converter gasket.
  5. Caution: Refer to Fastener Caution in the Preface section.

  6. Install the catalytic converter to muffler nuts and tighten to 34 N·m (25 lb ft) .
  7. Lower the vehicle.