GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: 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. Notice: 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. Support and lower the rear crossmember. All wheel drive (AWD) models refer to Crossmember Replacement .
  9. 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. Install rear crossmember. AWD models refer to Crossmember Replacement .

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

  7. Install the catalytic converter to muffler nuts.
  8. Tighten
    Tighten the nuts to 34 N·m (25 lb ft).

  9. Lower the vehicle.