GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The originally equipped, welded exhaust extension pipe can be cut and reused when installing a service muffler, if the extension pipe is in acceptable condition.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the exhaust muffler.

  3. Object Number: 1546675  Size: SH
  4. Cut the exhaust extension pipe just forward of the weld at the front of the exhaust muffler.
  5. Release the muffler from the underbody hanger insulators and remove the exhaust muffler.
  6. Deburr the extension pipe end, as necessary.

Installation Procedure


    Object Number: 1546675  Size: SH
  1. Install the muffler to the vehicle.
  2. Slide the muffler inlet pipe over the extension pipe, then install the muffler to the underbody hanger insulators.
  3. Install a muffler clamp to the muffler inlet pipe. Position the clamp approximately 19 mm (¾ in) from the edge of the muffler inlet, with the clamp nuts oriented away from the evaporative emission (EVAP) canister.
  4. Align the muffler and tailpipe to the vehicle underbody and rear bumper fascia.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. While maintaining muffler positioning, tighten the exhaust clamp nuts.
  7. Tighten
    Tighten the nuts to 45 N·m (33 lb ft).

  8. Lower the vehicle.