GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement Service Part

Tools Required

SA9168NE Exhaust and Tailpipe Cutter

Removal Procedure

    Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 927857  Size: SH
  3. Obtain a piece of (non-stretchable) string 18 ½ inches long. Starting from the muffler, place the string along the pipe. Mark the end of the string on the pipe.
  4. Notice: Always use a chain cutter to cut the stainless steel pipe. A torch leaves a rough edge and may warp the pipe.

  5. Using a SA9168NE (or equivalent) cut the pipe on the mark.

  6. Object Number: 926862  Size: SH
  7. Separate the muffler and tailpipe.
  8. Remove the muffler and tailpipe.

Installation Procedure

Important: The service resonator pipe is designed to attach to either the production or service muffler assembly.


    Object Number: 926862  Size: SH
  1. Deburr the pipe ends as necessary.

  2. Object Number: 926862  Size: SH
  3. Position the service muffler and tailpipe assembly onto the intermediate pipe.
  4. Install the rubber isolator to mount hanger.
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 927058  Size: SH
  6. Install the service clamp and tighten
  7. Tighten
    Tighten the rear muffler pipe service clamp to 45 N·m (33 lb ft).

Exhaust Muffler Replacement Production Assembly

Removal Procedure

    Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

    Important: The muffler and resonator is not available as a complete assembly. Separate resonator and muffler assemblies are available as service parts.

  1. Hoist the vehicle.

  2. Object Number: 926819  Size: SH
  3. Remove the rear exhaust pipe flange to intermediate pipe nuts.

  4. Object Number: 926831  Size: SH
  5. Separate the hangers from rubber isolators.
  6. Remove the muffler and pipe assembly.

Installation Procedure


    Object Number: 926831  Size: SH
  1. Position the muffler and resonator assembly to the vehicle and install into the rubber mounts.

  2. Object Number: 926819  Size: SH
  3. Install the new gasket onto the exhaust pipe rear flange.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Assemble the intermediate pipe to exhaust pipe, install new nuts and tighten.
  6. Tighten
    Tighten the exhaust pipe-to-intermediate pipe nuts to 30 N·m (22 lb ft).

  7. Check the entire exhaust system for leaks.