GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement Dual

Removal Procedure

The muffler is serviced as a complete assembly and cannot be serviced separately.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General information.
  2. Support the exhaust system.
  3. Remove the catalytic converter from the muffler. Refer to Catalytic Converter Replacement .

  4. Object Number: 460738  Size: SH
  5. Remove the muffler from the exhaust hangers.
  6. Clean the catalytic converter and the muffler gasket mating surfaces.

Installation Procedure


    Object Number: 460738  Size: SH
  1. Install the muffler to the exhaust hangers.
  2. Support the exhaust system.
  3. Install a new gasket to the catalytic converter and the muffler.
  4. Install the catalytic converter to the muffler. Refer to Catalytic Converter Replacement .
  5. Remove the exhaust system support.
  6. Lower the vehicle.
  7. Inspect for exhaust leaks.

Exhaust Muffler Replacement Single

Removal Procedure

The muffler is serviced as a complete assembly and cannot be serviced separately.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General information.
  2. Support the exhaust system.
  3. Remove the catalytic converter from the muffler. Refer to Catalytic Converter Replacement .

  4. Object Number: 289492  Size: SH
  5. Remove the exhaust system from the exhaust hangers.
  6. Clean the catalytic converter and the muffler gasket mating surfaces.

Installation Procedure


    Object Number: 289492  Size: SH
  1. Install the muffler to the exhaust hangers.
  2. Support the exhaust system.
  3. Install a new gasket to the catalytic converter and the muffler.
  4. Install the catalytic converter to the muffler. Refer to Catalytic Converter Replacement .
  5. Remove the exhaust system support.
  6. Lower the vehicle.
  7. Inspect for exhaust leaks.