GM Service Manual Online
For 1990-2009 cars only

Intermediate Pipe Replacement 2.2L

Removal Procedure

    Notice: Do not over-flex or damage the flex joint when moving the flex joint from the normal mounting position.

    Important: A service muffler will be needed when replacing the intermediate pipe on an originally equipped, welded system.

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the three-way catalytic converter.

  3. Object Number: 25822  Size: SH
  4. Cut the intermediate pipe at the muffler.

  5. Object Number: 25258  Size: SH
  6. Remove the intermediate pipe from the three-way catalytic converter.

  7. Object Number: 25293  Size: SH
  8. Remove the intermediate pipe from the hanger.
  9. Remove the intermediate pipe.

  10. Object Number: 107551  Size: SH
  11. Remove the muffler from the hangers.

  12. Object Number: 72278  Size: SH
  13. Remove the three-way catalytic converter seals.
  14. Clean the flange surface.

Installation Procedure


    Object Number: 72278  Size: SH
  1. Install the three-way catalytic converter seals.

  2. Object Number: 25293  Size: SH
  3. Install the intermediate pipe to the hanger.

  4. Object Number: 25258  Size: SH
  5. Install the intermediate pipe to the three-way catalytic converter.

  6. Object Number: 107551  Size: SH
  7. Install the muffler to the hangers.

  8. Object Number: 25822  Size: SH
  9. Weld the muffler to the intermediate pipe.
  10. Lower the vehicle.

Intermediate Pipe Replacement 2.4L

Removal Procedure

    Notice: Do not over-flex or damage the flex joint when moving the flex joint from the normal mounting position.

    Important: A service muffler will be needed when replacing the intermediate pipe on an originally equipped, welded system.

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the three-way catalytic converter.

  3. Object Number: 25822  Size: SH
  4. Cut the intermediate pipe at the muffler.

  5. Object Number: 25271  Size: SH
  6. Remove the intermediate pipe from the three-way catalytic converter.

  7. Object Number: 25293  Size: SH
  8. Remove the intermediate pipe from the hanger.
  9. Remove the intermediate pipe.

  10. Object Number: 107551  Size: SH
  11. Remove the muffler from the hanger.

  12. Object Number: 25299  Size: SH
  13. Remove the three-way catalytic converter seal.
  14. Clean the flange surface.

Installation Procedure


    Object Number: 25299  Size: SH
  1. Install the three-way catalytic converter seal.

  2. Object Number: 25293  Size: SH
  3. Install the intermediate pipe to the hanger.

  4. Object Number: 25271  Size: SH
  5. Install the intermediate pipe to the three-way catalytic converter.

  6. Object Number: 107550  Size: SH
  7. Install the muffler to the hangers.

  8. Object Number: 25822  Size: SH
  9. Weld the muffler to the intermediate pipe.
  10. Lower the vehicle.