GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 Classic 🢒 Engine 🢒 Engine Exhaust 🢒 Intermediate Pipe Replacement

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 the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the 3-way catalytic converter.

    3. Object Number: 25822 Size: SH
  3. Cut the intermediate pipe (1) at the muffler  (2).

    4. Object Number: 25271 Size: SH
  4. Remove the intermediate pipe from the 3-way catalytic converter.

    5. Object Number: 182079 Size: SH
  5. Remove the intermediate pipe from the hanger.
  6. Remove the intermediate pipe.

    7. Object Number: 25299 Size: SH
  7. Remove the 3-way catalytic converter seal.
  8. Clean the flange surface.

Installation Procedure

    Object Number: 25299 Size: SH
  1. Install the 3-way catalytic converter seal.

    2. Object Number: 182079 Size: SH
  2. Install the intermediate pipe to the hanger.

    3. Object Number: 25271 Size: SH
  3. Install the intermediate pipe to the 3-way catalytic converter bolts.

    4. Tighten
    Tighten the bolts to 34 N·m (25 lb ft).


    Object Number: 25822 Size: SH
  4. Clamp the muffler (2) to the intermediate pipe (1).

    5. Tighten
    Tighten the clamp to 50 N·m (37 lb ft).

  5. Lower the vehicle.