GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Disconnect the chassis purge pipe from the engine purge pipe.
  2. Plug the engine purge pipe and chassis purge pipe to prevent contamination.
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Disconnect the chassis purge pipe from the canister purge pipe.
  5. Plug the canister purge pipe and chassis purge pipe to prevent contamination.
  6. Remove the exhaust heat shield.

  7. Object Number: 102056  Size: SH
  8. Remove the fuel bundle mounting bolts from the body clips.

  9. Object Number: 102255  Size: SH
  10. Remove the chassis purge pipe from the body clips.

  11. Object Number: 49888  Size: SH
  12. Remove the chassis purge pipe (1) to be serviced.

Installation Procedure


    Object Number: 49888  Size: SH
  1. Install the chassis purge pipe and hardware (1).

  2. Object Number: 102255  Size: SH
  3. Position the chassis purge pipe in the body clips.

  4. Object Number: 102056  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the fuel bundle mounting bolts into the body clips.
  6. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  7. Install the exhaust heat shield.
  8. Tighten

        • Tighten the exhaust shield bolt to 2 N·m (18 lb in).
        • Tighten the exhaust shield nuts to 1 N·m (9 lb in).
  9. Remove the caps on the chassis purge pipe and canister purge pipe.
  10. Connect the chassis purge pipe to the canister purge pipe.
  11. Lower the vehicle.
  12. Remove the caps on the engine purge pipe and chassis purge pipe.
  13. Connect the chassis purge pipe to the engine purge pipe.