GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

  2. Object Number: 1468454  Size: SH
  3. Unlock the quick connect fitting of the on-board refueling vapor recovery (ORVR) vent line by sliding the lock clasp (1) to unlock position.
  4. Disconnect the ORVR vent line (3) from the evaporative emission (EVAP) canister port (2).

  5. Object Number: 1468453  Size: SH
  6. Disconnect the EVAP canister air inlet line (1) from the vent pipe (2) by pinching both sides of the hose connector.

  7. Object Number: 1459178  Size: SH
  8. Disconnect the EVAP purge hose (1) from the EVAP canister (3).
  9. Disconnect the electrical connector (4) from the EVAP canister vacuum pump assembly.
  10. Remove the 3 bolts and the EVAP canister (3) from the vehicle.
  11. Inspect the EVAP purge system for carbon particle contamination before replacing the EVAP canister.

Installation Procedure


    Object Number: 1459178  Size: SH
  1. Install the EVAP canister (3) to the vehicle underbody and secure with 3 bolts.
  2. 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.

  3. Tighten the EVAP canister bracket support bolts.
  4. Tighten
    Tighten the bolts to 19 N·m (14 lb ft).

  5. Connect the EVAP purge hose (1) to the EVAP canister (3).
  6. Connect the electrical connector (4) to the EVAP canister vacuum pump.
  7. Connect the ORVR vent line (2) to the EVAP canister (3).
  8. Slide the locking clasp of the quick connect fitting into the lock position on the ORVR vent line

  9. Object Number: 1468453  Size: SH
  10. Connect the EVAP canister air inlet line (1) to the vent pipe (2).
  11. Lower the vehicle.