GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 74280  Size: SH

    Caution: Provide additional support when a vehicle is on a hoist in the following ways:

       • Before removing parts, support the opposite end. This helps prevent the vehicle from slipping off.
       • Before removing major components, chain the vehicle frame to the hoist pads at the same end as the removal. This helps avoid a tip-off.
    Failure to follow these precautions could cause vehicle damage, serious personal injury, or death.

  1. Raise the vehicle.
  2. Remove the rear wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the fascia splash shield. Refer to Rear Bumper Fascia Splash Shield Replacement in Bumpers.
  4. Disconnect the purge and vapor pipes from the EVAP canister.
  5. Remove the bolt retaining the canister to the bracket.
  6. Remove the canister.
  7. Important: The hose clamp is a pinch type.

  8. Loosen the fresh air hose clamp and remove it from the EVAP canister.
  9. Remove the EVAP vent valve bracket retaining screw from the EVAP canister and remove the EVAP vent valve..

Installation Procedure

    Important: The hose clamp is a pinch type.

  1. Connect the fresh air hose to the EVAP canister and secure the hose clamp.
  2. Snap the EVAP vent valve assembly onto the EVAP canister.
  3. 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.

  4. Install the EVAP vent valve bracket retaining bolt.
  5. Tighten
    Tighten the EVAP vent valve retaining bolt to 6 N·m (53 lb in).


    Object Number: 74280  Size: SH
  6. Install the canister.
  7. Tighten the EVAP canister retaining bolt.
  8. Tighten
    Tighten the EVAP canister retaining bolt to 6 N·m (53 lb in).

  9. Connect the purge and vapor pipes to the canister. Make sure the connections are correct.
  10. Install the splash shield. Refer to Rear Bumper Fascia Splash Shield Replacement in Bumpers.
  11. Install the rear wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.