GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission Pressure Switching Solenoid Replacement AWD

Removal Procedure

Notice: The EVAP canister may have released carbon particles which caused this part to fail and may cause damage to other components. Check the EVAP canister for loose carbon before returning the vehicle to service.


    Object Number: 625291  Size: SH
  1. Remove the EVAP canister (3). Refer to Evaporative Emission Canister Replacement .
  2. Disconnect the electrical connector of the EVAP pressure switching solenoid.
  3. Disconnect the 2 vapor hoses.
  4. Remove the fastener (2).
  5. Remove the EVAP pressure switching solenoid (1) from the EVAP canister.
  6. Inspect the EVAP pressure switching solenoid and the EVAP control system for carbon particle contamination before replacing the EVAP pressure switching solenoid.

Installation Procedure

  1. Inspect the EVAP pressure switching solenoid and the EVAP control system for carbon particle contamination before replacing the EVAP pressure switching solenoid.

  2. Object Number: 625291  Size: SH
  3. Install the EVAP pressure switching solenoid (1) to the EVAP canister.
  4. 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. Secure the solenoid with the fastener (2).
  6. Tighten
    Tighten the fastener to 8.8 N·m (77 lb in).

  7. Connect the 2 vapor hoses.
  8. Connect the electrical connector.
  9. Install the EVAP canister (3). Refer to Evaporative Emission Canister Replacement .