GM Service Manual Online
For 1990-2009 cars only

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: 238790  Size: SH
  1. Remove the EVAP canister (3). Refer to Evaporative Emission Canister Replacement .
  2. Disconnect the EVAP pressure switching solenoid electrical connector.
  3. Disconnect the three EVAP pressure switching solenoid hoses.
  4. Remove the one bolt (2).
  5. Remove the EVAP pressure switching solenoid (1) from the EVAP canister.

Installation Procedure


    Object Number: 238790  Size: SH
  1. Install the EVAP pressure switching solenoid (1) to the EVAP canister.
  2. Secure with one bolt (2).
  3. Connect the three EVAP pressure switching solenoid hoses.
  4. Connect the EVAP pressure switching solenoid electrical connector.
  5. Install the EVAP canister (3). Refer to Evaporative Emission Canister Replacement .