GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1636801  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the evaporative emission (EVAP) canister vent solenoid valve electrical connector (2).
  3. Clean any dirt or debris that may be present around the EVAP canister vent valve.

  4. Object Number: 1636704  Size: SH
  5. Disconnect the fresh air tube quick connect fitting (3) from the EVAP vent solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.

  6. Object Number: 1637874  Size: SH
  7. Disengage the retainer attaching the EVAP vent solenoid valve to the canister.
  8. Remove the vent solenoid valve from the EVAP canister.

Installation Procedure


    Object Number: 1637874  Size: SH
  1. Install the vent solenoid valve to the EVAP canister.
  2. Ensure that the retainer attaching the EVAP vent solenoid valve to the canister is engaged.

  3. Object Number: 1636704  Size: SH
  4. Connect the fresh air tube quick connect fitting (3) to the EVAP vent solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.

  5. Object Number: 1636801  Size: SH
  6. Connect the EVAP canister vent solenoid valve electrical connector (2).
  7. Lower the vehicle.