GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1578477  Size: SH
  1. Disconnect the engine wiring harness electrical connector from the evaporative emission (EVAP) canister purge solenoid.

  2. Object Number: 1773469  Size: SH
  3. Disconnect the EVAP canister purge valve tube quick connect fitting from the purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service .

  4. Object Number: 1773498  Size: SH
  5. Disconnect the chassis EVAP pipe quick connect fitting (3) from the purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service .

  6. Object Number: 1792716  Size: SH
  7. Remove the EVAP canister purge solenoid valve bracket bolt.
  8. Remove the EVAP canister purge solenoid valve and bracket.

  9. Object Number: 1792724  Size: SH
  10. Insert a small flat-bladed tool between the valve and the bracket in order to release the depress the tab (1) securing the valve to the bracket.
  11. Inspect for carbon release in the EVAP canister purge solenoid valve ports. If there is any loose carbon, replace the EVAP canister and any components necessary to remove the carbon particles.

Installation Procedure


    Object Number: 1792724  Size: SH
  1. Install the EVAP canister purge solenoid valve onto the bracket until the tab (1) engages the valve. It may be necessary to bend the tab up slightly in order for the tab to engage the valve.

  2. Object Number: 1792716  Size: SH
  3. Position the EVAP canister purge solenoid valve and bracket to the cylinder head.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the EVAP canister purge solenoid valve bracket bolt.
  6. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1773498  Size: SH
  7. Connect the chassis EVAP pipe quick connect fitting (3) to the purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service .

  8. Object Number: 1773469  Size: SH
  9. Connect the EVAP canister purge valve tube quick connect fitting to the purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service .

  10. Object Number: 1578477  Size: SH
  11. Connect the engine wiring harness electrical connector to the EVAP canister purge solenoid.