GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1890093  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  2. Remove the generator battery control module cover, if necessary. Refer to Generator Control Module Cover Replacement.
  3. Disconnect the engine wiring harness electrical connector (1) from the evaporative emission (EVAP) canister purge solenoid valve (2).

  4. Object Number: 1889920  Size: SH
  5. Disconnect the chassis EVAP line quick connect fitting (2) from the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.

  6. Object Number: 1889722  Size: SH
  7. Disconnect the engine EVAP line (1) quick connect fitting from the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.

  8. Object Number: 1578478  Size: SH
  9. Remove the EVAP canister purge valve bracket bolt.
  10. Remove the EVAP canister purge valve with bracket.
  11. Remove the EVAP canister purge valve from the bracket.
  12. Inspect for carbon release in the EVAP canister purge 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: 1578478  Size: SH
  1. Install the EVAP canister purge valve to the bracket.
  2. Position the EVAP canister purge valve with bracket to the cylinder head.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the EVAP canister purge valve bracket bolt and tighten to 25 N·m (18 lb ft).

  5. Object Number: 1889722  Size: SH
  6. Connect the engine EVAP line (1) quick connect fitting to the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.

  7. Object Number: 1889920  Size: SH
  8. Connect the chassis EVAP line quick connect fitting (2) to the EVAP canister purge solenoid valve. Refer to Plastic Collar Quick Connect Fitting Service.

  9. Object Number: 1890093  Size: SH
  10. Connect the engine wiring harness electrical connector (1) to the EVAP canister purge solenoid valve (2).
  11. Install the generator battery control module cover, if necessary. Refer to Generator Control Module Cover Replacement.
  12. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.