GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission Canister Vent Solenoid Valve Replacement Regular Cab w/26 Gal Tank

Removal Procedure

Important: Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.


    Object Number: 1855649  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove EVAP canister vent solenoid clip (1) from the chassis EVAP line.
  3. Remove the EVAP canister vent solenoid pipe from the clip (2) on the chassis EVAP line.
  4. Remove the EVAP canister vent solenoid pipe from the clips (3) on the brake pipes.
  5. Disconnect the chassis wiring harness electrical connector from the EVAP canister vent solenoid.

  6. Object Number: 1854542  Size: SH
  7. Disconnect the EVAP vent solenoid pipe quick connect fitting (3) from the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.
  8. Remove the EVAP vent solenoid pipe clip (1) from the frame crossmember.

  9. Object Number: 1854543  Size: SH
  10. Insert a small flat bladed tool between the EVAP canister vent solenoid and the fuel tank bracket, disengaging the retainer (1).
  11. Slide the EVAP canister vent solenoid off the bracket towards the passenger side of the vehicle.

  12. Object Number: 1855651  Size: SH
  13. Remove the EVAP canister vent solenoid from the vehicle.

Installation Procedure


    Object Number: 1855651  Size: SH
  1. Position and install the EVAP canister vent solenoid to the vehicle.

  2. Object Number: 1854543  Size: SH
  3. Slide the EVAP canister vent solenoid onto the bracket towards the driver side of the vehicle.
  4. Ensure that the EVAP canister vent solenoid engages the fuel tank bracket retainer (1).

  5. Object Number: 1854542  Size: SH
  6. Connect the EVAP vent solenoid pipe quick connect fitting (3) to the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.
  7. Install the EVAP vent solenoid pipe clip (1) to the frame crossmember.

  8. Object Number: 1855649  Size: SH
  9. Connect the chassis wiring harness electrical connector to the EVAP canister vent solenoid.
  10. Install EVAP canister vent solenoid clip (1) to the chassis EVAP line.
  11. Install the EVAP canister vent solenoid pipe to the clip (2) on the chassis EVAP line.
  12. Install the EVAP canister vent solenoid pipe to the clips (3) on the brake pipes.
  13. Lower the vehicle.

Evaporative Emission Canister Vent Solenoid Valve Replacement Extended Cab w/26 Gal Tank

Removal Procedure

Important: Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.


    Object Number: 1855664  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove EVAP canister vent solenoid clip (1) from the chassis EVAP line.
  3. Remove the EVAP canister vent solenoid pipe from the clip (2) on the chassis EVAP line.
  4. Remove the EVAP canister vent solenoid pipe from the clips (3) on the brake pipes.
  5. Disconnect the chassis wiring harness electrical connector from the EVAP canister vent solenoid.

  6. Object Number: 1855666  Size: SH
  7. Disconnect the EVAP vent solenoid pipe quick connect fitting (3) from the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.
  8. Disengaging the retainer (1) securing the EVAP canister vent solenoid.
  9. Slide the EVAP canister vent solenoid off the bracket towards the front of the vehicle.

  10. Object Number: 1855667  Size: SH
  11. Remove the EVAP canister vent solenoid from the vehicle.

Installation Procedure


    Object Number: 1855667  Size: SH
  1. Position and install the EVAP canister vent solenoid to the vehicle.

  2. Object Number: 1855666  Size: SH
  3. Slide the EVAP canister vent solenoid onto the bracket towards the rear of the vehicle.
  4. Ensure that the retainer (1) is engaged, securing the EVAP canister vent solenoid.
  5. Connect the EVAP vent solenoid pipe quick connect fitting (3) to the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.

  6. Object Number: 1855664  Size: SH
  7. Connect the chassis wiring harness electrical connector to the EVAP canister vent solenoid.
  8. Install EVAP canister vent solenoid clip (1) to the chassis EVAP line.
  9. Install the EVAP canister vent solenoid pipe to the clip (2) on the chassis EVAP line.
  10. Install the EVAP canister vent solenoid pipe to the clips (3) on the brake pipes.
  11. Lower the vehicle.

Evaporative Emission Canister Vent Solenoid Valve Replacement Regular Cab w/34 Gal Tank

Removal Procedure

Important: Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.


    Object Number: 1855687  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove EVAP canister vent solenoid clip (1) from the chassis EVAP line.
  3. Remove the EVAP canister vent solenoid pipe from the clip (2) on the chassis EVAP line.
  4. Remove the EVAP canister vent solenoid pipe from the clips (3) on the brake pipes.
  5. Disconnect the chassis wiring harness electrical connector from the EVAP canister vent solenoid.

  6. Object Number: 1854924  Size: SH
  7. Disconnect the EVAP vent solenoid pipe quick connect fitting (3) from the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.
  8. Remove the EVAP canister vent solenoid pipe clip (1) from the frame crossmember.

  9. Object Number: 1855688  Size: SH
  10. Disengage the retainer (1) securing the EVAP canister vent solenoid.
  11. Slide the EVAP canister vent solenoid off the bracket towards the passenger side of the vehicle.

  12. Object Number: 1855691  Size: SH
  13. Remove the EVAP canister vent solenoid from the vehicle.

Installation Procedure


    Object Number: 1855691  Size: SH
  1. Position and install the EVAP canister vent solenoid to the vehicle.

  2. Object Number: 1855688  Size: SH
  3. Slide the EVAP canister vent solenoid onto the bracket towards the driver side of the vehicle.
  4. Ensure that the retainer (1) is engaged, securing the EVAP canister vent solenoid.

  5. Object Number: 1855666  Size: SH
  6. Connect the EVAP vent solenoid pipe quick connect fitting (3) to the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service.
  7. Install the EVAP canister vent solenoid pipe clip (1) to the frame crossmember.

  8. Object Number: 1855687  Size: SH
  9. Connect the chassis wiring harness electrical connector to the EVAP canister vent solenoid.
  10. Install EVAP canister vent solenoid clip (1) to the chassis EVAP line.
  11. Install the EVAP canister vent solenoid pipe to the clip (2) on the chassis EVAP line.
  12. Install the EVAP canister vent solenoid pipe to the clips (3) on the brake pipes.
  13. Lower the vehicle.