GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission Vent Valve Replacement 4-Door Utility and Pickup

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 388050  Size: SH
  3. Raise the vehicle.
  4. Remove the spare tire.

  5. Object Number: 10865  Size: SH
  6. Disconnect the vent solenoid electrical connector.

  7. Object Number: 10866  Size: SH
  8. Disconnect the vacuum hose.

  9. Object Number: 10867  Size: SH
  10. Bend back the tang on the bracket.

  11. Object Number: 10868  Size: SH
  12. Remove the vent solenoid.

Installation Procedure


    Object Number: 10868  Size: SH
  1. Slide the vent solenoid onto the bracket.

  2. Object Number: 10866  Size: SH
  3. Connect the vacuum hose

  4. Object Number: 10865  Size: SH
  5. Install the electrical connector.
  6. Lower the vehicle.
  7. Connect the negative battery cable.

Evaporative Emission Vent Valve Replacement 2-Door Utility

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Raise the vehicle.

  3. Object Number: 388075  Size: SH
  4. Disconnect the vent solenoid electrical connector.

  5. Object Number: 388077  Size: SH
  6. Disconnect the vacuum hose.
  7. Bend the tang back on the bracket.

  8. Object Number: 388079  Size: SH
  9. Remove the vent solenoid.

Installation Procedure


    Object Number: 388079  Size: SH
  1. Slide the vent solenoid onto the bracket.

  2. Object Number: 388077  Size: SH
  3. Connect the vacuum hose

  4. Object Number: 388075  Size: SH
  5. Install the electrical connector.
  6. Lower the vehicle.
  7. Connect the negative battery cable.