GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 384186  Size: SH
  1. Relieve the CNG fuel system pressure. Refer to Fuel Pressure Relief .
  2. 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.

  3. Disconnect the negative battery cable.
  4. Remove the fill valve access cover. Refer to Fill Valve Access Cover Replacement .
  5. Remove the fill valve. Refer to Fill Valve Replacement .
  6. Drill out the rivets from the fill valve mounting cup.
  7. Carefully pry the fill valve mounting cup from the body.
  8. Remove the gaskets and the adhesive from the body.

Installation Procedure


    Object Number: 384186  Size: SH
  1. Install a new gasket and adhesive to the body.
  2. Install the fill valve mounting cup.
  3. Install the rivets.
  4. Install the fill valve. Refer to Fill Valve Replacement .
  5. Install the fill valve access cover. Refer to Fill Valve Access Cover Replacement .