GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the fuel tank. Refer to Fuel Tank Replacement .

  2. Object Number: 479568  Size: SH
  3. Remove the vapor hose from the fuel cut-off valve.
  4. Remove the 3 screws (3) from the fuel cut-off valve (1).
  5. Remove the fuel cut-off valve (1) and the gasket (2) from the fuel tank.

Installation Procedure


    Object Number: 479568  Size: SH
  1. Install the fuel cut-off valve (1) and the gasket (2) to the fuel tank.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Secure the fuel cut-off valve (1) to the fuel tank with the 3 screws (3).
  4. Tighten
    Tighten the screws to 3.5 N·m (30 lb in).

  5. Connect the vapor hose to the fuel cut-off valve.
  6. Install the fuel tank. Refer to Fuel Tank Replacement .