GM Service Manual Online
For 1990-2009 cars only

Tool Required

J 39765 Fuel Sender Lock Nut Wrench

Removal Procedure


    Object Number: 331709  Size: SH
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Notice: Do Not handle the fuel sender assembly by the fuel pipes. The amount of leverage generated by handling the fuel pipes could damage the joints.

  3. Remove the retaining ring from the fuel sender assembly using the J 39765 fuel sender lock nut wrench.
  4. Remove the fuel sender assembly and the seal. Discard the seal.
  5. Caution: Drain the fuel from the fuel sender assembly into an approved container in order to reduce the risk of fire and personal injury. Never store the fuel in an open container.

  6. Clean the fuel sender sealing surfaces.

Installation Procedure


    Object Number: 331709  Size: SH

    Caution: In order to reduce the risk of fire and personal injury that may result from a fuel leak, always replace the fuel sender gasket when reinstalling the fuel sender assembly.

  1. Install the new seal on the fuel tank.
  2. Important: The fuel strainer must be in a horizontal position when the fuel sender is installed in the tank. When installing the fuel sender assembly, assure that the fuel strainer does not block full travel of the float arm.

  3. Install the fuel sender assembly into the fuel tank.
  4. 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.

  5. Install the retaining ring to the fuel sender assembly using the J 39765 .
  6. Install the fuel tank. Refer to Fuel Tank Replacement .