GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39765 Fuel Sender Locknut Wrench

Removal Procedure

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

  2. Object Number: 587722  Size: SH

    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. Disconnect the fuel sender electrical connectors.
  4. Disconnect the fuel and EVAP pipes from the fuel sender.
  5. Remove the fuel sender assembly retaining ring using the J 39765 .
  6. 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.

  7. Remove the fuel sender assembly and the seal. Discard the seal.
  8. Clean the fuel sender sealing surfaces.

Installation Procedure


    Object Number: 587722  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 pump 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 pump strainer does not block full travel of the float arm.

  3. Install the fuel sender assembly into the fuel tank.
  4. Install the fuel sender assembly retaining ring using the J 39765 .
  5. Connect the fuel and EVAP pipes to the fuel sender.
  6. Connect the fuel sender electrical connectors.
  7. Install the fuel tank. Refer to Fuel Tank Replacement .