GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39765 Fuel Sender Lock Nut Wrench

Removal Procedure


    Object Number: 51674  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.

  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Clean all of the fuel pipe connections, all of the hose connections, and all of the areas surrounding the connections before disconnecting the connections in order to avoid possible contamination of the fuel system.
  3. Disconnect the quick-connect fittings at the fuel sender assembly. Refer to Plastic Collar Quick Connect Fitting Service .
  4. Use the J 39765 in order to remove the fuel sender assembly retaining ring.
  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. Remove the fuel sender assembly and the seal from the fuel tank.
  7. Discard the fuel sender assembly seal.
  8. Clean the fuel sender assembly sealing surfaces.

Installation Procedure


    Object Number: 51674  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. Position the new fuel sender assembly seal on the fuel tank.
  2. Important: Care should be taken not to fold over or twist the fuel pump strainer when installing the fuel sender assembly, as this will restrict fuel flow. Also, ensure that the fuel pump strainer does not block full travel of float arm.

  3. Install the fuel sender assembly into the fuel tank.
  4. Use the J 39765 in order to install the fuel sender assembly retaining ring.
  5. Connect the quick-connect fittings at the fuel sender assembly. Refer to Plastic Collar Quick Connect Fitting Service .
  6. Install the fuel tank. Refer to Fuel Tank Replacement .