GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39765 Fuel Sender Lock Nut Wrench

Removal Procedure

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.


    Object Number: 14057  Size: SH
  1. Remove the fuel tank (4). Refer to Fuel Tank Replacement .
  2. Disconnect the wiring harness from the fuel sender and the fuel tank pressure (FTP) sensor.
  3. Important: 

       • The modular fuel sender assembly may spring up.
       • When removing the modular fuel sender assembly from the fuel tank, be aware that the reservoir bucket is full of fuel. The reservoir must be tipped slightly during removal to avoid damage to the float.
       • Carefully discard the reservoir fuel into an approved container.

  4. Use the J 39765 in order to press down and rotate the retaining ring (1).
  5. Remove the fuel sender assembly.

Installation Procedure


    Object Number: 14057  Size: SH
  1. Install the new seal on the fuel tank (4).
  2. Align the fuel pipes parallel with the mark on the fuel tank.
  3. Slowly apply pressure to the top of the spring loaded sender until the sender aligns flush with the retainer on tank.
  4. Important: Ensure that the retaining ring is fully seated within the tab slots.

  5. Install the retaining ring (1) using the J 39765 .
  6. Connect the wiring harness to the fuel sender and the FTP sensor.
  7. Install the fuel tank. Refer to Fuel Tank Replacement .