GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39765 Fuel Sender Lock Nut Wrench

Removal Procedure

Caution: Refer to Gasoline/Gasoline Vapors Caution in the Preface section.

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: 1747414  Size: SH
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Disconnect the fuel tank harness electrical connector from the fuel pump module.
  3. Remove the fuel tank harness from the retaining features on the fuel tank and remove the harness.

  4. Object Number: 1747415  Size: SH
  5. Remove the fuel feed and return lines from the retaining features (1) on the fuel tank.
  6. Using the J 39765 , unlock the fuel pump module lock ring (2).

  7. Object Number: 1747416  Size: SH
  8. Slowly lift the fuel pump module (2) up until the fuel level sensor float arm is just visible. Ensure that the fuel level sensor harness connector clears the tank opening.
  9. Important: When removing the fuel pump module from the fuel tank, be aware that the pump module reservoir bowl is full of fuel. The reservoir must be tipped slightly during removal to avoid bending the fuel level sensor float arm.

  10. Tilt the fuel pump module (2) toward the front of the fuel tank to enable the level sensor float arm to clear the tank opening. Remove the pump module (2) from the tank.
  11. Remove the fuel pump module lock ring (1).
  12. Discard the fuel in the pump module reservoir bowl into an approved fuel container.
  13. Important: Do NOT reuse the old fuel pump module-to-fuel tank seal.

  14. Remove and discard the fuel pump module seal (3).

Installation Procedure


    Object Number: 1747416  Size: SH
  1. Position a NEW fuel pump module seal (3) onto the fuel tank.
  2. Install the fuel pump module lock ring (1) over the module feed and return lines and into position on top of the module.
  3. Important: The reservoir must be tipped slightly during installation to avoid bending the fuel level sensor float arm.

  4. Tilt the fuel pump module (2) toward the front of the fuel tank to enable the level sensor float arm to clear the tank opening. Install the fuel pump module (2) to the fuel tank.
  5. Slowly lower the fuel pump module (2) into the tank. Ensure that the fuel lines align with the cut outs in the tank.

  6. Object Number: 1747415  Size: SH

    Important: Ensure that the fuel pump module lock ring is fully seated within the fuel tank retaining tab slots.

  7. Using the J 39765 , secure the fuel pump module lock ring (2).
  8. Secure the fuel feed and return lines to the retaining features (1) on the fuel tank.

  9. Object Number: 1747414  Size: SH
  10. Position the fuel tank harness and connect the fuel tank harness electrical connector to the fuel pump module.
  11. Install the fuel tank harness to the retaining features on the fuel tank.
  12. Install the fuel tank. Refer to Fuel Tank Replacement .