GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 43827 Fuel Sending Unit Wrench

Removal Procedure

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


    Object Number: 892359  Size: SH
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Remove the fuel lines and electrical connectors from the fuel pump cover.
  3. Notice: Refer to Retainer Ring Damage Notice in the Preface section.


    Object Number: 892958  Size: SH
  4. Use the J 43827 and remove the fuel pump module retaining ring. A 1.3 cm (1/2 in) breaker bar, approximately 46 cm (18 in) long, will easily loosen and remove the lock ring.
  5. Notice: To prevent bending of the sending unit float arm during removal, lift the pump module up slightly to disengage the orientation tabs in the tank and rotate the module 45 degrees.

    Important: The fuel pump assembly is only serviced as a module without the sender unit. The inlet filter can be cleaned with mineral spirits, however, it can not be replaced.

  6. Remove the fuel pump from the fuel tank.

  7. Object Number: 893369  Size: SH
  8. Remove the wires from the clip.

  9. Object Number: 893370  Size: SH
  10. Remove the positive and negative connectors from the top of the pump.

  11. Object Number: 893372  Size: SH
  12. Remove the connector housing from the bottom side of the fuel pump cover. Disengage the locking tab with a fingernail or a small flat-blade screwdriver.

  13. Object Number: 892370  Size: SH
  14. Remove the fuel level sender card by depressing the locking tab and sliding the card up, toward the fuel pump cover.

Installation Procedure


    Object Number: 892370  Size: SH
  1. Slide the new sender unit into place until a click is heard, pulling up lightly to ensure the sender unit is locked into place.
  2. Important: Verify that the float arm on the sender unit maintains the correct relationship to the pump module by standing the module on a flat, horizontal surface. The float should lay on the surface.

  3. Connect the electrical connections.
  4. Important: The fuel pump module to tank seal must always be replaced whenever the module is removed from the fuel tank.

  5. Install the pump module and lock ring using a new tank seal.
  6. Reconnect the fuel lines and electrical connectors to the fuel pump.
  7. Install the fuel tank. Refer to Fuel Tank Replacement .