GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.


    Object Number: 626413  Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Drain the fuel tank. Refer to Fuel Tank Draining .
  3. Remove the fuel tank fill pipe. Refer to Filler Tube Replacement .
  4. Remove the EVAP canister vent solenoid. Refer to Evaporative Emission Canister Vent Solenoid Valve Replacement .
  5. Remove the fuel tank shield bolts, if equipped.
  6. Remove the fuel tank shield, if equipped.

  7. Object Number: 1238591  Size: SH
  8. Disconnect the fuel feed and EVAP lines. Refer to Plastic Collar Quick Connect Fitting Service .
  9. Cap the fuel and EVAP lines in order to prevent possible system contamination.

  10. Object Number: 1228093  Size: SH
  11. Place a suitable adjustable jack under the fuel tank.
  12. Remove the fuel tank strap bolts.
  13. Remove the fuel tank straps.
  14. Lower the fuel tank half way.
  15. When lowering the tank, ensure that the fill neck on the tank does not get hung up on the harness.

  16. Disconnect the electrical harness clip at the frame crossmember.
  17. Lower the fuel tank until the electrical connections are accessible.

  18. Object Number: 1238148  Size: SH
  19. Disconnect the fuel pressure sensor electrical connector (1).
  20. Disconnect the fuel sending unit electrical connector (2), perform the following:
  21. 16.1. Disengage the gray retainer.
    16.2. Push down the black clip.
    16.3. Disconnect the connector.
  22. Completely lower the fuel tank.
  23. With the aid of an assistant, place the fuel tank in a suitable work area.

  24. Object Number: 1306291  Size: SH
  25. If necessary, disconnect and remove the fuel feed line (1) from the sending unit and retaining clips.
  26. If necessary, disconnect and remove the EVAP purge line (2) from the retaining clips.
  27. If necessary, disconnect and remove the EVAP fuel level vent valve (FLVV) line from the FLVV, sending unit, and retaining clips.
  28. If necessary, remove the sending unit. Refer to Fuel Sender Assembly Replacement .

Installation Procedure


    Object Number: 1306291  Size: SH
  1. If necessary, install the sending unit. Refer to Fuel Sender Assembly Replacement .
  2. If necessary, install and connect the EVAP FLVV line to the FLVV, sending unit, and retaining clips.
  3. If necessary, install and connect the EVAP purge line (2) to the retaining clips.
  4. If necessary, install and connect the fuel feed line (1) to the sending unit and retaining clips.

  5. Object Number: 1238148  Size: SH
  6. With the aid of an assistant, place the fuel tank onto the adjustable jack.
  7. Raise the fuel tank until the electrical connections can be made.
  8. Connect the fuel sending unit (2) and pressure sensor (1) electrical connectors.
  9. Completely raise the fuel tank.
  10. When raising the tank, ensure that the fill neck on the tank goes over the harness.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1228093  Size: SH
  11. Install the fuel tank straps.
  12. Install the fuel tank strap bolts.
  13. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  14. Remove the adjustable jack from under the fuel tank.

  15. Object Number: 1238591  Size: SH
  16. Remove the caps from the fuel and EVAP lines.
  17. Connect the fuel feed and EVAP lines. Refer to Plastic Collar Quick Connect Fitting Service .

  18. Object Number: 626413  Size: SH
  19. If necessary, install the fuel tank shield.
  20. If necessary, install the fuel tank shield bolts.
  21. Tighten
    Tighten the bolts to 18 N·m (13 lb ft).

  22. Install the EVAP canister vent solenoid. Refer to Evaporative Emission Canister Vent Solenoid Valve Replacement .
  23. Install the fuel tank fill pipe. Refer to Filler Tube Replacement .
  24. Refill the fuel tank.
  25. Install the fuel cap.
  26. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  27. Perform the following procedure in order to inspect for leaks:
  28. 21.1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    21.2. Turn the ignition OFF for 10 seconds.
    21.3. Turn the ignition ON, with the engine OFF.
    21.4. Inspect for fuel leaks.