GM Service Manual Online
For 1990-2009 cars only

Fuel Sender Assembly Replacement W/O FFS

Tools Required

    • J 34730-1A Fuel Pressure Gauge
    • J 37088-A Tool Set, Fuel Line Quick Connect Separator

Removal Procedure (Left or Right)

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  3. Caution: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Remove the rear wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  6. Clean all of the fuel connections and the surrounding areas before disconnecting the fuel pipes in order to avoid possible contamination of the fuel system.
  7. Drain the fuel tanks. Refer to Fuel Tank Draining .
  8. Remove the fuel tank shield.
  9. Mark or identify each fuel pipe in order to aid in installing the pipes in their original positions.
  10. Disconnect the quick-connect fittings from the fuel sender. Refer to Plastic Collar Quick Connect Fitting Service .
  11. Cap all of the fuel pipes.
  12. Disconnect the fuel sender electrical connector.
  13. Remove the fuel tank strap.
  14. Support the fuel tank.
  15. Remove the fuel sender attaching bolts.
  16. Remove the float arm retaining clip and the float arm for the left fuel sender only.
  17. Carefully remove the fuel sender with the gasket.
  18. Clean the gasket sealing surfaces.

Installation Procedure (Right)

  1. Inspect the fuel sender gasket for damage and replace if necessary.

  2. Object Number: 860251  Size: SH

    Important: Do not bend or twist the float arm.

  3. Insert the float arm through the fuel tank opening.
  4. The fuel sender may need to be rotated in order to facilitate the installation.
  5. Align the fuel sender gasket tab (2) with the fuel sender cover mark (1).
  6. Align the fuel sender cover mark (1) with the fuel tank mark.

  7. Object Number: 197101  Size: SH
  8. Hand tighten the fuel sender attaching bolts until finger tight.
  9. Notice: Refer to Fastener Notice in the Preface section.

  10. Tighten the fuel sender assembly attaching bolts in sequence.
  11. Tighten
    Tighten the bolt to 7 N·m (62 lb in).

  12. Connect the fuel sender fuel feed pipe (1) (from the jet pump to the left tank, and the fuel feed rear crossover pipe (2) from the left tank to the jet pump). Refer to Plastic Collar Quick Connect Fitting Service .

  13. Object Number: 197101  Size: SH
  14. Connect the fuel sender electrical connector.

  15. Object Number: 107562  Size: SH

    Object Number: 561134  Size: SH
  16. Install the fuel tank strap (3).
  17. Install the fuel tank strap bolts (1, 2, 4).
  18. Tighten

        • Tighten the bolt (2) to 25 N·m (18 lb ft).
        • Tighten the bolt (1) to 25 N·m (18 lb ft).
        • Tighten the remaining bolts (4) to 25 N·m (18 lb ft).

    Object Number: 561113  Size: SH
  19. Install the fuel tank shield  (1).
  20. Install the fuel tank shield mount bolt (2).
  21. Install the fuel tank shield mount nut (3).
  22. Tighten

        • Tighten the fuel tank shield mount bolt to 25 N·m (18 lb ft).
        • Tighten the fuel tank shield mount nut to 12 N·m (106 lb in).
  23. Install the rear wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  24. Lower the vehicle.
  25. Refill the fuel system.
  26. Install the fuel filler cap.
  27. Connect the negative battery cable.
  28. Perform the following procedure in order to inspect for leaks:
  29. 20.1. Turn the ignition switch ON for 2 seconds.
    20.2. Turn the ignition switch OFF for 10 seconds.
    20.3. Turn the ignition switch ON.
    20.4. Inspect for fuel leaks.
  30. Program the transmitters. Refer to Transmitter Programming in Keyless Entry.

Installation Procedure (Left)


    Object Number: 860252  Size: SH
  1. Install fuel pump strainer in the same position as noted during disassembly. Push on the outer edge of the strainer ferrule until the strainer is fully seated.
  2. Install a sender gasket on the fuel sender.
  3. Insert the fuel sender through the fuel tank opening.
  4. The fuel sender may need to be rotated in order to facilitate the installation.
  5. Important: Do not bend or twist the float arm.

  6. Insert the float and the float arm into the fuel tank opening.
  7. Install the float arm retaining clip.

  8. Object Number: 197100  Size: SH
  9. Align the fuel sender gasket tab (1) with the fuel sender cover mark  (2).
  10. Align the fuel sender cover mark (2) with the fuel tank mark.
  11. Tighten the fuel sender attaching bolts until the bolts are finger tight.

  12. Object Number: 197100  Size: SH
  13. Tighten the fuel sender assembly attaching bolts in proper sequence.
  14. Tighten
    Tighten bolts to 7 N·m (62 lb in).


    Object Number: 107563  Size: SH
  15. Connect the fuel sender fuel feed pipe (1) from the jet pump to the left tank, to the fuel return rear pipe (2), and to the fuel feed rear pipe  (3). Refer to Plastic Collar Quick Connect Fitting Service .
  16. Connect the fuel sender electrical connector.

  17. Object Number: 561134  Size: SH
  18. Install the fuel tank strap (3).
  19. Install the fuel tank strap bolts (1, 2, 4).
  20. Tighten

        • Tighten the bolt (2) to 25 N·m (18 lb ft).
        • Tighten the bolt (1) to 25 N·m (18 lb ft).
        • Tighten the remaining bolts (4) to 25 N·m (18 lb ft).

    Object Number: 561113  Size: SH
  21. Install the fuel tank shield (1).
  22. Install the fuel tank shield mount bolt (2).
  23. Install the fuel tank shield mount nut (3).
  24. Tighten

        • Tighten the fuel tank shield mount bolt to 25 N·m (18 lb ft).
        • Tighten the fuel tank shield mount nut to 12 N·m (106 lb in).
  25. Install the rear wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  26. Lower the vehicle.
  27. Refill the fuel system.
  28. Install the fuel filler cap.
  29. Connect the negative battery cable.
  30. Perform the following procedure in order to inspect for leaks:
  31. 23.1. Turn the ignition switch ON for 2 seconds.
    23.2. Turn the ignition switch OFF for 10 seconds.
    23.3. Turn the ignition switch ON.
    23.4. Inspect for fuel leaks.
  32. Program the transmitters. Refer to Transmitter Programming in Keyless Entry.