GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

    • J 34730 Fuel Pressure Gauge
    • J 39765 Fuel Sender Lock Nut Wrench

Caution: Fuel Vapors can collect while servicing fuel system parts in enclosed areas such as a trunk. To reduce the risk of fire and increased exposure to vapors:

   • Use forced air ventilation such as a fan set outside of the trunk.
   • Plug or cap any fuel system openings in order to reduce fuel vapor formation.
   • Clean up any spilled fuel immediately.
   • Avoid sparks and any source of ignition.
   • Use signs to alert others in the work area that fuel system work is in process.

Caution: Provide proper ventilation when working with fuel in enclosed areas where fuel vapors can collect. The lack of adequate ventilation may result in personal injury.

Caution: Always wear safety goggles when working with fuel in order to protect the eyes from fuel splash.

Notice: Clean all of the following areas before performing any disconnections in order to avoid possible contamination in the system:

   • The fuel pipe connections
   • The hose connections
   • The areas surrounding the connections

Notice: Do Not handle the fuel sender assembly by the fuel pipes. The amount of leverage generated by handling the fuel pipes could damage the joints.


    Object Number: 180378  Size: SH
  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .

  2. Object Number: 211302  Size: SH
  3. Drain the fuel tank (1) to at least 3/4 of a tank full. Refer to Fuel Tank Draining .
  4. Important: The modular fuel sender support assembly will spring-up when the locking ring is moved.


    Object Number: 187107  Size: SH
  5. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .

Disassemble Procedure


    Object Number: 191818  Size: SH
  1. Note the position of the fuel sender strainer for installation.
  2. Support the reservoir with one hand and grasp the fuel sender strainer with the other hand.
  3. Pull the external fuel sender strainer off of the fuel pump.
  4. Inspect the fuel sender strainer. If the fuel sender strainer is contaminated, the fuel tank should be cleaned.
  5. Discard the fuel sender strainer after inspection.

  6. Object Number: 50562  Size: SH
  7. Disassemble the electrical connectors from the sensor assembly of the fuel pump and the cover assembly.
  8. Disassemble the fuel level sensor assembly.

Assemble Procedure


    Object Number: 50562  Size: SH
  1. Assemble the fuel level sensor assembly.
  2. Assemble the electrical connectors to the fuel pump and the cover assembly.

  3. Object Number: 191818  Size: SH
  4. Position the new fuel sender strainer on the modular fuel sender and push on the outer edge of the fuel sender strainer until the fuel sender strainer is fully seated.

Installation Procedure


    Object Number: 187107  Size: SH
  1. Reinstall the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
  2. 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.

  3. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  4. Inspect for leaks.
  5. 3.1. Turn ON the ignition for 2 seconds.
    3.2. Turn OFF the ignition for 10 seconds.
    3.3. Turn ON the ignition.
    3.4. Check for fuel leaks.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.


    Object Number: 153237  Size: SH
  6. Install the fuel sender access panel (2).
  7. Tighten
    Tighten the fuel sender access panel bolts to 2 N·m (18 lb in).

  8. Install the rear compartment floor trim (1). Refer to Rear Compartment Trim Panel Replacement in Body Rear End.
  9. Install the spare tire, the jack, and the spare tire cover.

  10. Object Number: 153705  Size: SH
  11. Add fuel to the fuel tank.
  12. Install the fuel tank filler pipe cap (1).
  13. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.

  14. Object Number: 475295  Size: SH
  15. Install the intake manifold sight shield (1) to the engine.
  16. Install the intake manifold sight shield nuts (2).
  17. Tighten
    Tighten the nuts to 3 N·m (27 lb in).