GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 34730 Fuel Pressure Gauge

Removal Procedure

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: 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.

  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .
  2. Drain the fuel tank to at least 3/4 of a tank full. Refer to Fuel Tank Draining .
  3. Remove the fuel tank. Refer to Fuel Tank Replacement .
  4. Important: The modular fuel sender support assembly will spring-up when the locking ring is moved.


    Object Number: 247940  Size: SH
  5. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .

Disassemble Procedure


    Object Number: 238597  Size: SH
  1. Note the position of the fuel sender strainer (2) for installation.
  2. Support the reservoir with one hand and grasp the fuel sender strainer with the other hand.

  3. Object Number: 191818  Size: SH
  4. Pull the external fuel sender strainer off of the fuel sender.
  5. Inspect the fuel sender strainer. If the fuel sender strainer is contaminated, the fuel tank should be cleaned.
  6. Discard the fuel sender strainer after inspection.

  7. Object Number: 238597  Size: SH
  8. Disassemble the electrical connectors from the fuel level sensor assembly (3) of the fuel pump and cover assembly.
  9. Disassemble the fuel level sensor assembly.

Assemble Procedure


    Object Number: 238597  Size: SH
  1. Assemble the fuel level sensor assembly (3).
  2. Assemble the electrical connectors to the fuel pump and 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 on to the sender assembly.

Installation Procedure


    Object Number: 247940  Size: SH
  1. Install the fuel sender assembly into the fuel tank. Refer to Fuel Sender Assembly Replacement .
  2. Install the fuel tank. Refer to Fuel Tank Replacement .

  3. Object Number: 235992  Size: SH
  4. Lower the vehicle.
  5. Install the negative battery cable.
  6. Add fuel to the fuel tank.
  7. Install the fuel tank filler pipe cap.
  8. 6.1. Turn ignition switch to ON for 2 seconds.
    6.2. Turn the ignition switch to OFF for 5 seconds.
    6.3. Turn the ignition switch ON.
    6.4. 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: 20426  Size: SH
  9. Install the intake manifold top cover.
  10. Tighten
    Tighten the nuts to 3 N·m (27 lb in).