GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 34730 Fuel Pressure Gauge

Caution: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.


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

  2. Object Number: 66012  Size: SH
  3. Drain the fuel tank. Refer to Fuel Tank Draining
  4. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .

Disassembly Procedure


    Object Number: 50636  Size: SH
  1. Inspect the position of the fuel strainer (4) for installation.
  2. Support the reservoir with one hand and grasp the fuel strainer with the other hand.
  3. Place the fuel sender assembly upside down on a bench.
  4. Remove the fuel sender strainer (4) from the fuel sender pad (3).
  5. Inspect the fuel sender strainer. If the fuel sender strainer is contaminated, the fuel tank should be cleaned. Refer to Fuel System Cleaning . Discard the fuel level sensor after inspection.
  6. Remove the electrical connectors from the fuel sender and cover assembly.
  7. Remove the fuel level sensor assembly (5) from the fuel sender (2).

Assembly Procedure


    Object Number: 50636  Size: SH

    Important: Always install a new fuel level strainer when installing a fuel sender or fuel level sensor assembly.

  1. Position the new fuel sender strainer (3) on the fuel sender pad (4) and push the outer edge of the fuel sender strainer until the fuel sender strainer is fully seated.
  2. Install the new fuel level sensor assembly (5) on to the fuel sender (2).
  3. Install the electrical connectors to the fuel sender and the cover assembly.

Installation Procedure

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: 66012  Size: SH
  1. Install the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
  2. Add fuel to the fuel tank.
  3. Install the fuel tank filler pipe cap.
  4. Install the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  5. Inspect for leaks.
  6. 5.1. Turn the ignition switch to the On position for 2 seconds.
    5.2. Turn the ignition switch to the Off for 10 seconds.
    5.3. Turn the ignition switch to the On position.
    5.4. Check for fuel leaks.
  7. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .