GM Service Manual Online
For 1990-2009 cars only

Fuel Pump Replacement Balance

Removal Procedure

Caution: Replace the O-ring seals exposed during component service in order to reduce the risk of fire and personal injury that may result from a fuel leak.

    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 pressure. Refer to Fuel Pressure Relief Procedure . Loosen both the filler caps to relieve fuel tank pressure.

  3. Object Number: 19669  Size: SH
  4. Disconnect the electrical connector.

  5. Object Number: 19670  Size: SH
  6. Clean both fuel pipe connections and surrounding areas at the fuel pump before disconnecting to avoid possible contamination of the fuel system.
  7. Disconnect both fuel pipes from the pump.

  8. Object Number: 19671  Size: SH
  9. Slide the pump out of the bracket.

Installation Procedure

  1. Install the new fuel pipe O-rings.

  2. Object Number: 19671  Size: SH
  3. Position the new pump in the pump bracket.

  4. Object Number: 19670  Size: SH
  5. Connect the fuel feed pipe and suction pipe to the fuel pump.
  6. Tighten

        • Use a backup wrench to prevent the pump from turning.
        • Tighten the fittings to 30 N·m (22 lb ft).

    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: 19669  Size: SH
  7. Connect the electrical connector.
  8. Connect the negative battery cable.
  9. Check for fuel leaks.
  10. 6.1. Turn the ignition ON for 2 seconds.
    6.2. Turn OFF the ignition for 10 seconds.
    6.3. Again, turn the ignition switch to the ON position.
    6.4. Check for fuel leaks.