GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

The fuel filter is located under the rear of the car, rearward of the fuel tank. There is no service interval for the fuel filter replacement. Replacement is required only if the fuel filter becomes restricted.


    Object Number: 12836  Size: SH
  1. Remove the negative battery cable.
  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. Relieve fuel system pressure. Refer to Fuel Pressure Relief .
  4. Raise vehicle.
  5. Caution: Provide additional support when a vehicle is on a hoist in the following ways:

       • Before removing parts, support the opposite end. This helps prevent the vehicle from slipping off.
       • Before removing major components, chain the vehicle frame to the hoist pads at the same end as the removal. This helps avoid a tip-off.
    Failure to follow these precautions could cause vehicle damage, serious personal injury, or death.

    Caution: In order to Reduce the Risk of Fire and Personal Injury:

       • If nylon fuel pipes are nicked, scratched or damaged during installation, Do Not attempt to repair the sections of the nylon fuel pipes. Replace them.
       • When installing new fuel pipes, Do Not hammer directly on the fuel harness body clips as it may damage the nylon pipes resulting in a possible fuel leak.
       • Always cover nylon vapor pipes with a wet towel before using a torch near them. Also, never expose the vehicle to temperatures higher than 115°C (239°F) for more than one hour, or more than 90°C (194°F) for any extended period.
       • Before connecting fuel pipe fittings, always apply a few drops of clean engine oil to the male pipe ends. This will ensure proper reconnection and prevent a possible fuel leak. (During normal operation, the O-rings located in the female connector will swell and may prevent proper reconnection if not lubricated.)

  6. Using back-up wrench, remove fuel filter fitting.
  7. Caution: Wear safety glasses when using compressed air in order to prevent eye injury.

  8. Grasp filter and nylon fuel connection line fitting. Twist quick-connect fitting 1/4 turn in each direction to loosen any dirt within fitting. Using compressed air, blow out dirt from quick-connect fittings at end of fuel filter.
  9. Remove the quick connect fitting by pushing inward toward filter and grasping plastic tab around the connector and pull apart.
  10. Remove the fuel filter (1).

Installation Procedure

Caution: Always apply a few drops of clean engine oil to the male pipe ends before connecting the fuel pipe fittings in order to reduce the risk of fire and personal injury. This will ensure proper reconnection and prevent a possible fuel leak. During normal operation, the O-rings located in the female connector will swell and may prevent proper reconnection if not lubricated.

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: 12836  Size: SH
  1. Remove protective caps from new filter.
  2. Install the filter in same position as old filter.
  3. • Apply a few drops of clean engine oil to the male tube end of the filter and of the fuel sender assembly.
    • Push connectors together to cause the retaining tabs/fingers to snap into place.
    • Once installed, pull on both ends of each connection to make sure they are secure.

    Tighten

       • 

    Use back up wrench to prevent filter, O-ring or fuel line damage.

       • 

    Fitting to 27 N·m(20 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.

  4. Install the fuel filter fitting using new O-ring.
  5. Lower vehicle.
  6. Install the fuel filler cap.
  7. Install the negative battery cable.
  8. Check for fuel leaks.
  9. 7.1. Turn ignition to ON position for 2 seconds.
    7.2. Then turn to OFF for 10 seconds.
    7.3. Turn the ignition to ON position.
    7.4. Check for fuel leaks.