Fuel Filter Replacement 2004 Buick Park Avenue

2004 Buick Park AvenueWhere is the fuel filter located?


The fuel filter is located under the car along the frame rail.

fuel filter location diagram 2004 Buick Park Avenue

Fuel Filter Replacement

Removal Procedure


   • There is no service interval for fuel filter replacement. Only replace the fuel filter if the filter is restricted.
   • Inspect the fuel tank internally and clean the fuel tank if you find a restricted fuel filter.


  • Relieve the fuel system pressure.
  • Raise the vehicle.
  • Disconnect the quick-connect fitting (4) at the fuel filter inlet.
  • Disconnect the threaded fitting at the fuel filter outlet.
  • Drain any remaining fuel into an approved gasoline container.
  • Remove the fuel pipe O-ring.

Installation Procedure


  • Remove the protective caps from the new fuel filter.
  • Install the new plastic connector retainer on the fuel filter inlet. Install the new retainer in the same position as on the old fuel filter.
  • Lubricate the new fuel pipe O-ring with clean engine oil.
  • Install the fuel pipe O-ring.
  • Slide the fuel filter into place.
  • Connect the quick-connect fitting (4) to the fuel filter inlet.


Caution! 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.


  • Connect the threaded fitting to the fuel filter outlet. Use a back-up wrench in order to prevent the fuel filter from turning.



Tighten the fuel filter fitting to 30 N·m (22 lb ft).


  • Lower the vehicle.
  • Tighten the fuel tank filler pipe cap.
  • Connect the negative battery cable.
  • Inspect for fuel leaks.
  1. Turn ON the ignition for 2 seconds.
  2. Turn OFF the ignition for 10 seconds.
  3. Turn ON the ignition .
  4. Inspect for fuel leaks.
  • Install the fuel injector sight shield.