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How to Replace a Fuel Filter in a Pontiac Bonneville

by Contributor

The fuel filter in your Pontiac Bonneville screens out dirt and rust particles from the fuel. Some mechanics recommend that you replace the fuel filter every 30,000 to 40,000 miles to keep your Bonneville in good running order. Follow the instructions below to replace the fuel filter on your Pontiac Bonneville in less than 45 minutes.

Disconnect the negative battery cable. Relieve the vapor pressure in the fuel tank by slowly loosening the fuel filter cap. Wrap a shop towel around the fuel pressure valve as you connect a pressure gauge to the fuel pressure valve.

Put the bleed hose of the gauge in a container that will hold the fuel. Open the gauge valve to bleed the system pressure. Drain any fuel that remains in the gauge into the container too.

Twist the quick connector a quarter turn in each direction to loosen any dirt that may have collected on the connector. Then, use an air compressor to blow off the dirt. Squeeze the plastic tabs of the male connector and pull outward. Remove the connection from the filter inlet.

Remove the filter. Position the new filter in place, making sure the arrow on the filter points in the direction that the fuel flows. Make sure the connector is clean, and that you use a new plastic retainer on the filter.

Apply a few drops of engine oil to the male pipe end of the filter, then push the fuel line on to the filter. Listen for the plastic retainer to snap into place. Check to be sure the connector is locked by trying to pull it from the filter.

Install the threaded connection to the inlet end of the filter. Tighten it to 22 ft-lbs. Reconnect the negative battery cable. Restore the pressure to the fuel system by turning the ignition on for 2 seconds, turning it off for 10 seconds, and then turning it on again. Check for fuel leaks in your Pontiac Bonneville.

Warnings

  • Do not disconnect the fuel lines until you let the pressure out of the fuel system.
  • Before starting your vehicle, be sure to wipe up any fuel that may have spilled while replacing the fuel filter.

Items you will need

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