Express, Savana, G1500, G2500, G3500, 1998-2005

Fuel Filter

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Draining Water



  1. Attach a small piece of hose to the drain cock onto the water-in-fuel sensor.

    Click image to see an enlarged view

    Fig. Attach a hose to the drain cock onto the water-in-fuel sensor-6.6L engines

  2.  
  3. Place an approved fuel-resistant container under the fuel filter.
  4.  
  5. Open the drain cock 3 or 4 turns or until the water contaminated fuel seeps from the drain cock.

    Click image to see an enlarged view

    Fig. Open the drain cock until the water contaminated fuel seeps from the drain cock-6.6L engines

  6.  
  7. Perform the purging procedure until only diesel fuel drains from the assembly.
  8.  
  9. Tighten the drain cock.
  10.  
  11. Remove the container and hose.
  12.  

Removal & Installation



  1. Disconnect the negative battery cables.
  2.  
  3. If necessary, remove the wheelhouse liner for additional access.
  4.  
  5. Drain the fuel from the fuel filter as follows:
    1. Install a hose on the water drain on the water-in-fuel sensor.
    2.  
    3. Place the other end of the hose into an approved container.
    4.  
    5. Drain as much fuel as possible from the fuel filter housing.
    6.  
    7. Tighten the water drain on the water-in-fuel sensor.
    8.  

  6.  
  7. Remove or disconnect the following:

    Water-in-fuel sensor harness connector
     
    Fuel filter from the fuel filter/heater element housing
     
    Water-in-fuel sensor from the fuel filter

    Click image to see an enlarged view

    Fig. Exploded view of the fuel filter-6.6L engines

     

  8.  

To install:

  1. Install or connect the following:
    NOTE
    Check the fuel filter/heater element housing and the filter for a dislocated filter seal or foreign debris. Contamination on the filter/heater housing may cause leakage at the fuel filter. Coat the seal with clean engine oil.



    Water-in-fuel sensor in the fuel filter
     



    Fuel filter on the fuel filter/heater element housing
     
    Water-in-fuel harness connector
     
    Negative battery cables
     

  2.  
  3. Purge the fuel system:
  4.  

 
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