How to Replace & Prime a Duramax Fuel Filter | It Still Runs Move to the top side of the engine and pull the fuel filter out of the engine compartment. Pour the excess diesel into the drip pan. Remove the water sensor with the pliers. Screw the water sensor onto the new Duramax fuel filter. Tighten with the pliers. Discard the old fuel filter into the drip pan. Videos of changing fuel filter duramax diesel Click to view on YouTube7:56Duramax 6 Fuel Filter Change1 views · 5 months agoYouTube › Delta BravoClick to view on YouTube8:03Duramax Fuel Filter Change112K views · Apr 9, 2014YouTube › Matt McDonaldClick to view on YouTube5:43How to Change a a Fuel Filter on a Duramax50K views · Oct 9, 2016YouTube › Truck MasterSee more videos of changing fuel filter duramax diesel How to Reset a Fuel Filter Alert on a GMC Duramax | It Some Chevrolet and GMC trucks equipped with the Duramax diesel engine come standard with an alert display in the dashboard. This alert system will let you know when to change your engine oil, when you have water in your fuel, as well as letting you know that your fuel filter will need changed soon. However, the act of How to Replace the Fuel Filter on a Duramax 6.6 Turbo Diesel Thread the separator onto the bottom of the new fuel filter and tighten it with the special tool. Remove the old filter gasket and place a new one from your fuel filter kit into the same position. Place the filter in an upright position on the frame rail through the opening in the wheel well liner.