If you put in really wet fuel, you are going to have to drain the tank. Go to a marine store and get one of those pumps for changing oil that fit on an electric drill (~$30. 00). You will probably have to buy extra tubing at a hardware store in order to reach the bottom of the tank. Pump out all the fuel. Remember that the water is at the bottom of the tank and must be sucked out along with the gunk that probably came along with the water. Change your fuel filter and then try an additive if necessary. Do a good job because it doesn't take much water to ruin your fuel pump and injectors.
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1999 Quad cab 2500, SB, SLT, 4X4, 5-speed, 3. 54, tow and camper package, Lance 820 camper, Lance cabover stabilizers, Rancho 9000s, Airlift airbags,Reese Titan V hitch, Mag-Hytec differential cover with Amsoil 2000 75W-90 lube, Amsoil air filter