I have finally got my dally running good and running cool. I noticed today that it sounds like water running in the dash area around the glove box. When I give the truck fuel it sounds like a vaccum value of some kind squeeking to open and you here water running..let off the pedal and it stops.....We haven't had any rain in over a month.....Also after I drove the truck for over 200 miles Istopped and lewt the truck run for about 30 mins,,,,,,all of a sudden it started leaking anti-freeze from somewhere under the fill tank, the truck never got over 190 degrees and I couldn't find were the anti-freeze was coming from....I loosed the cap and tightened it back the leak stopped and has leaked since...........Any ideas....Thanks for the help, you all have helped me alot in the past