I have an '05 F250 I pulled up to the pump to pump some $4.80 a gallon diesel. I got back in the truck started it up and the air will ONLY blow out of the defrost vents. I turned off both the ac and truck pushed all the controls and no matter what the air only blows out of those vents. ???????????????????

I have a very similar issue, along with the $4.80/gallon, my 2005 blows about half of my a/c at the winshield and half to the cabin.