I have a 2005, 2500 4x4. No problems until now. The a/c vent fan is set on the highest level and sounds like it is blowing like hell but the air coming out of the vent is like I have it on low. Is it stuck on recirculation mode??? I just know the wifes pissed everytime I want to take the truck cuz the truck never cools off. (I guess I could always just leave her at home.)

Thanks in advance for any insight that someone may have.