so the other day i turned on my ac and set the dial to cold. the truck blew hot air i then set it to hot and it blew cold. the cold spot seems to be moving on a daily basis.

what is going on here and how do i fix this

 

A little more info would help my friend. Like year for starters. I'm going to guess you probably need a new switch if you don't have the electronic controls. That is the usual culprit.

 

Has the truck been worked on recently for the electrical system, almost sounds like a relay is wired backwards. Just an idea, I don't know much about the Electrical system on these trucks

 

It is an 09 xlt 4x4 screw. No fancy thermostat just a dial with hot on one side and cold on the other. Like I said before it is not consistent one time the cold spot isone place and another time it is different.