Newbie Heat Question - Help Please
I have done some searching but I am still a Gen 1 newbie so I need some help please. When I turn on my heat or defrost in my truck it all comes out the ac vents. No matter what is pushed it always comes out the ac. Can someone please point me in the right direction? Could this be the controls, vacume line, or maybe the blend door stuck? Any help would be great! Thanks in advance.