The cable is busted, same problem with ours feels like its working ok when you turn it but it doesn't switch flow. Pull off the knob and go under the dash by the pedals and look up above where your right foot would be and there is one gray and one black box with two black cables going to each of them, the gray one has a spot where you can plug in the knob.... it may be hard to move at first but work it back and forth and your air will move.
I have the same problem on a 2005 Focus and found a broken vent cable.
theres a big plastic box inside the dash that controls the vent options for the truck.. this is common in dodge rams, the plastic tabs on the blend doors (blends air from inside, outside, hot and cold) break, and get stuck in a certain position
Is this vent in a car or house??
They are an undersea thermal vent or hydrothermal vent.
It is a geyser in the sea floor
Page 94
The heat valve is stuck.
In episode 101,102
you have a vacuum leak. defrost is the default when a vacuum leak is present.
How do you replace vent windowin a 2005 chevy malibu?
How to change vent vavle in 2005 Chavy Malibu
is it possible that the vent hose are disconected?