The major symptom I'm having is that the air coming through the vents is consistently HOT--not warm or outside air temperature, but HOT, like the heater is running. I'm assuming there is something wrong with the hot/cold knob because it won't turn all the way. If I turn as far as it will go to the red/hot side, it does indeed get hotter than if I turn it as far as it will go to the blue/cold side. But the knob only moves about an inch in either direction, so it never actually reaches the end of the red or blue stripes.
So I'm guessing I have to replace the knob? Does that sound right?
So now I'm stumped on how to get the old one out. Any info would be most appreciated. Thank you!