I have a 83 GT with factory a/c. I decided to start it up today. I went to adjust the heater controls to defrost, it wouldn't move past "High/Low" on the HVAC control. It feels like something is jammed. As well, the heater fan quit working. If I wiggle it to MAX on A/C, the fan begins to work on all speeds. I'm not sure where to start. I know the whole defrost, heat, vent... works on vacuum so I don't think a cable is jammed. As far as the fan not working, the resistor must be good if all speeds work on MAX A/C.
It all worked when I parked in in my garage last fall. The only work I'm currently doing is replacing both power window motors.
Any help would be appreciated
83-Steaman
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