DMC5180,

Thanks for your reply. Yes, it is stuck period! I understand that it can be mounted in six positions, but I can clearly see that nothing is moving to the point I can almost twist the radio console in its' mounting.

I try to use the control knob as well as 'pulling'(with long nose needle-nose pliers) on the cable leading to the heater/ac door lever .......and nothing moves! The gear assembly in this control is at its' maximum position, so I can see I'm pulling in the correct direction as opposed to 'pushing' this cable control. (if stuck in heater mode)

This is why I suspect either the cable is rusted in place or the heater/ac door is stuck internally?