This still sounds like an actuator problem. It could be the control unit is not senidng power to the actuator that controls the hot air/cool air. There are two. I'll send a generic draiwng of what i'm talking about. You might be able to temporarily fix it for cooler air. But you'll need to see if they work, switching form hot to cool for one and the otherfrom defrost to ducts on dash. This is under the dash by the way.
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Tuesday, October 23rd, 2018 AT 12:16 PM