I found a post here about folks that are having trouble with the fan resistor because there fan only works in high position. I have the opposite problem. My fan switch works in all positions except 5. Does this sound like the same fan resistor problem or do I have a problem with my air control module or maybe the switch inside of my air control module? I have heard that the resistor only controls certain speeds by a mechanic. Does anybody know what it is I need to replace? I just have the basic control unit with dials.