My AC/Heat blower fan quit working. It started working on and off and then just quit totally. My husband took out the blower and tested it and it works. We bought a control module and he just put it in and nothing. We also got a blower resistor and he is getting ready to change that now, but he thinks that goes to the rear heat, which works fine. Does anyone have any suggestions as to what the problem might be. We are crossing our fingers it is the resistor. We live in Ohio and the frost is here and we have no Defrost! Any help would be greatly appreciated!!! Thanks.