It was working and then completely stopped the front AC, while driving you can feel cold air coming out slowly, checked for the defroster and it doesn't blow either. It was not working for 4 days and then it started working fine for 2 days. Today it's not working again. I heard it could be the blower resistor module, or motor? I haven't checked the fuses or wiring yet. Any help with this would be great!!!

 

Had similar issue on our 2005 Yukon this summer: intermittent front fan operation. I suspected blower motor or blower resistor, but decided to let our local mechanic do this job as to push the responsibility to him, plus the awkward positioning of the body to do this repair. Turned out that there was too much resistance in the blower motor, which damaged the blower resistor, so he replaced both (1 hour labor), and has worked fine since (Arizona).