2006 Chevy 3500 Duramax A/C Problem
 

The a/c control panel is not indicating anything. No power, no lights, nothing coming from it at all. I checked power going to the fan and it has power but fan will not turn on until I ground the hot wire. I replaced the panel earlier today but it did not help. Same problem, no power still. Does anyone have any ideas on what could be wrong or how to fix it??