The rear air in my 03 Tahoe has gone out. It does not blow at all no hot or cole. The front still works perfectly fine. Does anyone have any idea what might cause this? Is there a fuse that runs that or maybe a shorted wire. It had quit for a few days then started working again and then went out completely.

 

Welcome to the forum.

Could be bad ground somewhere. Need to start at the rear fan motor and see where you are losing 12V.