Things to check in order of likelyhood of failure: 1- circuit breaker, (make sure it has been upgraded to 30 amps) 2- fan motor, check for continuity and ground, also see if there is power there when turned on. 3- mode switch 4- fan speed relays (least likely because they wouldn't all be bad). 1 and 2 are the most likely but don't overlook the obvious like a wire that broke or a connecter that fell off. Overheated wires by the fuse panel are a sure sign of problems. David Teitelbaum vin 10757 > > Hey guys...i have developed another problem. My interior fan has stopped > > working. It doesn't work on any of the speeds. What could be the > culprit? > > > > Thanks > > Willie > > Vin 5043