no heat/defrost fan
 

before i dig into this is it more likely the switch or the motor?...72 burb, thanks

fuse good??? pull the wire that connects to the fan and see if you have power

Start with the fuse as already stated. 2 weeks ago I noticed a broken fuse and replaced it but the fuse next to it was also broken. I was in a rush to get my dads heater working and before you know it I was chasing my tail not realizing/seeing the other broken fuse as it was getting dark outside.