Blower not working. How do I figure out what is wrong with it?

if the blower is not working on any speed.either the fuse is blown or the blower motor is bad.if the resistor was bad,the blower motor would default to high speed only.

Check fuse 1st to blower motor that is your 1st step. If bad replace. 2nd check for power at blower motor. Put fan setting on 4/ high. If there is no power to the blower motor you will need to check to see if power is getting to the blower motor resistor the resistor is in line with that circuit so you can reduce fan speed there is a high failure rate at the blower motor resistor has this device takes a lot of heat during low settings you may call me at 860-265-3630 at automaster service center and I may be able to assist you some more