Advice on 2004 trailblazer?

I have a 2004 Trailblazer,and the other day the blower motor for the AC/heat stopped working. I checked all the fuses I could find,but It still won't work. My question I guess is,1 isn't it a bit soon for the motor to go,and 2 Its there maybe a relay that I don't know about or a way to find out what exactly is wrong with it. I don't make much money these days and I am trying to fix it cheaply