I have a 2006 Trailblazer. I remember right, the blower was only working on 2 or 3 settings, then my wife said it quit completely. I have tried replacing everything I can think of. The control head in the dash, all (I think) applicable fuses, the blower resistor and the motor itself. Is there something I'm missing or just haven't come across yet? Is there a fuseable link somewhere that could be at fault?

 

I have same issue replaced all as well frustrated u have any luck yet

 

I found the problem in mine it's the plug that goes to the resistor it's burnt if u unplug it from the se sister and look at it u will see it mine burnt and melted check it out