Blower only works on high

[19Blazer80]

Sorry, but the site won't let me search on my tablet...

What do I need to fix or replace for my blower to work on the other settings?

 

[facelessnumber]

Blower motor resistor. Cheap and easy!

 

[89Suburban]

Blower motor resistor. Cheap and easy!

This is most likely, the switch is another possibility, I have seen those burn up inside as well.

 

[19Blazer80]

Have any pics of where its at?

 

[1ATony]

Have any pics of where its at?

Not sure of what options you have, but here's a link to one that we carry for your truck. Chevy Blazer Blower Motor Resistor

 

[89Suburban]

Have any pics of where its at?

Under the hood on the heater blower/fan housing against the pass side firewall.

 

[T-ROD]

The resistor is A good possibility, Ive seen switches burn up also, but usualy if only high works its either a corroded wire, or a burned up resistor, probably under $10 bucks at oreillys.