2003 Chevrolet Astro blower switch doesn't work

astro
chevrolet

#1

my blower switch on the heater controls not working. replaced control unit in the dash. still blower won’t come on. replaced blower motor. and resistor last year. ???


#2

Are you uncertain that the blower motor and resistor were replaced?


#3

I have seen where a blower motor has bad bearings and this causes the resistor pack to burn out prematurely.

Even though the blower was replaced, you may have gotten a bad one.

You will have to test the blower by jumping from a known hot lead to check if it is even working.

Yosemite


#4

How 'bout the fuse?

Tester