2003 Chevy Tahoe blower control issue

chevrolet
tahoe

#1

My HVAC blower switch only works when I put it on 5 (the highest setting). What needs to be replaced (besides the whole truck)?


#2

This symptom usually points to the blower motor resistor.


#3

Thank you very much!


#4

You may find that the original resistor pack was burned out due to the blower motor dragging.


#5

Often, a dragging blower motor will cause the resistor pack to burn out, so if you are a gambler, you could try just replacing the resistor pack and see if the new one burns out in short order. If it does, you need a blower motor as well. If you don’t want this hassle, go ahead and change the motor and resistor pack.