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Heat/ac Fan

BOWTIE 3

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BOWTIE 3 Enthusiast

BOWTIE 3

Posted
Posted

The heat/A/C fan on my '01 Silverado doesn't work on the slowest speed. The rest of the speeds work OK. Is there a relay for this or is it time for a switch?

ThorsHD Enthusiast

ThorsHD

Posted
Posted

mine does the same thing. I've been told you have to replace the switch. it's an easy swap. the part is about 100. I've seen them used for about 25

bossier62guy Senior Enthusiast

bossier62guy

Posted
Posted
mine does the same thing. I've been told you have to replace the switch. it's an easy swap. the part is about 100. I've seen them used for about 25

 

You sure it's not the resistor that you need to replace? It's a pretty common problem....

BOWTIE 3 Enthusiast

BOWTIE 3

Posted
  • Author
Posted
mine does the same thing. I've been told you have to replace the switch. it's an easy swap. the part is about 100. I've seen them used for about 25

 

You sure it's not the resistor that you need to replace? It's a pretty common problem....

 

 

 

How do I find, test, and/or replace this resistor?

rjirvine Enthusiast

rjirvine

Posted
Posted

The blower motor resistor is mounted inboard of your blower motor under the passenger side dash. Mine cost about $18 at advance auto. Its easy to replace. You could change your cabin air filter while youre under there too.

bartlanz Enthusiast

bartlanz

Posted
Posted

hmmm, since this topic is around and we are talking about fans... mine screems like a yetti some times, any ideas? its usualy when its low speed first thing in the morn, if i crank it up it goes away and then i can put it back to low speed and we are good. Am I looking at a new fan?

rjirvine Enthusiast

rjirvine

Posted
Posted

Perhaps. I had a lillte piece of a plastic bag stuck in mine one, I pulled it out and everything worked fine. On an old honda my fan quit and when I pulled it out it was jammed with cat fur. The cat liked to sleep on the hood and over the years the fur got sucked down thru intake and jammed my fan.

bossier62guy Senior Enthusiast

bossier62guy

Posted
Posted
mine does the same thing. I've been told you have to replace the switch. it's an easy swap. the part is about 100. I've seen them used for about 25

 

You sure it's not the resistor that you need to replace? It's a pretty common problem....

 

 

 

How do I find, test, and/or replace this resistor?

 

 

It's on the bottom side of the blower motor. I think it has a 7 wire connector running to it and two screws holding it in. You can test it w/ a multimeter but usually you can tell just by looking at them once you remove it that one or more positions is toast.

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