No Fan

[ricky68]

So I get in my truck this morning when it is a balmy 19 degrees and discovered that my heater\ac fan is not working. I went through all the settings and when I got to high it kinda made a noise and my dash lights kinda flickered so I turned it off. It felt like it was heating up ok as I had preheated for about ten minutes with the fan off but the fan just isn't kicking in. Could this be a short or is it new motor time? 99 tahoe with a 5.7 Thanks for any help.

 

[OR VietVet]

Leaning more toward the motor since when you turned it on the dash lights flickered. Get to the motor and supply direct power and check the ground.

 

[ricky68]

When I got off work I checked it again and this time it worked -on high only. I replaced the switch summer before last . Could it be bad again?

 

[OR VietVet]

Is likely the blower motor resistor that controls all the fan speeds. They will either go completely out or stuck at high fan only.

 

[steelcityk9cop]

I second the blower motor resistor. Easy fix.. lots of videos on YouTube and the part is available at your local auto parts place.

Sent from my KFTT using Tapatalk

 

[ricky68]

And here I was thinking I had nothing to do on my day off this weekend lol....Thanks for the help guys. I guess I'll pick one up today. They aren't to expensive.

 

[jerryjoe28]

if high works and the others dont i would say resistor as well ---- on high it buypasses the the resistor and runs powers off its own **** fuse