AC/Heat blower motor not working?

Tiny
WATSTY2
  • MEMBER
  • 2005 CHEVROLET COLORADO
  • 2.8L
  • 4 CYL
  • 2WD
  • MANUAL
  • 95,000 MILES
Heater and A/C started out working only on certain settings then it quit completely. Replaced resistor, blower motor, harnesses, and check fuses. What's my next step? Thinking control panel or maybe a new part is bad.
SPONSORED LINKS
Do you
have the same problem?
Yes
No
Wednesday, May 10th, 2023 AT 7:58 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
I would start by checking the power at fuse #41 under the hood which feeds the blower motor directly. The blower speed is controlled by the fan switch.

Here is a guide to help you test for power at the motor and fuse:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Here is the blower motor wiring so you can see what I am talking about and how the system works. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Wednesday, May 10th, 2023 AT 12:22 PM
Tiny
WATSTY2
  • MEMBER
Thank you! I swapped the #41 fuse, still no power. I will start testing power and see.
Was this
answer
helpful?
Yes
No
Wednesday, May 10th, 2023 AT 12:34 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
Yep, see if you have power to the blower motor. Also, swap the IGN 3 relay to see what happens.
Was this
answer
helpful?
Yes
No
Thursday, May 11th, 2023 AT 9:10 AM

Please login or register to post a reply.

Related Blower Fan Not Working Content

VIEW MORE

Sponsored links