Front blowers for heat not working

MARK IACOPELLI

MEMBER
2007 CHEVROLET UPLANDER
160,000 MILES

My front blowers for the cabin don’t work. I was told by a more mechanically inclined friend that it’s probably the blower motor of resistor. I replaced the blower motor but didn’t work. Occasionally if I hit a bump just right the blowers kick on. The rear cabin blowers work fine. Could it still be the resistor? When they do kick on they seem to change speeds fine.

Sunday, October 27th, 2019 AT 11:13 AM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
54,137 POSTS

Hello,

You replaced the blower motor correct? It sounds like it is going bad. To be sure lets use this guide to see if it is getting power/ground:

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

This blower wiring will show you how the system works. There is a blower relay that needs to be checked as well.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here is the location below. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Images (Click to make bigger)

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Monday, October 28th, 2019 AT 6:05 PM

MARK IACOPELLI

MEMBER
2 POSTS

Yes, I replaced the blower motor thinking that was the problem. In hindsight I this it was fine. I will go through the steps you suggested an see what I find and let you know. Winter is coming and I am not prepared.

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Tuesday, October 29th, 2019 AT 10:07 AM

KEN L