Front Blower motor not working

2003 PONTIAC MONTANA

240,000 MILES • 6 CYL • FWD • AUTOMATIC

MARCPRO

MEMBER
1 POST

My front blower motor stopped working suddenly. Does not work at any speeds. A/C is working, I get cold air coming out of the vents when I'm on the highway. All fuses check out OK, both on passenger side panel and on right hand side fuse block under the hood.

Rear blower works fine.

Thanks in advance for troubleshooting advice.

EDIT: 24 hours after writing the above, blower motor works again, all speeds work fine. I did absolutely nothing to fix it so far. Seems like an intermittent problem. I would still like to look at a troubleshooting tree to pinpoint the problem. Thanks for all the replies so far!

Jul 9, 2010 at 12:22 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

Hello,

This sounds like the blower motor when out but to be sure lets run down this guide which shows how to test and replace the blower motor with diagrams below for how it can be done on your car.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

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

Cheers

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Professional Diagram for 2CarPros Members
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Jul 9, 2010 at 1:42 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

Thank you so much for this post it was the blower motor for me cost $56.00 all fixed!

Aug 17, 2018 at 2:02 PM

KRYBABY

MEMBER
1 POST

The front fan motor doesn't work but the back fan motor works fine. I can fill air when driving down highway.

Aug 17, 2018 at 2:03 PM (Merged)

HMAC300

✓ASE Certified Mechanic
48,601 POSTS

check relay and resistor in pics I tmay be the control though which would have to be scanned by a pro.

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Professional Diagram for 2CarPros Members
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Aug 17, 2018 at 2:03 PM (Merged)

NDWIG

MEMBER
1 POST

My A/C and heater blower has stopped working on settings 1, 2, and 3 only. It still works fine on settings 4 and 5 on the dashboard controller dial. Can this be fixed?

Aug 17, 2018 at 2:03 PM (Merged)

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Chances are the blower motor resister is bad. Have you tried replacing that? There is also a relay that can cause this, but my first guess is the resister.

Aug 17, 2018 at 2:03 PM (Merged)

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