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Blower motor isn't the problem, but something surely is!

My blower motor works fine when I take it out. And test in on the power source. But when it's screwed in and hooked up it catches on something.

I replaced it with a new one, but sounded like it was catching on something, and it wouldn't turn. When I got smart enough to test the old one, and found that it actually did work I put the old one back in. When turned the heater on, I heard a loud clunk noise, and upon inspection the blades had completely broke off. I checked the hole for anything like a mouse or something, but it was completely clear. It's like something is out of line.

I also noticed a small scrape where it looked as if the top of the drum had etched into the surrounding plastic.

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  • joshbusiness Feb 07, 2010

    I have it mounted the only way it can go. There's a short rubber hose that has to hook to it. Any other way that wouldn't reach. :(



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  • 34 Answers

The blower on most gm cars is clocked a certain way if you get it turned wrong the blower assy will hit the blower housing try to mount it different.

Posted on Feb 07, 2010


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Thanks for using FixYa. The possible causes due to which the blower is not working normally are fuse, blower resistor or a bad blower motor. Test the voltage at the blower with a test light. Please check the motor relay switch fuse under the dashboard. Use a multi meter to measure ohms for continuity. If these are fine, bypass the blower motor relay switch to make sure blower motor is running fine. Motor relay switch is right next to radiator fan relay switch under the hood. Pull out the blower motor relay switch to see 4 female pin holes. Test the relay switch using a 12 volts power source and a multi meter to measure continuity. If fan works after jumping the pin holes, then blower motor is fine but relay switch may be faulty. You may also need to replace the blower motor resistor. If still the problem persists, then you need to replace the blower motor.

Please do rate the solution and revert for further assistance.


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