My blower motor won't turn on.

2005 GMC SIERRA
140,000 MILES
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HALLB
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  • 2 POSTS
It all started when I change the Tempurature control resistor. Then my blower motor went out three days later. I replaced the motor, three days now the blower motor will not come on . I have checked the blower motor using a battery source and it checks good. I have check the resitor and it checks good.
Can you help me?

Brian
Jan 30, 2012 at 7:03 PM
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CADIEMAN
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follow the motor power wire to the blower motor module in the top of the a/c case and replace it.
Jan 30, 2012 at 7:36 PM
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HALLB
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I don't have a module in that case all I have is a 40 amph fuse and it checks good also.
I also foregot to tell you that there is some current going the blower motor sometimes but very little as the motor will turn about an inch then stop and the sometimes it will turn on.
Jan 30, 2012 at 8:20 PM
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CADIEMAN
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U WILL NEED TO CHECK THE VOLTAGE ON THE POWER WIRE.YOU WILL NEED TO CHECK THE GROUND.the resister controls the motor by toggling the ground.
Jan 30, 2012 at 9:58 PM