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2014 Chevy Silverado
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AC problems

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Old Jul 26, 2011 | 2:21 PM
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Exclamation AC problems

my ac only blows air when i get driving about 40, if im at a red light i get no airflow. any ideas what could be wrong?
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Old Jul 26, 2011 | 10:41 PM
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have you checked the base of the windshield for debris that is cluttering the air intake?
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Old Jul 26, 2011 | 10:54 PM
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yeah, thats not it. im leaning toward the blower motor being broke
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Old Jul 26, 2011 | 10:56 PM
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if the blower motor didnt work you wouldnt be getting any airflow at all at any speed. Your problem is either restricted airflow into the plenum or lack of vacuum needed to draw open the blend doors.
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Old Jul 26, 2011 | 11:24 PM
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its not much air flow, just enough to feel.
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Old Jul 27, 2011 | 3:56 PM
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ah21283,

I am sorry to hear that you are experiencing this issue. Have you had this issue diagnosed at your local Chevrolet dealership?

Thank you,
Elizabeth, Chevrolet Customer Service
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Old Jul 28, 2011 | 6:50 AM
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do you hear the blower motor fan in all of its settings? from low to high? if you cannot hear it it may NOT be blowing OR the resistor block may be toast.
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Old Jul 28, 2011 | 12:31 PM
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i hear nothing from 1 to 5. thats why i think its the blower motor
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Old Jul 28, 2011 | 12:34 PM
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is there any way to know if its the resistor? or do i just have to buy a new one and see?
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Old Jul 28, 2011 | 1:57 PM
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Originally Posted by ah21283
is there any way to know if its the resistor? or do i just have to buy a new one and see?
What I'd suggest is apply 12 volts directly to the motor, if it dosen't come on, either the motor or a ground issue
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