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2003 Chevrolet Silverado 1500 HD Question: my a/c blows out the defrost nomatter what mode its in

 

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Visitor, Henderson, NV, April 10, 2010, 20:08

no check engien light is on .i did just put a k&n air cool filter

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  • Answer #1

    April 11, 2010, 16:14
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     Master

    This is the default for when there is a problem with your A/C system . It is a safety state so you will have a defrosted windshield and usually there is heat in the defrost air as well.

    here are some shops to help you diagnose your truck http://repairpal.com/directory?address=89011&car_brand_names=Chevrolet

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