Question about 2002 GMC Yukon XL

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The heater wont blow or turn on when i use the control in the front

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Check blower fan switch if that's working maybe your heater core

Posted on Apr 03, 2014

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Posted on Jan 02, 2017

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NO HEAT. A/C works fine. Air blows but no warmth. blows cold air for front defog and cold air blows when temp cranked high 1-5


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You will need to be more specific ... front heater wont turn on after using the on switch? Heater blows but only warm air ... heater blows cold air .... see what I mean.

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To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
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