Question about 2007 GMC Sierra 2500HD

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My air conditioner want blow and all fuses are good when traveling at high way speeds it will blow cold but it is the force of the outside wind not the fan motor

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The blower motor needs to be replaced or the resistor. does it blow on high only

Posted on Sep 07, 2010

  • rosas1819 May 24, 2012

    Yes it blows on high only

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It sounds like your AC unit could be overheating or even damaged.

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