Question about 2000 GMC New Sierra 1500

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The heater control in my 1994 GMC ierra 1500 4X4 truck just flashes arrows all the way across the heat setting and will not heat the truck now. Unfortunately the air conditioner won't go off so the heater can work. Help

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  • Ronny Bennett Sr.
    Ronny Bennett Sr. May 11, 2010

    Have you disconected the battery to reset the ac control?94 gmc right? not a 2000 gmc?witch one?

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  • GMC Master
  • 6,826 Answers

Try to disconect the battery cable(negative) for about 15 seconds to reset the ac/heater control.

Posted on Oct 06, 2009

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