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    1999 Chevy Heat/AC Control Problems
    #1
    Charter Member MacGyver's Avatar
    Join Date
    Oct 2008
    Location
    Appleton, Wisconsin. Where we have 2 seasons... winter and road construction
    Posts
    4,120
    I'm having intermittent issues with the heat and A/C controller in my 1999 Silverado:

    • Lights for recirculating and fresh air are both out (one or the other should be on)
    • A/C light stays on and I can't turn it off
    • Rear defrost button doesn't do anything
    • Defrost/dash/floor selector doesn't do anything
    • Temp selector doesn't do anything, all I get is cold air
    • The fan speed control DOES work though

    Sometimes it works normal, sometimes not. Any ideas?? It's still winter here and I need my heat and defrost!!
    Last edited by MacGyver; 02-20-2011 at 03:43 PM.
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