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  1. J

    99 GMC Yukon a/c

    Ok I was going through the blower control switch wires and a light blue and a brown one were messed with right on the plug in. I have no idea what's next. Please help!!!!!
  2. J

    99 GMC Yukon a/c

    I replaced the switch andand it still does the same. While moving wires around I noticed that the light on a/c button would come on and off now I have to figure out what is causing that. Thank you for your help I have a start on it now.
  3. J

    99 GMC Yukon a/c

    Hello everyone I hope someone can help me. I have a 99 GMC Yukon 5.7. I just bought the truck and am having trouble with a/c. The a/c compressor only kicks on when blower switch is on off as soon as I turn it to low or high the compressor shuts off. I don't understand what's going on. It is very...

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