Question about 1999 GMC Suburban

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AC panel messed up compressor doesn't come on.

I have a 1999 Suburban the AC control switch was temperemental and one would have to twist the selector knob back and forth and press the "ac" button off and on to engage the compressor. Now it wont engage at all. I suspect the AC control panel on the dash is the problem and it has nothing to do with the compressor. Does this sound right or? If it is the AC panel, how difficult is it to replace? Can a shadetree mechanic do it or is it best handled by a repair shop?

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  • mandah Mar 07, 2009

    what should the output voltage be at the compressor connector be? If I get nothing (I have a touchy control panel), is it safe to assume that that is the problem? Thanks

  • yodaman357 May 11, 2010

    I'm not sure without testing, but I can tell you that it is very easy to change the control panel. If you need a quick run through I can help.

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Check the fuse first then check the wiring inside then that is OK then check the wire on the compressor it self, its a connector might have to pull  it off and then on. pulling off the compressor is a big deal its lines are a sealed system, the refrigerant lines are under pressure

Posted on Jan 10, 2009

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