Questions specific to electrical problems.
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When the car is turned on, there is no power to the climate control switches for ac and heat. No lights or sounds at all. Under the hood the pulley belt runs but the compressor clutch does not engage. I've looked at the fuses and relays and found no damage. It seems like there is no power at all to the clutch, fan, or inside controls. When I purchased the car, the seller stated the ac had been "disconnected". I've looked at the wires I can see and none seem to be loose. I'm not sure how to access it any other way. Any help would be appreciated. Is there any way the ac would be disconnected?
If the controls in the dash do not light up or have no power, then there will be no power to the compressor under hood of your Buick. The first thing to do is remove the control panel to see if that is even plugged in.