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    Cooling fans come on as soon as I turn on the engine; AC won't get cold

    I have a 2017 Yukon Denali. The cooling fans come on as soon as I turn the engine on. I've been trying to find out the problem, but can't get a clear answer. I replaced the thermostat and the cooling temperature sensor. It still didn't fix the problem. I've checked it with the AC being on and...

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