Thanks for the responses. I called the dealer, the earliest they can see me is July 5th... which is 3 days into my next trip. I'll go check the simple stuff, I forgot the easy stuff like breakers/fuses etc.
The fan was definitely running, but the compressor didn't come on, it didn't even sound like it tried to come on. I did hear the "click" from the thermostat to indicate the temp was right to kick the AC on.
2012 Chevrolet 3500 Duramax CC SRW 4x4, 2013 Sprinter 311BHS, DW, 3 boys, & 2 dogs...
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