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Re: Yet another GMC build
a buddy with a vintage air in a square body recently said something i hadn't thought of yet. the aftermarket HVAC's aren't set up for a fresh air draw, just the cabin recirculation. if you start getting too much moisture in the cabin it'll just keep pumping it onto the cold window until you open a window for a quick air change-out.
i've been wrestling with this and how to make a fresh air duct, with a swappable vent to recirculation. but then i think i never turn on recirc, so i should probably just draw outside air all the time.
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