Quote:
Originally Posted by jsb5717
You might check with your local GM dealership about the stock voltage to the 7way plug. I don't know what year they started reducing voltage since they use LED lights throughout but I've seen discussions about needing a special adapter in order to get 12 volts to the plug for your trailer.
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I was also reading that GM was tweaking their lighting voltages and looks like it started after 2017 or later. Measuring out of my 7 way plug to ground I’m getting 12.8 volts.