I had the CAM Module in my Trailer for the Carlisle Pump to work with my 2011 GM. When I upgraded to a 2018 GM I was able to remove the CAM Module and works fine. So it sounds like for what ever reason GM has taken away the ability for the Integrated Brake Controller to sense the different resistance between Electric Magnetic Brakes and a Electronic Hydraulic Pump.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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