superdad707

Buy this part; I had the same issue https://www.etrailer.com/Wiring/Tow-Ready/TR20141.html It's because the LED lights do not put enough load on the circuit per the dealer. Thus I started googling around found a way, the above part puts a load on the circuit. I had same problem with my boat/trailer on a 2016 Seaark Easy 200 double axle. I have a 2020 Silverado 2500 HD. If you ask me, it seems freaking dumb when you buy a new truck and it doesn't work like your old one I had a 2017 prior and no issues. With all the trailers going to LED, this seems like a no brainer to me. Come on GM.