Dabney

I'm the one that originally posted this. I originally said my 2015 duramax works fine with my trailer with LED lights but my 2023 duramax does not. I had my local mom/pop shop look at my trailer and make sure all the grounds were solid. They said they found one that was a little loose and fixed it. Since then, my trailer is working fine with my 2023 Duramax with no adapters. My conclusion is that the design of the older truck was just more forgiving for a not so perfect ground, and the newer trucks need the ground to be perfect. (hopefully that makes sense).