Oldphart50

Thanks, I will check out my ground, sounds reasonable

I’m having the same issue on a 2021 Silverado LTZ. My boat trailer worked a while ago, as did a utility trailer. But both now show “no trailer connection “ on DIC. I’ve cleaned contacts on truck and connector and tried two different connectors. Has GM or any body found a resolution to this issue, it apppears to be a reoccurring problem.