I just finished towing my 2018 Equinox from Tucson AZ. to Lake Havasu City AZ. This was the first tow with the new Chevy. I have a Demco tow plate and tow bar. I choose to install separate bulbs for tail lights and turn signals. I installed a separate 12 V outlet wired directly to my battery for the Brake Buddy.
I followed the Mfg. procedure for flat towing. Easy and tows well, but on arrival at Havasu the battery was flat dead. I have towed a Ford Ranger, Jeep Wrangler and a HHR using the Brake Buddy and had no Battery issues. I am calling Brake buddy tomorrow and the GM to find out what issue needs to be resolved. I may have to run a charge line from the Tiffin. I'll let you know.
Turbo T