My 2023 2.7 is absolutely doing this while towing 6,000 lb camper. It even does it launching on the equivalent of a boat ramp incline, from a dead stop.
Who is the EPA idiot at GM that thinks a 2nd gear launch with 6K is the right programing? You can easily tell this is hard as hell on the drive line components. I have to manually shift to low, then force it to 1st gear to take off.