[greygoose]

Rear suspensions on the Silverado 1500 even with a standard tow package is too soft and not suitable even at the recommended weights. The result is a lot of swaying and porpoising while towing despite being well within limits and using a weight distribution hitch. I resolved this issue by beefing up my rear suspension with extra leaves to reduce rear end sag. I have the LM2 Duramax which pulls well - uphill, downhill or level.

Good point.... I have a buddy who has a 2020 Silverado and he added a leaf to the rear springs. it made a night and day difference towing his travel trailer, and the unloaded ride was only a little stiffer.