The 20k towing is just marketing. With a 1300 lb payload that number is suspect at best. I guess they have the power, weight and brakes, but not the rest. When they can fit the batteries for towing range(solid state) there will be an HD truck and GM has said as much arriving 2035. The Silverado EV is a half ton equivalent, 20k towing capacity or otherwise it’s not designed to pull a goose neck or any other HD equivalent towing. They just wanted to beat 15k or whatever the current BS half ton marketing says now. Truth is bumper towing with a 1500 over 10k pounds now is not a fun experience whatever their marketing says. The Silverado EV has the weight so that will help with highway stability, but the range will be crap so that doesn’t help much. I think it’s safe to say the base 8000 lb towing capacity they advertised for the EV is a realistic approximate of what it can tow and matches the payload rating, the range still won’t be good. no one is gonna be towing cross country with a 20k trailer anytime soon in any EV truck, the charging alone even after they get 300 miles range will be a pita.