Everybody is talking about the new 2020 GMC Sierra 2500HD AT4! Great looking truck with some great looking features! Off-road suspension with Rancho shocks, skid plates and all-terrain tires. Maximum conventional trailering capacity, Maximum fifth-wheel/gooseneck rating of up to 18,500 lbs. Check out the 2020 GMC Sierra 2500 HD AT4 today!