New 2026 Gmc Sierra 3500 HD AT4

Built for the wide-open ranch, field and feed-lot routine meet the heavy-duty power you need in the heart of the Panhandle and beyond. Out here where you're hauling feed, livestock trailers, hay bales or moving gear from pasture to pasture, the Sierra 3500HD AT4 stands tall. Picture pulling up to the cattle pens or the grain bins near Dalhart or Amarillo in that bold, rugged AT4 trim ready for whatever your land demands. With a full-size heavy-duty chassis, trailering hardware and a serious diesel or big V-8 powerplant, this truck won't hesitate when you hitch up the gooseneck or roll into the yard after a long day.