Pros can’t be confined. Not with nearly 4 million square miles of the U.S. begging to be explored. The Next Generation Sierra Heavy Duty invites you to pull your world with you. Get out there in the premium-packed Sierra HD Denali or for road trips without roads, the First Ever Sierra HD AT4. Go explore the world—without leaving yours behind.
Experience the heavy-duty truck for you—the Next Generation 2020 GMC Sierra Heavy Duty.
Sierra Heavy Duty’s refined and expansive cabin offers advanced, thoughtfully placed technology to help ensure your ride is smooth and smart.
The First Ever Sierra HD AT4 truck features rugged exterior stylings that match its off-road performance.
After removing the conventional hitch, the inner gate folds into a large step for easy entry and exit from the box (step holds up to 375 lbs).