Used 2020 Gmc Sierra AT4

Behold the 2020 GMC Sierra 3500HD AT4: Not just a truck, but a rolling fortress built for the frontier of heavy-duty capability. This is the rig that redefines 'overkill' and makes it look absolutely chiseled. Dressed in the aggressive, trail-ready AT4 trim, this Crew Cab commands respect without saying a word. Its lifted stance, bespoke dark chrome accents, and distinct red recovery hooks signal that it’s ready to leave the pavement far behind. Under the muscular, functional hood beats the heart of a workhorse—the legendary Duramax 6.6L V8 Turbo-Diesel engine, paired seamlessly with the revolutionary 10-speed Allison transmission. Whether you're hauling a fifth-wheel camper up a mountain pass or pulling a horse trailer through mud, the sheer, effortless torque is nothing short of addictive.