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DESCRIPTION
This 2026 GMC Sierra 1500 4WD AT4 Duramax Crew Cab is an off-road pickup engineered to deliver heavy-duty diesel towing capability alongside top-tier luxury. Key Specifications Features Engine Drivetrain: Powered by the 3.0L Duramax Turbo-Diesel I6 engine (305 hp and 495 lb-ft of low-end torque) paired with a 10-speed automatic transmission, 2-speed Autotrac transfer case, auto-locking rear differential, and a 2-inch factory suspension lift with Rancho monotube shocks. AT4 Premium Package: Combines high-end creature comforts and convenience upgrades, including a power sunroof, rear sliding power window, universal home remote, and adaptive cruise control. AT4 Preferred Technology Packages: Upgrades the cabin experience with a 15-inch diagonal multicolor Head-Up Display, Rear Camera Mirror, heated/ventilated perforated leather front seats, heated rear seats, and a Bose Premium Audio system. Utility Trailering: Outfitted with the six-function GMC MultiPro Tailgate, spray-on bedliner, integrated trailer brake controller, and the ProGrade Trailering System featuring Hitch View and In-Vehicle Trailering Apps. Safety Driver Assistance: Fully equipped with GMC Pro Safety, HD Surround Vision, Front and Rear Park Assist, Trailer Side Blind Zone Alert, and Rear Pedestrian Alert. Upgrade to Professional Grade at Tuck s Trucks GMC.