Come see why driving a GMC isn't just transportation—it's an upgrade to everything you expect on the road.

– Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque
– 10-Speed Automatic transmission with 4WD
– AT4 Premium Plus Package with power sunroof and Technology Package
– Power-Retractable Black Assist Steps with LED lighting
– Gooseneck/5th Wheel Prep Package for serious towing capability
– Bose Premium 7-Speaker Sound System with SiriusXM
– Apple CarPlay

nd Android Auto compatibility
– Multicolor 15" Head-Up Display
– HD Surround Vision with Bed View Camera and Trailer Camera Provisions
– Heated and Ventilated front seats with 10-way power adjustment
– Wireless Charging and Wireless Phone Projection
– Automatic Emergency Braking with Forward Collision Alert
– Lane Departure Warning and Rear Cross Traffic Alert
– OnStar One for three years plus three years of SiriusXM

The 2026 GMC Sierra 2500HD AT4 represents serious capability in a package designed for drivers who demand the best. This Volcanic Red Tintcoat truck arrives with the legendary Duramax diesel engine, delivering the kind of power and torque that handles demanding jobs and long-distance hauling with equal confidence. The 10-speed automatic transmission paired with full-time 4WD ensures smooth operation in virtually any condition.

Inside the cab, you'll find an environment crafted for comfort and control. The power sunroof floods the interior with light, while the Bose audio system transforms every drive into an immersive experience. Heated and ventilated seats keep you comfortable through changing seasons, and the 15-inch head-up display puts critical information right in your line of sight. The Technology Package integrates Apple CarPlay and Android Auto seamlessly, keeping you connected without distraction.

This AT4 is engineered for those who need to work. The Gooseneck/5th Wheel Prep Package provides the foundation for serious towing, while the Hitch Package adds a gooseneck ball and chain tiedown kit. The bed features a spray-on bedliner with GMC logo protection, and the power-retractable assist steps with integrated LED lighting make entry and exit effortless. The high-clearance step and X31 Off-Road Package demonstrate the truck's off-road readiness.

Safety technology integrates throughout the vehicle. Ultrasonic front and rear park assist, HD Surround Vision with multiple camera provisions, and the bed view camera system provide visibility in tight situations. Automatic emergency braking, forward collision alert, and rear cross traffic alert work together to help protect you and your cargo. The safety alert seat provides additional feedback during critical moments.

Convenience features enhance every journey. The wireless charging pad powers your phone without cables, while the in-vehicle trailering system app puts control in your hands. Three years of OnStar One service and three years of SiriusXM keep you connected and entertained. The 220-amp alternator and engine block heater ensure reliable starting in demanding conditions.

At the end of the day, the right vehicle doesn't just get you where you're going—it changes how you feel getting there. That's exactly what GMC delivers. Smooth, stylish, and packed with features you'll appreciate every single drive.

Don't just take our word for it—come experience it for yourself. Stop by today, take a seat behind the wheel, and see why so many drivers are making the switch to GMC. Your next upgrade is waiting. Price includes all applicable rebates:$1000 - Buick & GMC Consumer Cash Program. Exp. 08/03/2026