2026 GMC Sierra 2500

Meet the 2026 GMC Sierra 2500HD AT4X, a robust pickup engineered for those who demand capability and sophisticated comfort in one vehicle. This Gray AT4X combines a legendary Duramax 6.6L V8 Turbodiesel with tactical performance features designed to handle demanding work and challenging terrain with confidence.- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque- Adaptive Cruise Control- Android Auto and Apple CarPlay- Backup Camera with HD Surround Vision- Gooseneck/5th Wheel Prep Package- Spray-In Bed Liner with GMC Logo- Moonroof- Remote Start- Bose Premium Series 12-Speaker System with SiriusXM- Heated and Ventilated Leather Front Seats- 16-Way Power Driver and Passenger Seat Adjusters- Wireless Phone Projection and Charging- Multicolor 15'' Head-Up Display- 4WD with 2-Speed Active Transfer Case- Power Sliding Rear Window with DefoggerThe foundation of this Sierra lies in its enginea Duramax turbodiesel paired with a 10-speed automatic transmission and 4WD capabilities. This powertrain delivers the torque needed for substantial towing and hauling tasks while maintaining the efficiency that diesel engines provide. The 2-speed active transfer case enhances off-road performance, and hill descent control assists with challenging descents, making this truck ready for both highway work and rugged terrain.Thoughtfully designed for the professional and enthusiast alike, this AT4X includes the Gooseneck/5th Wheel Prep Package, complete with hitch platform, removable caps, and bed-mounted 7-pin trailer harness. The engine block heater and 220-amp alternator ensure reliable cold-weather operation, while the spray-in bedliner protects your cargo area.Inside, premium touches elevate daily driving. Full grain leather seating with heated and ventilated front seats provides comfort across seasons. The Bose 12-speaker sound system with SiriusXM delivers quality audio, while wireless charging and dual USB ports keep your devices ready. The 15-inch head-up display projects critical information directly into your line of sight, and the remote vehicle starter system means your truck can be warming up before you step outside.Safety receives equal attention through features like automatic emergency braking, forward collision alert, lane departure warning, and ultrasonic park assist on both front and rear. The bed view camera with trailer camera provisions delivers enhanced visibility, while trailer tire pressure monitoring sensors provide peace of mind during towing.Stop by Woody Buick GMC Naperville, an 11-time GM Dealer of the Year and Mark of Excellence recipient, to schedule a test drive! See for yourself why this J.D. Power 2026 Dealer of Excellence is Illinois' #1 Sales Volume Buick GMC destination and Chicagoland's most awarded dealer. Take advantage of our award-winning service and the best incentives around! We have a 2026 GMC Sierra 2500HD on sale for you!