2026 GMC Sierra 2500HD

The 2026 Sierra 2500HD offers a range of trims to suit every driver’s needs. The SLE trim makes a powerful first impression with its bold GMC grille and strong, muscular proportions. The SLT adds a touch of class with chrome accents and premium finishes, balancing rugged capability with refined style. For those who love to venture off the beaten path, the AT4 features a 2-inch factory lift, skid plates, and rugged 20-inch all-terrain tires—perfect for tackling Michigan's toughest trails. The AT4X goes further, delivering extreme off-road capabilities with Multimatic DSSV™ dampers, front and rear electronic locking differentials, and an off-road-tuned suspension that takes off-roading to a whole new level. The Denali trim is the epitome of luxury, offering a distinctive chrome grille, polished 20-inch wheels, and chrome mirror caps. Finally, the Denali Ultimate is the most luxurious Sierra HD, featuring exclusive Vader Chrome finishes, 22-inch wheels, a power sunroof, and power-assist steps, making every drive feel like a statement of power.

Under the hood, the 2026 Sierra 2500HD offers two powerful engine options. The standard 6.6L V8 gas engine produces 401 horsepower and 464 lb-ft of torque, paired with the durable Allison® 10-speed automatic transmission for smooth shifting and responsive acceleration. For those seeking the ultimate in towing performance, the available 6.6L Duramax® Turbo-Diesel V8 cranks out 470 horsepower and a staggering 975 lb-ft of torque, delivering unmatched hauling capabilities. With the right setup, the Sierra 2500HD can tow up to 22,390 lbs., making it perfect for work or play in Michigan and beyond.

Every Sierra 2500HD is engineered for strength, precision, and stability. A high-strength, fully boxed steel frame and independent front suspension offer a smooth ride on highways or job sites. The AT4 and AT4X trims come equipped with Hill Descent Control, a 2-speed transfer case, and terrain-selectable drive modes, ensuring excellent control in any environment. Meanwhile, the Denali and Denali Ultimate trims feature Adaptive Ride Control, adjusting damping in real-time for a smooth, controlled ride. Advanced technologies such as Digital Variable Steering Assist and Automatic Grade Braking enhance towing control, whether you're navigating steep grades or winding roads.

Inside, the 2026 Sierra 2500HD combines durability with luxury. The spacious cabin is built with high-quality materials and advanced insulation for a quiet and comfortable ride. The centerpiece is GMC's next-generation infotainment system, which includes a 13.4-inch diagonal center touchscreen and a 12.3-inch digital driver display. Standard features include wireless Apple CarPlay®, Android Auto™, and Google built-in functionality. For audiophiles, an available Bose® premium sound system offers an immersive listening experience. The AT4X trim features exclusive touches like Obsidian Rush interior trim, Vader Chrome accents, and full-grain leather seating, while the Denali Ultimate elevates the experience with Alpine Umber leather upholstery, open-pore Paldao wood trim, and topographic map embossing of Mount Denali on the dashboard.

The 2026 Sierra 2500HD is designed with safety in mind, offering GMC Pro Safety as standard. This package includes Automatic Emergency Braking, Forward Collision Alert, Lane Departure Warning, Front Pedestrian Braking, IntelliBeam® auto high beams, and a Following Distance Indicator. For even greater peace of mind, available upgrades like GMC Pro Safety Plus, Adaptive Cruise Control, Rear Cross Traffic Braking, and HD Surround Vision further enhance your awareness of your surroundings. When towing, features like Trailer Sway Control, Hill Start Assist, and the Transparent Trailer View system make handling your load easier than ever. For the ultimate in convenience, the Denali Ultimate offers Super Cruise®—a hands-free driving system that allows for hands-free driving on compatible roads, even while towing.