2026 GMC Sierra 2500HD

The 2026 Sierra 2500HD is available in a variety of trims, each offering unique features tailored to different needs. The Pro trim is designed for those seeking a no-frills, work-focused truck, featuring practical elements such as durable vinyl flooring and basic seating for utility-focused use. The SLE trim adds extra comfort with cloth seating, a 13.4-inch infotainment touchscreen with Google built-in, and the convenient EZ Lift tailgate. Moving to the SLT trim, you’ll find enhanced features like perforated leather upholstery, power-adjustable heated front seats, and the ProGrade Trailering System for improved towing capabilities. For those with an off-road mindset, the AT4 trim includes Rancho shocks, skid plates, and 20-inch gloss black wheels with all-terrain tires, making it perfect for the toughest environments. The Denali trim offers refined luxury with chrome accents, 20-inch machined wheels, Forge leather seating, and a premium sound system. New for 2026, the AT4X trim provides ultimate off-road capability with a 1.5-inch factory-installed suspension lift, Multimatic DSSV dampers, and 35-inch mud-terrain tires. Lastly, the Denali Ultimate trim takes luxury to new heights with full-grain leather seating with a massage feature, open-pore wood trim, a signature Vader Chrome grille, and the Duramax diesel engine standard, combining unparalleled performance with luxury.

The 2026 Sierra 2500HD offers two powerful engine options to suit your needs. The 6.6L V8 gas engine generates 401 horsepower and 464 lb-ft of torque, providing robust performance for daily tasks and towing. For those needing more power, the 6.6L Duramax Turbo-Diesel V8 engine delivers 470 horsepower and a massive 975 lb-ft of torque, perfect for heavy-duty hauling and towing. Both engines are paired with the Allison® 10-speed automatic transmission, ensuring smooth and efficient power delivery. The Sierra 2500HD is available in both 2WD and 4WD configurations, providing the versatility required for various driving conditions.

The 2026 GMC Sierra 2500HD is built to handle tough jobs with ease. The Duramax Diesel engine offers a towing capacity of up to 22,500 lbs with a gooseneck or fifth-wheel trailer and 20,000 lbs with a conventional setup. The 6.6L gas engine can tow up to 16,000 lbs with a conventional trailer, and even more with a fifth-wheel or gooseneck. The truck is equipped with Trailer Sway Control and an Integrated Trailer Brake Controller to ensure stability and safety when towing. Its advanced suspension system delivers a smooth ride, even when fully loaded, while precise steering makes handling simple, whether on highways or off-road trails.

The interior of the 2026 Sierra 2500HD combines functionality with luxury. The SLT, AT4, and Denali trims offer leather seating, providing both durability and comfort. The Denali Ultimate trim steps up the luxury with full-grain leather seating and a massage function to enhance comfort on long drives. The truck is equipped with a 13.4-inch touchscreen, supporting Apple CarPlay®, Android Auto™, and Google built-in for seamless connectivity. For premium sound, the available Bose® audio system ensures an exceptional listening experience. The cabin offers plenty of space for passengers, and the MultiPro Tailgate provides versatile cargo space for all your needs.

The 2026 GMC Sierra 2500HD is packed with advanced safety features to keep you and your passengers protected. The GMC Pro Safety suite comes standard, including Forward Collision Alert, Automatic Emergency Braking, Lane Departure Warning, and a Rear Vision Camera System. For those who tow, the ProGrade™ Trailering System offers additional camera views and an in-vehicle app for managing trailers. Higher trims offer optional safety features like Trailer Blind-Spot Monitoring, Adaptive Cruise Control with Trailering, and Rear Cross-Traffic Alert. The HD Surround Vision camera system, available on the Denali and Denali Ultimate trims, provides a bird’s-eye view of the surroundings, making maneuvering in tight spaces safer and easier.