2026 GMC Sierra 2500HD

The 2026 GMC Sierra 2500 HD comes in several trims, each with its own distinctive features designed for different needs. The Pro trim is a practical choice for those who need a tough, no-nonsense truck that prioritizes utility over luxury. It comes equipped with basic features such as durable vinyl flooring and essential seating for those focused on performance. Moving up to the SLE trim adds additional comfort and technology, including cloth seating, a 13.4-inch infotainment touchscreen with Google built-in, and the EZ Lift tailgate for convenience. The SLT trim takes it further, adding perforated leather upholstery, power-adjustable heated front seats, and the ProGrade Trailering System to enhance towing capabilities. For those looking for off-road performance, the AT4 trim offers off-road suspension with Rancho shocks, skid plates, and 20-inch gloss black wheels with all-terrain tires, perfect for tackling the toughest trails. The Denali trim focuses on luxury with chrome accents, 20-inch ultra-bright machined wheels, Forge leather seating, and a premium sound system. New for 2026, the AT4X trim is the ultimate off-road option, featuring 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 the next level with full-grain leather seating with massage functionality, open-pore wood trim, a signature Vader Chrome grille, and the powerful Duramax diesel engine standard, offering the ultimate blend of performance and refinement.

The 2026 Sierra 2500 HD offers two powerful engine options. The 6.6L V8 gas engine produces 401 horsepower and 464 lb-ft of torque, providing solid performance for daily tasks and hauling. For those requiring more power, the 6.6L Duramax Turbo-Diesel V8 delivers 470 horsepower and 975 lb-ft of torque, ideal for heavy-duty hauling and towing. Both engines are paired with the Allison® 10-speed automatic transmission, ensuring smooth performance. Available in 2WD or 4WD, this truck offers the versatility needed for varying driving conditions.

The 2026 GMC Sierra 2500 HD excels in towing and hauling. The Duramax Diesel engine can tow 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 offers up to 16,000 lbs of conventional towing capacity, with greater towing potential using a fifth-wheel or gooseneck. The truck’s Trailer Sway Control and Integrated Trailer Brake Controller ensure stability and safety when hauling heavy loads. Its advanced suspension system provides a smooth ride, even when fully loaded, while precise steering makes handling easy on both highways and off-road trails.

Inside, the 2026 Sierra 2500 HD is both functional and luxurious. The SLT, AT4, and Denali trims feature leather seating, offering durability and comfort. The Denali Ultimate trim elevates luxury with full-grain leather seating and a massage function for added comfort. The truck is equipped with a 13.4-inch touchscreen that supports Apple CarPlay®, Android Auto™, and Google built-in for seamless connectivity. For a superior audio experience, the Bose® premium sound system is available. The cabin offers plenty of space for passengers, and the MultiPro Tailgate adds versatility for cargo needs.

The 2026 GMC Sierra 2500 HD is equipped with a robust suite of safety features. The GMC Pro Safety suite is 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 provides additional camera views and an in-vehicle app for trailer management. Higher trims offer optional 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 vehicle’s surroundings for enhanced safety when maneuvering in tight spaces.