2026 GMC Sierra 2500

The 2026 GMC Sierra 2500 HD lineup offers a well-rounded selection of trims, catering to both utilitarian and luxurious preferences. The Pro trim serves as a robust workhorse, featuring basic but durable elements such as vinyl flooring and functional seating. For those looking for added convenience and tech, the SLE trim upgrades to a 13.4-inch touchscreen and the EZ Lift tailgate for enhanced ease of use. The SLT trim focuses on comfort with leather seating, heated front seats, and the ProGrade Trailering System for added towing capability. Off-road enthusiasts can opt for the AT4 trim, which boasts upgraded suspension, skid plates, and off-road tires for tough terrain. Meanwhile, the Denali trim takes luxury to new heights with premium leather upholstery, a top-tier audio system, and chrome exterior accents. The newly introduced AT4X trim is engineered for the ultimate off-road experience, equipped with a suspension lift and mud-terrain tires for the toughest trails. Lastly, the Denali Ultimate trim is the pinnacle of luxury, featuring full-grain leather, a signature grille, and the option of the powerful Duramax diesel engine for an unparalleled blend of refinement and power.

For the 2026 Sierra 2500 HD, GMC offers two engines designed to cater to varying needs. The standard 6.6L V8 gasoline engine delivers 401 horsepower and 464 lb-ft of torque, offering impressive performance for everyday tasks and moderate towing. The 6.6L Duramax Turbo-Diesel V8 option is ideal for those requiring substantial power, producing 470 horsepower and a staggering 975 lb-ft of torque, making it the go-to choice for serious hauling. Both engines are paired with the Allison® 10-speed automatic transmission, which ensures smooth and efficient shifting. Additionally, the 2WD or 4WD configurations offer versatility, allowing the truck to adapt to various road conditions and challenges.

The 2026 Sierra 2500 HD is built to handle tough hauling and towing jobs. With the Duramax Diesel engine, it can tow up to 22,500 pounds with a gooseneck or fifth-wheel trailer, and 20,000 pounds with a conventional hitch. The 6.6L gas engine offers a towing capacity of 16,000 pounds when using a conventional trailer setup, with additional capacity for fifth-wheel and gooseneck towing. To enhance stability while towing, the Sierra 2500 HD comes with Trailer Sway Control and the Integrated Trailer Brake Controller. The truck’s suspension system ensures a smooth ride, even when loaded, and the truck handles easily on both highways and rougher terrain.

The 2026 Sierra 2500 HD offers a comfortable and spacious interior, with options for leather seating in the SLT, AT4, and Denali trims. The Denali Ultimate trim upgrades the seating to full-grain leather with massage functionality for the front seats. The 13.4-inch touchscreen offers seamless integration with Apple CarPlay®, Android Auto™, and Google built-in. For audio, the available Bose® premium sound system provides clear, high-quality sound. The cabin provides ample space for passengers, and the MultiPro Tailgate allows for greater versatility when handling cargo.

The 2026 GMC Sierra 2500 HD is packed with advanced safety technologies to ensure both driver and passenger security. The GMC Pro Safety suite comes standard, offering features such as Forward Collision Alert, Automatic Emergency Braking, Lane Departure Warning, and a Rear Vision Camera System to assist in everyday driving. For those who tow frequently, the ProGrade™ Trailering System offers enhanced trailer visibility with additional camera views and trailer management tools. Higher trims provide additional options like Trailer Blind-Spot Monitoring, Adaptive Cruise Control with Trailering, and Rear Cross-Traffic Alert for extra awareness on the road. Available on the Denali and Denali Ultimate trims, the HD Surround Vision camera system provides a bird’s-eye view of the vehicle’s surroundings, ensuring safe and easy maneuvering in tight spaces.