Key Features of the 2026 GMC Sierra 2500 HD

Duramax® 6.6L Turbo-Diesel V8

The available Duramax® 6.6L Turbo-Diesel V8 pairs with a 10-speed automatic transmission to deliver a commanding 975 lb.-ft. of torque and 470 hp, giving you the strength to move heavy loads with smooth, predictable power. That deep torque well helps at launch, on grades, and during highway merges while towing. It’s engineered for consistency and confidence across varied conditions, and integrates seamlessly with the Sierra HD’s available trailering technologies—like the ProGrade® Trailering System and up to 14 available camera views—to make the most of your power. Whether you’re pulling a large equipment trailer or a fifth-wheel, this powertrain is designed to keep up with the job while helping you maintain composure and control.

MultiPro™ Tailgate

The available MultiPro™ Tailgate is all about smarter access and versatility. With multiple configurations, it transforms the bed into a customizable work surface, a step for easier entry, and a practical way to stabilize longer cargo. Pair it with the available MultiPro Tailgate Audio System by Kicker® to turn the truck into a tailgate-ready workstation or gathering spot. Combine this with best-in-class HD cargo bed volume and you’ll find the Sierra 2500 HD’s bed area is more than a box—it’s a well-considered workspace. From quick loading to tool organization, every detail is designed to save you time and effort while protecting your equipment.

ProGrade® Trailering System with In-Vehicle Trailering App

Available ProGrade® Trailering System brings a suite of intelligent features together so you can tow with clarity and composure. The In-Vehicle Trailering App can streamline pre-departure checklists, track trailer mileage, and monitor key metrics. Add available Adaptive Cruise Control with trailering to help maintain gaps more confidently when hauling. The system’s integration with available camera views—like Hitch Guidance and Transparent Trailer View—further reduces guesswork, making solo hookups and tight back-ins feel more natural. It’s a smart approach that elevates driver awareness and helps protect both your cargo and your schedule.

Up to 14 Available Camera Views with HD Surround Vision

Visibility is capability. With up to 14 available camera views, including HD Surround Vision and Transparent Trailer View, the Sierra 2500 HD helps you see more of what matters. The bird’s-eye perspectives can assist with lane placement, tight parking, and obstacle avoidance. Hitch-view and bed-view angles simplify alignment and cargo checks, while additional trailer-angle views can improve low-speed maneuvering confidence. For drivers moving between worksites or navigating crowded areas, this camera system offers a practical advantage—turning what used to be blind spots into useful, confidence-inspiring information.

13.4" Diagonal Center Touchscreen and 12.3" Diagonal Digital Driver Information Center

Inside, the Sierra HD centers on an available 13.4" diagonal infotainment display and a 12.3" diagonal digital Driver Information Center to keep navigation, audio, trailering, and key vehicle data at your fingertips. Wireless Apple CarPlay® and wireless Android Auto™ compatibility make it easy to bring your daily apps along and keep cords out of the cabin. Available 15" diagonal Head-Up Display adds another layer of at-a-glance awareness. Across trims, you’ll find premium materials and thoughtful ergonomics—whether it’s the Denali’s authentic wood and Forge perforated leather seating surfaces, AT4X’s Obsidian Rush interior, or the SLT’s upscale appointments—that elevate the drive without compromising utility.