2026 GMC Sierra 2500 HD

Pro is unapologetically functional. It delivers core trailering hardware, durable materials, and a layout built for long workdays. Nothing wasted, nothing missing. SLE is where the Sierra HD starts to feel modern. The larger touchscreen, digital driver display, and expanded camera capability make it far easier to live with daily, especially if towing is part of the routine. SLT brings a noticeable shift in comfort. Heated 10-way power seats, a heated steering wheel, and available ventilated leather surfaces turn the cabin into a place you don’t mind spending hours in. It’s still a work truck—just one that’s easier to live with. AT4 introduces off-road intent. Rancho® shocks, skid plates, and available all-terrain tires give it real capability beyond pavement, while interior finishes like Jet Black with Kalahari accents keep things upscale. AT4X takes that further with a factory lift, Multimatic® DSSV dampers, and 35-inch mud-terrain tires. It’s not just rugged—it’s engineered for difficult terrain, with a more focused setup that feels purpose-built. Denali shifts fully into premium territory. Signature styling, high-end materials, and advanced features create a truck that feels as refined as it is capable. Denali Ultimate sits at the top and doesn’t hold back. Full-grain leather, massaging seats, Bose® premium audio, and exclusive interior finishes turn the Sierra HD into something that feels closer to a luxury SUV—just one that can tow serious weight.

The standard 6.6L V8 gas engine delivers 401 hp and 464 lbs. ft. of torque, paired with a 10-speed automatic transmission that keeps power delivery smooth and consistent. It’s strong, predictable, and well-suited for daily hauling. The available Duramax® 6.6L Turbo-Diesel V8 changes the tone entirely. With 470 hp and 975 lbs. ft. of torque, it delivers the kind of low-end pull that makes heavy loads feel manageable rather than demanding. Capability is the headline. Properly equipped, the Sierra 2500 HD handles up to 22,390 lbs. of towing when properly equipped, supported by a chassis that stays composed under load. The ProGrade® Trailering System plays a major role, integrating an in-vehicle trailering app with up to 14 available camera views. Hitching, reversing, and maneuvering feel far more controlled than you’d expect in a truck of this size.

The cabin scales intelligently across the lineup. Lower trims focus on durability and layout, keeping everything accessible and easy to manage during long workdays. Move up, and the experience changes. SLT and above introduce premium materials, improved seating comfort, and a quieter cabin environment. Denali and Denali Ultimate add authentic wood trim, perforated leather, and available 16-way power seats with massage functionality. Space is generous, with wide seating and practical storage throughout, making the interior feel as much like a mobile workspace as it does a place to relax between jobs.

From SLE upward, the Sierra HD feels fully modern. A 13.4-inch touchscreen and 12.3-inch digital driver display create a clean, high-resolution interface that’s easy to navigate. Wireless Apple CarPlay® and Android Auto™ come standard, while features like a 15-inch head-up display and rear camera mirror improve visibility—especially when towing. The system integrates directly with trailering tools, keeping everything in one place without adding complexity.

Standard features include Forward Collision Alert, Automatic Emergency Braking, and Lane Departure Warning, providing a solid foundation of driver assistance. Higher trims expand that with HD Surround Vision, adaptive cruise control with trailering capability, and advanced camera systems that improve awareness in tight spaces or while towing.