2026 GMC Sierra 2500 HD

The Sierra 2500 HD lineup begins with Pro, a durable work-ready model equipped with the standard 6.6L V8 gas engine, practical interior materials, and integrated trailering technology. SLE adds a more refined cabin with a 13.4-inch GMC Premium Infotainment System, a 12.3-inch Driver Information Center, and expanded camera functionality that simplifies towing and maneuvering. SLT elevates everyday comfort with leather-appointed seating, heated front seats, a heated steering wheel, and the ProGrade® Trailering System, making it an ideal choice for drivers who split their time between work and recreation. AT4 is built for off-road adventures with Rancho® monotube shocks, skid plates, all-terrain tires, and a specially tuned suspension. AT4X takes capability even further by adding Multimatic® DSSV dampers, 35-inch mud-terrain tires, front and rear electronic-locking differentials, and available 16-way power front seats with massage. For buyers seeking luxury, Denali introduces Forge perforated leather seating, authentic wood trim, and advanced driver-assistance technology. Denali Ultimate sits at the top of the lineup with the standard Duramax® 6.6L Turbo-Diesel V8, Alpine Umber full-grain leather, massaging front seats, and a Bose® Premium Audio System.

The standard 6.6L V8 gas engine produces 401 hp and 464 lbs.-ft. of torque, paired with a smooth-shifting Allison® 10-speed automatic transmission. Drivers requiring maximum pulling power can choose the Duramax® 6.6L Turbo-Diesel V8, generating 470 hp and an impressive 975 lbs.-ft. of torque. When properly equipped, the Sierra 2500 HD can tow up to 22,380 lbs., making it well suited for heavy equipment, large campers, and commercial trailers.

Built on a high-strength frame with heavy-duty suspension components, the Sierra 2500 HD remains composed under substantial loads. The available ProGrade® Trailering System offers up to 14 available camera views, including Transparent Trailer View, while available Adaptive Cruise Control with trailering adjusts naturally for changing trailer weights. AT4 and AT4X models add specialized suspension systems and advanced four-wheel-drive capability for confident travel beyond the pavement.

Crew Cab models provide best-in-class front headroom and legroom along with practical storage solutions, including a large center console and under-seat storage compartments. As you move through the lineup, the cabin becomes increasingly upscale with leather-appointed seating, genuine wood trim, heated and ventilated front seats, and premium materials throughout. Denali Ultimate raises the standard with full-grain leather upholstery and available 16-way power front seats with massage.

An available 13.4-inch GMC Premium Infotainment touchscreen and 12.3-inch Driver Information Center create a modern digital cockpit. Wireless Apple CarPlay®, wireless Android Auto™, Google built-in compatibility, available Bose® premium audio, and an available Head-Up Display keep drivers connected while integrated trailering technologies place essential towing information directly within view.

Every 2026 Sierra 2500 HD comes standard with GMC Pro Safety, including Automatic Emergency Braking, Forward Collision Alert, Front Pedestrian Braking, Lane Departure Warning, Following Distance Indicator, and IntelliBeam®. Available HD Surround Vision, Rear Camera Mirror, Blind Zone Steering Assist, Adaptive Cruise Control with trailering, and additional towing-focused driver-assistance technologies provide added confidence whether navigating Yuba City traffic or hauling heavy loads across Northern California.