2026 GMC Sierra 2500HD

The 2026 GMC Sierra 2500HD lineup offers several trims, each designed to meet different needs. The SLE trim features GMC’s signature grille and strong proportions, setting a bold foundation for performance. The SLT trim adds chrome accents and premium finishes, balancing strength with sophistication.

For off-road enthusiasts, the AT4 trim is equipped with a 2-inch factory lift, skid plates, and 20-inch all-terrain tires, ensuring rugged confidence on Alabama backroads and beyond. The AT4X trim takes off-road performance to the next level with Multimatic DSSV™ dampers, front and rear electronic locking differentials, and an off-road-tuned suspension, providing extreme capability and luxury comfort.

The Denali trim brings unmatched craftsmanship, featuring a chrome grille, 20-inch polished wheels, and refined exterior details. At the top of the range, the Denali Ultimate trim raises the bar with exclusive Vader Chrome finishes, 22-inch wheels, and a power sunroof, offering the ultimate in luxury and performance.

The 2026 GMC Sierra 2500HD is available with two powerhouse V8 engine options. The standard 6.6L V8 engine produces 401 hp and 464 lbs.-ft. of torque, delivering confident power for daily driving and towing needs. For those who demand more, the 6.2L V8 engine offers 420 hp and 460 lbs.-ft. of torque, providing unmatched acceleration and towing performance.

Both engines are paired with the legendary Allison® 10-speed automatic transmission, ensuring smooth shifts and responsive power delivery. With a towing capacity of up to 22,390 lbs. when properly equipped, the Sierra 2500HD can handle trailers, boats, and other heavy gear, making it ideal for work or recreation around Vestavia Hills, Birmingham, and beyond.

The 2026 GMC Sierra 2500HD is designed to offer both strength and precision. Its fully boxed high-strength steel frame and independent front suspension deliver stable handling and a smooth ride, whether you're on highways or job sites.

The AT4 and AT4X trims feature Hill Descent Control, a 2-speed transfer case, and terrain-selectable drive modes, allowing the truck to adapt traction and throttle response to various conditions. The Denali and Denali Ultimate trims include Adaptive Ride Control, continuously adjusting damping to ensure a composed, refined ride.

Inside, the 2026 GMC Sierra 2500HD combines durability with luxury. The cabin features high-quality materials, ample space, and advanced insulation for a quiet, comfortable ride. The centerpiece is GMC’s next-generation infotainment system, with a 13.4-inch touchscreen and a 12.3-inch digital driver display that provides easy access to navigation, apps, and key information.

Wireless Apple CarPlay®, Android Auto™, and Google built-in come standard, ensuring seamless connectivity for drivers and passengers. The AT4X offers exclusive interior details, including Obsidian Rush trim and full-grain leather seating, while the Denali Ultimate features Alpine Umber full-grain leather, open-pore Paldao wood, and the unique topographic map embossing of Mount Denali on the dashboard.

With flat-folding second- and third-row seats, the Sierra 2500HD offers impressive cargo capacity, ideal for hauling everything from gear to equipment for adventures or work.

The 2026 GMC Sierra 2500HD is equipped with the GMC Pro Safety suite, which includes Automatic Emergency Braking, Forward Collision Alert, Lane Keep Assist with Lane Departure Warning, and IntelliBeam® auto high beams, providing peace of mind for everyday driving.

For added security, available upgrades like Adaptive Cruise Control, HD Surround Vision, Rear Cross Traffic Alert, and Enhanced Automatic Parking Assist provide enhanced situational awareness, especially when maneuvering or towing. The Sierra 2500HD also comes with features like Trailer Sway Control and Hill Start Assist to help manage towing more easily. The Denali Ultimate includes Super Cruise®, GMC’s advanced hands-free driving system for compatible roads, perfect for long highway trips.