The 2026 Sierra 2500HD offers a lineup of impressive powertrain options designed to meet a wide range of work and towing needs. A standard 6.6-liter V8 gasoline engine produces 401 horsepower and 464 pound-feet of torque, paired with a six-speed automatic transmission. For drivers who need maximum pulling power, the available 6.6-liter Duramax turbodiesel V8 delivers 470 horsepower and a commanding 975 pound-feet of torque, mated to a 10-speed Allison automatic transmission. Max conventional towing capacity reaches up to 20,000 pounds, making this Sierra HD a legitimate workhorse.

Step inside the 2026 Sierra 2500HD and you'll find a cabin that balances rugged functionality with genuine comfort. Available seating configurations include regular cab, double cab, and crew cab layouts, giving you the flexibility to accommodate your crew or maximize storage. Higher trim levels like the SLT and Denali bring premium touches such as leather-appointed seating, heated and ventilated front seats, and a heated steering wheel. The available MultiPro tailgate adds versatile functionality whether you're on the job or loading up for the weekend.

The 2026 Sierra 2500HD keeps you connected and in control with a robust suite of technology features. The available 13.4-inch diagonal color touchscreen powers the intuitive GMC infotainment system with wireless Apple CarPlay and Android Auto compatibility. Available Super Cruise hands-free driver-assistance technology offers a confidence-inspiring driving experience on compatible highways. The available GMC ProGrade Trailering System includes an in-vehicle trailering app, trailer theft alert, and up to 15 camera views to take the guesswork out of towing.

GMC equips the 2026 Sierra 2500HD with a comprehensive set of safety and driver-assistance technologies to help keep you protected on and off the job. Available features include Forward Collision Alert, Automatic Emergency Braking, Lane Keep Assist with Lane Departure Warning, and Front Pedestrian Braking. The available HD Surround Vision camera system provides a bird's-eye view of your surroundings, particularly valuable when maneuvering a loaded trailer or navigating tight spaces on a work site.

The 2026 GMC Sierra 2500HD is offered across a well-rounded lineup of trims to match your needs and budget. The entry-level Pro delivers essential capability at an accessible starting point. The SLE and SLT step up with added comfort and convenience features, while the AT4 trim brings serious off-road credentials including a factory-lifted suspension, skid plates, and Rancho monotube shocks. At the top of the lineup, the Denali and Denali Ultimate trim levels deliver a luxury truck experience with premium materials, exclusive styling, and advanced technology that rivals many high-end vehicles.

The 2026 GMC Sierra 2500HD is a heavy-duty truck that never asks you to compromise. From its powerful engine options and advanced towing technology to its refined interior and extensive trim lineup, it's purpose-built to take on the toughest tasks while keeping you comfortable every mile of the way. Stop by and explore everything this SierraHD has to offer.