2026 GMC Sierra 2500 HD

The 2026 GMC Sierra 2500 HD offers a lineup of powerful engine options designed to handle the most demanding jobs. The available Duramax 6.6-liter turbo-diesel V8 engine produces an impressive 470 horsepower and 975 pound-feet of torque, making it one of the most capable engines in the heavy-duty segment.

A 6.6-liter V8 gasoline engine is also available for drivers who prefer a conventional powertrain. Both engines are paired with an Allison 10-speed automatic transmission, delivering smooth, confident power transfer whether you're on the job site or the open highway. Maximum conventional towing capacity reaches up to 20,000 pounds, and maximum payload can reach up to 4,090 pounds, giving drivers in Waupaca, Wisconsin, the muscle to tackle their toughest tasks.

Step inside the 2026 GMC Sierra 2500 HD and you'll find a cabin that blends rugged durability with genuine comfort. The available leather-appointed seating, heated and ventilated front seats, and heated rear seats create an inviting environment no matter the season. The Sierra HD's MultiPro tailgate system extends functionality beyond the bed, offering six unique configurations for loading, working, and more. Premium materials, thoughtful storage solutions, and available heated steering wheel round out an interior that works as hard as the drivers who rely on it.

The 2026 GMC Sierra 2500 HD equips drivers with an advanced suite of technology designed to keep them connected and in control. The available 13.4-inch diagonal color touchscreen infotainment system delivers a responsive, intuitive interface, while wireless Apple CarPlay and Android Auto compatibility ensure seamless smartphone integration. Available Super Cruise hands-free driver assistance technology provides an added layer of confidence on long hauls.

The available Transparent Trailer View camera system uses multiple cameras to give drivers a clear perspective around their trailer, making backing and maneuvering easier than ever. Wireless charging and available Wi-Fi hotspot capability keep devices powered and connected on every trip.

GMC engineered the 2026 Sierra 2500 HD with a comprehensive array of safety and driver assistance features. Available systems include Forward Collision Alert, Automatic Emergency Braking, Lane Change Alert with Side Blind Zone Alert, and Rear Cross Traffic Alert, all working together to help keep drivers and passengers protected.

The available HD Surround Vision camera system offers a bird's-eye view of the truck's surroundings, which is particularly helpful when maneuvering in tight spaces or on congested job sites. Rear Park Assist and IntelliBeam automatic high-beam headlamps round out a robust safety package that adds confidence on every drive.

The 2026 GMC Sierra 2500 HD is available in a well-rounded lineup of trim levels to match a wide variety of needs and preferences. The Pro serves as the capable and straightforward entry point, delivering solid heavy-duty performance for work-focused buyers. The SLE adds enhanced comfort and connectivity features, while the SLT steps up with more premium interior appointments and technology.

The AT4 brings off-road-ready capability with a two-inch factory suspension lift, skid plates, and all-terrain tires. At the top of the lineup, the Denali and Denali Ultimate trims deliver a luxurious experience with premium leather interiors, advanced technology features, and the distinctive Denali styling cues that set these trucks apart from the rest.

The 2026 GMC Sierra 2500 HD stands as a true expression of what a heavy-duty truck can be — powerful, capable, refined, and loaded with technology. Whether you're drawn to the work-ready Pro or the luxurious Denali Ultimate, there's a Sierra 2500 HD configuration built precisely for your needs. Visit Neuville Motors GMC to explore the full lineup and find the right model for you.