The 2026 GMC Sierra 2500HD offers a lineup of powerful engines designed to meet demanding work requirements. The standard engine is a 6.6-liter V8 gasoline engine producing 401 horsepower and 464 pound-feet of torque, paired with a six-speed automatic transmission. Drivers who need maximum pulling power can opt for the available 6.6-liter Duramax turbo-diesel V8, which generates 470 horsepower and an impressive 975 pound-feet of torque, paired with an Allison 10-speed automatic transmission. With available max conventional towing of up to 20,000 pounds and max payload of up to 4,537 pounds, the Sierra 2500HD is engineered to handle the heaviest loads with confidence.

Step inside the 2026 GMC Sierra 2500HD and you'll find a cabin that balances utility with genuine comfort. Higher trim levels offer premium materials like leather-appointed seating, real wood and metallic accents, and ample storage solutions throughout the cabin. The available MultiPro tailgate expands functionality both inside and outside the truck, offering six different configurations for loading, working, and relaxing. Whether you're hauling a crew to a job site or tackling a weekend adventure, the spacious interior provides the room and comfort to make every mile more enjoyable.

The 2026 GMC Sierra 2500HD comes equipped with GMC's latest infotainment and driver assistance technology. A standard 13.4-inch diagonal touchscreen powers the GMC Infotainment System, offering wireless Apple CarPlay and Android Auto compatibility, available built-in navigation, and intuitive controls. Available Super Cruise hands-free driver assistance technology brings an extra layer of capability to highway driving. The available Transparent Trailer View feature uses camera technology to display a virtual see-through view of your trailer, making maneuvering a dramatically easier experience. Wireless device charging and available in-vehicle Wi-Fi hotspot connectivity round out a thoroughly connected cabin.

GMC has equipped the 2026 Sierra 2500HD with a robust suite of safety and driver assistance features. Standard safety technology includes forward collision alert, automatic emergency braking, lane keep assist with lane departure warning, and a rear vision camera. Available features include a surround-vision camera system, HD Surround Vision, trailer side blind zone alert, and rear cross traffic alert. The available ProGrade Trailering System integrates trailer management tools directly into the infotainment display, helping drivers stay informed and in control when towing. Together, these systems provide meaningful confidence behind the wheel of a heavy-duty truck.

The 2026 GMC Sierra 2500HD is offered in a well-structured lineup of trim levels to match a wide range of needs and preferences. The entry-level Pro trim provides a strong foundation of capability and technology for work-focused buyers. The SLE builds on that with added comfort and convenience features, while the SLT brings a heightened level of interior refinement. The AT4 trim takes things off-road with a lifted suspension, skid plates, and off-road-tuned hardware for buyers who demand trail-ready capability. At the top of the lineup, the Denali trim delivers a luxury truck experience with premium materials, exclusive styling, and the most comprehensive technology package available. Each configuration is built around the same Professional Grade foundation that defines the Sierra HD name.

Whether you're in Ripon, WI, or the surrounding area, the 2026 GMC Sierra 2500HD stands ready to meet every challenge you bring its way. With a capable engine lineup, a well-appointed interior, and a wide range of trims to choose from, the Sierra 2500 HD is one of the most complete heavy-duty trucks on the market today.