2026 GMC Sierra 2500 HD

The 2026 Sierra 2500 HD is purpose-built to handle serious work. A standard 6.6-liter V-8 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, an available 6.6-liter Duramax turbo-diesel V-8 generates 470 horsepower and 975 pound-feet of torque, mated to an Allison 10-speed automatic transmission. Whether you're towing trailers or hauling heavy payloads, the Sierra HD is engineered to deliver.

Step inside the 2026 Sierra 2500 HD and you'll find a cabin designed with both comfort and functionality in mind. Available seating configurations include Regular Cab, Double Cab, and Crew Cab body styles, giving you the flexibility to fit your lifestyle. Higher trim levels bring premium materials, available leather-appointed seating, heated and ventilated front seats, and a heated steering wheel that make long drives far more enjoyable. With ample storage solutions and an ergonomically organized layout, every detail serves a purpose.

The 2026 Sierra 2500 HD keeps you informed and connected with an available 13.4-inch diagonal color touchscreen running GMC's intuitive infotainment system. Wireless Apple CarPlay and Android Auto compatibility come standard on select trims, while available wireless device charging keeps your devices powered on the go. A built-in 4G LTE Wi-Fi hotspot, available head-up display, and the impressive Multi-Pro tailgate with integrated work surface round out a tech package that works as hard as you do. Available Super Cruise hands-free driver assistance technology adds another layer of capability for long highway stretches.

GMC equips the 2026 Sierra 2500 HD with a comprehensive suite of safety and driver assistance features designed to give you confidence on every drive. Available features include forward collision alert, automatic emergency braking, lane change alert with side blind zone alert, rear cross-traffic alert, and IntelliBeam automatic high-beam headlamps. The available ProGrade Trailering System with up to 14 camera views helps you monitor your surroundings when towing, making it easier to manage large loads safely and confidently. Drivers throughout Sheboygan, Oostburg, will appreciate the peace of mind these technologies provide.

The 2026 Sierra 2500 HD is offered in six well-equipped trim levels to match a wide range of needs and preferences. The Pro serves as the capable base model, while the SLE adds comfort and convenience upgrades. The SLT brings a noticeable step up in refinement with premium interior appointments. Adventure-ready buyers will appreciate the AT4, which features off-road-tuned suspension, skid plates, and all-terrain tires. The luxurious Denali delivers top-tier materials and exclusive styling cues, and the range-topping Denali Ultimate takes it even further with the most premium features available in the Sierra HD lineup.

The 2026 GMC Sierra 2500 HD is a heavy-duty truck that refuses to compromise. Whether you're drawn to its impressive towing capacity, its premium interior options, or its cutting-edge technology, this truck offers something extraordinary at every trim level. Stop by and explore the full Sierra HD lineup to find the configuration that works best for you.