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The 2026 GMC Sierra HD lineup is available in the hardworking Pro, the well-equipped SLT, the off-road ready AT4 and the luxurious Denali Ultimate trims. Keep informed and in command using the technological innovations found in these heavy duty pickups. A color touchscreen with Google built-in compatibility and voice-activated technology for your phone provides a seamless way to customize your entertainment, while a driver-focused display that puts information front, center and easily visible in high-resolution clarity. Sierra HD also offer an available 15″ diagonal Head-Up Display that helps keep important information like speed and alerts in clear view. Technology always takes center stage inside the the 2026 GMC Sierra HD.
Sierra HD trucks offers advanced technologies so you can trailer with confidence. Available performance features include:
Premium 2026 GMC Sierra HD cabs provide amenities that help to make every trip first-class. Available interior features include:
Powerfully bold and impressively stylish, the 2026 GMC Sierra HD can’t help but to draw stares. Available exterior features include:
The 2026 GMC Sierra HD is engineered to handle some of the heaviest hauling jobs on the road. The Sierra 2500 HD offers available maximum towing of up to 22,390 lbs., while the Sierra 3500 HD reaches up to 36,000 lbs. with a fifth-wheel or gooseneck hitch setup.GMC The standard 6.6-liter V-8 gasoline engine delivers 401 horsepower and 464 lb-ft of torque, and all Sierra HD models come paired with 10-speed automatic transmission as standard.Valley GMC Whether you’re hauling equipment for a job site in Duluth or towing a recreational trailer across Georgia, the Sierra HD is built to keep up. Visit Rick Hendrick Buick GMC Duluth to explore configurations and find the right setup for your needs.
The 2026 GMC Sierra HD gives drivers a choice between two powerful engines to match any workload. The standard engine is the 6.6-liter V-8 gasoline engine producing 401 horsepower and 464 lb-ft of torque, while the available Duramax 6.6-liter V8 turbodiesel cranks out 470 horsepower and a peak 975 lb-ft of torque — with torque up 25% at lower RPMs for improved climbing and trailering ability.Valley GMC Both engines are paired with the 10-speed automatic transmission for smooth, confident power delivery. Whether you need a capable gas engine for everyday work or maximum diesel torque for the heaviest jobs, our team at Rick Hendrick Buick GMC Duluth can help you choose the right powertrain for your lifestyle.
The 2026 GMC Sierra HD offers a wide range of trims to suit every type of driver, from worksite professionals to luxury truck enthusiasts. Available trims include the Pro, SLE, SLT, AT4, Denali, AT4X, and Denali Ultimate.Valley GMC Each trim brings its own personality — the AT4 features an exclusive Jet Black interior with Kalahari accents and off-road-ready hardware, while the Denali Ultimate delivers full-grain leather seating, authentic open-pore Paldao wood, and 16-way power front seats with a massage feature.GMC Shoppers near Duluth can explore the full Sierra HD trim lineup in person at Rick Hendrick Buick GMC, where our team will walk you through every option and help you find the perfect match.
The 2026 GMC Sierra HD doesn’t just tow heavy — it helps you tow smarter and safer. The ProGrade Trailering System provides up to 14 camera views, including a transparent trailer view, giving you precision and confidence when maneuvering heavy loads.Vaughn Motors Blog Additional available features include Trailer Side Blind Zone Alert, Rear Cross Traffic Alert, and an In-Vehicle Trailering App that lets you create customized trailer profiles, run pre-departure checklists, and monitor trailer tire pressure and lighting.Jodanbuickgmc These technologies make the Sierra HD an ideal choice for Duluth-area drivers who rely on their truck for serious work and want peace of mind every time they hook up a trailer.
Choosing between the Sierra 2500 HD and 3500 HD comes down to how much capability you need. Both are heavy-duty trucks built for serious work, but the Sierra 3500 HD is engineered to handle even heavier loads — with maximum available towing up to 36,000 lbs. compared to up to 22,390 lbs. for the 2500 HD.GMC Payloads can reach up to 3,759 lbs. for the 2500 HD and up to 7,290 lbs. for the 3500 HD, and dual-rear-wheel configurations are available exclusively on the 3500 HD for added stability under the heaviest loads.Valley GMC If you’re unsure which model is right for your hauling needs, the knowledgeable team at Rick Hendrick Buick GMC Duluth is ready to help you compare configurations and get behind the wheel of the right Sierra HD today.
