2026 GMC Sierra 2500 HD

The 2026 GMC Sierra 2500 HD is purpose-built for drivers who need real, measurable capability. It comes equipped with a powerful 6.6-liter V8 gasoline engine as standard, while a 6.6-liter Duramax turbo-diesel V8 is also available for those who demand maximum torque and towing muscle. The diesel option pairs with an Allison 10-speed automatic transmission, delivering a smooth, confident power transfer under even the most demanding conditions. Whether you're towing a fifth-wheel trailer or navigating rough terrain, this truck is engineered to perform.

Step inside the Sierra 2500 HD and you'll find a cabin that blends workday utility with genuine comfort. Depending on your chosen trim, the interior can feature premium leather-appointed seating, available heated and ventilated front seats, and thoughtful storage solutions throughout the cabin. The available MultiPro tailgate adds even more versatility for those who use their truck as a mobile workspace. Refinement and durability go hand in hand here, making every mile more comfortable whether you're heading to a job site or cruising across the state.

The 2026 Sierra 2500 HD keeps you connected and in control with a well-equipped technology suite. A large available diagonal touchscreen takes center stage on the dashboard, running a user-friendly infotainment system with wireless Apple CarPlay and Android Auto compatibility. Available Super Cruise hands-free driver assistance technology adds a sophisticated edge for highway driving. The available ProGrade Trailering System is a standout feature, offering up to 14 available camera views and an in-vehicle trailering app to make hitching and maneuvering your trailer more intuitive than ever.

GMC equips the Sierra 2500 HD with a robust suite of driver assistance and safety technologies. Available features include Forward Collision Alert, Lane Keep Assist with Lane Departure Warning, and Automatic Emergency Braking. The available HD Surround Vision system provides a top-down view around the vehicle, which is especially useful when navigating tight spaces or hooking up to a trailer. Whether you're hauling through congested areas or managing a large load on the open road, the Sierra HD is built to help keep you and your cargo safe.

The 2026 GMC Sierra 2500 HD is available in a well-rounded lineup of trim levels to suit a variety of needs and budgets. The range begins with the work-focused Pro and moves through the SLE, SLT, AT4, and culminates with the premium Denali at the top. The Denali trim delivers a truly luxurious heavy-duty truck experience, featuring exclusive exterior styling, premium interior materials, and an elevated suite of technology and comfort features. Each step up the trim ladder adds meaningful upgrades, making it easy to find the right configuration for your lifestyle.

The 2026 GMC Sierra 2500 HD is a heavy-duty truck that refuses to compromise, offering best-in-class capability alongside a refined, well-appointed experience that sets it apart from the competition. Visit Deacon Jones GMC of Clinton to explore available inventory and find the Sierra 2500 HD trim that's right for you."