2026 GMC Sierra 3500 HD

The 2026 GMC Sierra 3500 HD is a powerhouse built to take on the toughest tasks. Buyers can choose from multiple powertrain configurations, including a capable gasoline V8 and the available Duramax 6.6-liter turbo-diesel V8, which delivers impressive torque for towing and hauling.

The Sierra HD is engineered to handle extreme payload and trailer loads with confidence, making it a standout in the heavy-duty segment. Whether you're navigating a crowded job site or cruising down the open highway, the Sierra 3500 HD gives you the performance foundation to get it done right.

Step inside the 2026 GMC Sierra 3500 HD and you'll find a cabin that balances rugged utility with genuine comfort. Depending on the trim level, the interior can be outfitted with premium materials, available leather-appointed seating, and thoughtfully designed storage solutions that keep your gear organized and accessible.

The available MultiPro Tailgate delivers added functionality whether you're loading up or taking a quick break on the job. Rear-seat legroom is generous, making the crew cab configuration a comfortable place for passengers on longer journeys as well.

The 2026 GMC Sierra 3500 HD brings a sophisticated suite of technology designed to keep you connected and in command. A large available diagonal touchscreen anchors the infotainment system, supporting wireless Apple CarPlay and Android Auto integration.

Available Super Cruise hands-free driver assistance technology brings additional capability on compatible highways, while the available head-up display keeps critical information in your line of sight. Towing-focused technology features such as available transparent trailer view, integrated trailer brake controller, and in-vehicle trailering app help make hauling more manageable and intuitive than ever before.

GMC has equipped the 2026 Sierra 3500 HD with a strong array of safety and driver assistance features to give you added peace of mind on every drive. Available features include forward collision alert, automatic emergency braking, lane keep assist with lane departure warning, and following distance indicator.

The available HD surround vision system provides a bird's-eye camera view around the truck, which is especially useful when maneuvering in tight spaces or backing up to a trailer. These technologies work together seamlessly to support driver awareness and help protect everyone in and around the vehicle.

The 2026 GMC Sierra 3500 HD is available in a range of trim levels that cater to a wide variety of buyers. The lineup kicks off with the work-ready Pro trim, followed by the SLE, which adds a welcome layer of comfort and convenience features.

The SLT steps things up further with additional premium touches, while the available AT4 trim brings enhanced off-road capability with features designed for more demanding terrain. At the top of the range, the Denali trim delivers a luxury-focused experience with premium interior appointments, distinctive styling, and advanced technology features — all wrapped in the unmistakable presence that defines the Denali name.

The 2026 GMC Sierra 3500 HD is a truck built with purpose, precision, and professional-grade DNA. Whether you're drawn to the powerful performance, the thoughtfully crafted interior, or the advanced towing technology, this heavy-duty pickup delivers on every front. Stop in to explore the full Sierra HD lineup and find the configuration that fits your needs.