2026 GMC Sierra HD

The 2026 GMC Sierra HD is available in multiple trim levels, each designed to cater to specific needs and preferences. From the refined Denali to the more rugged AT4, there is a Sierra HD for every type of driver. The Sierra HD is available in Sierra 2500 HD and Sierra 3500 HD configurations. There are trim levels ranging from the starting Pro to the top-tier Denali Ultimate.

Under the hood, the 2026 GMC Sierra HD is equipped with a powerful engine lineup designed to tackle any challenge with ease. The standard engine is the 6.6-liter V8 gas engine, delivering impressive power and torque. For those who need even more capability, the available 6.6-liter Duramax® turbo-diesel V8 engine takes things to the next level, providing exceptional towing capacity and unmatched strength with 470 horsepower. With these engines, the Sierra HD is ready to take on the most demanding tasks, whether you're hauling heavy loads or navigating steep inclines.

When it comes to performance, the 2026 GMC Sierra HD is engineered to provide both power and precision. The truck is designed with a robust frame and suspension system to handle heavy-duty workloads without compromising on comfort. Towing capacity is where the Sierra HD truly shines, with the Sierra 2500 HD offering 22,390 pounds of towing capacity when properly equipped and the Sierra 3500 HD with 36,000 pounds of towing capacity when it gets equipped properly.

The interior of the 2026 GMC Sierra HD is where utility meets luxury. Premium materials, spacious seating, and advanced technology make for an exceptional driving experience. The cabin is designed for comfort, with features like available leather seating, heated and ventilated seats, and premium audio systems. The driver-focused cockpit is equipped with an intuitive infotainment system, including an available 13.4-inch diagonal touchscreen, which offers seamless integration with your smartphone. The Sierra HD ensures that everyone has plenty of room to stretch out, while ample cargo space provides flexibility for hauling gear or tools. Whether you're on the job site or embarking on a road trip, the interior of the Sierra HD is designed to provide both comfort and practicality.

The 2026 GMC Sierra HD is equipped with a wide range of advanced safety features to help keep you and your passengers safe on the road. Forward Collision Alert and Lane Departure Warning are just a couple of the features designed to assist with situational awareness. The available HD Surround Vision camera system provides a bird’s-eye view of the area around your truck, ensuring enhanced visibility when parking or maneuvering in tight spaces. These advanced safety systems work in tandem to provide peace of mind, whether you’re on the highway or navigating challenging terrains.