2026 GMC Sierra 3500

The 2026 GMC Sierra 3500HD offers a variety of trim levels that cater to different needs and preferences, making it adaptable for both work and leisure. The base trim, the Sierra, provides a solid foundation with essential features, while the SLE trim introduces more convenience and advanced features. The SLT trim enhances luxury with refined details and upscale materials. For those seeking the ultimate in rugged performance and premium amenities, the AT4 trim provides off-road capabilities alongside luxury features, including a distinctive black chrome grille and skid plates. The Denali trim, the top-tier option, boasts exclusive design elements like polished aluminum wheels, chrome accents, and a distinctive front grille, creating a sophisticated yet tough appearance. Each trim offers varying exterior finishes and upgrades, ensuring there's a perfect fit for every need and style.

Under the hood, the 2026 GMC Sierra 3500HD delivers impressive power with a choice of two robust engines. The standard 6.6L V8 gas engine provides 401 horsepower and 464 lb-ft of torque, offering strong performance for towing and hauling. For those needing even more power, the available 6.6L Duramax® Turbo-Diesel V8 engine produces an astonishing 445 horsepower and 910 lb-ft of torque, making it one of the most powerful engines in its class. This diesel engine is paired with a 10-speed Allison® automatic transmission, offering seamless shifting for optimal towing and handling. Whether you're looking for maximum towing capacity or a balance between performance and efficiency, the Sierra 3500HD ensures that you have the muscle to get the job done, no matter the task at hand.

The 2026 GMC Sierra 3500HD excels in performance, thanks to its robust engine options and advanced engineering. The truck’s heavy-duty suspension system is designed to handle the rigors of towing and heavy hauling, ensuring a smooth ride even when carrying substantial loads. With the 6.6L Duramax® Turbo-Diesel V8 engine, it provides exceptional towing capabilities, able to pull up to 36,000 pounds when properly equipped. The Sierra 3500HD is also equipped with advanced stability and traction control systems to maintain control in various driving conditions. A durable frame and innovative suspension provide excellent handling, while its precise steering and advanced brake systems ensure maximum safety and performance when towing. With features like trailer sway control and a high-strength steel frame, the Sierra 3500HD offers performance that never compromises on power or reliability.

Inside the 2026 GMC Sierra 3500HD, comfort and functionality meet in a well-designed cabin that caters to both work and leisure. The interior is designed with durable materials to withstand the demands of a heavy-duty vehicle, yet it doesn’t sacrifice luxury. The Denali trim, in particular, offers premium leather seating and refined details that elevate the driving experience. With ample cabin space, the Sierra 3500HD ensures that both the driver and passengers can enjoy a comfortable ride, even on long trips. The truck is equipped with advanced technology, including a large touchscreen infotainment system with Apple CarPlay® and Android Auto™ integration, allowing for easy connectivity. Additionally, available features like heated and ventilated seats and a premium sound system make the Sierra 3500HD a great choice for those who want comfort and convenience in their truck. With plenty of storage and an intuitive layout, the interior is as practical as it is luxurious.

The 2026 GMC Sierra 3500HD is equipped with a comprehensive suite of safety features designed to protect you and your passengers. Standard features include a rearview camera, front and rear parking sensors, and a high-strength steel frame, all of which help ensure your safety on the road. For added peace of mind, the Sierra 3500HD offers advanced driver-assist technologies such as lane departure warning, forward collision alert, and automatic emergency braking. These features work together to help prevent accidents before they happen. Additionally, the truck is available with GM’s ProGrade™ Trailering System, which provides enhanced visibility and safety when towing, ensuring a safer and more controlled experience when hauling heavy loads. With its combination of traditional safety features and innovative technologies, the Sierra 3500HD offers a well-rounded safety package for all driving conditions.