2026 GMC Sierra 3500

The Sierra 3500 is available in a wide range of trims that cater to both work-focused needs and premium lifestyles. The base models emphasize utility with durable construction and straightforward design, while the SLT, Denali, and Denali Ultimate trims add elevated refinement and luxury. The AT4 and AT4X offer rugged off-road styling with functional upgrades like all-terrain tires, reinforced suspension, and skid plates, making them ideal for drivers who need heavy-duty capability both on and off the road.

Known for its unmatched towing and hauling ability, the 2026 Sierra 3500 is engineered to deliver confidence under the heaviest demands. Available dual rear-wheel configurations provide extra stability, while integrated trailering technology simplifies the towing process. GMC’s advanced suspension and braking systems ensure smooth handling even with massive payloads, proving that strength can coexist with control and comfort.

Step inside the Sierra 3500 and you’ll find a cabin that balances practicality with refinement. Work-oriented trims feature durable materials designed to handle tough environments, while higher trims like the Denali Ultimate showcase premium leather, authentic wood accents, and state-of-the-art technology. A large infotainment system, smartphone connectivity, available Bose audio, and driver-focused controls create an environment that keeps productivity and comfort at the forefront. With spacious seating and advanced climate control, the Sierra 3500 ensures that long hauls remain comfortable.

Under the hood, the Sierra 3500 offers a lineup of engines built to deliver extraordinary power. The standard gasoline V8 provides strong performance for everyday tasks, while the available Duramax turbo-diesel engine takes towing and hauling capability to the next level. With best-in-class torque and horsepower options, the Sierra 3500 is engineered to move the heaviest trailers and equipment with confidence and efficiency.

GMC equips the Sierra 3500 with advanced safety systems designed to protect drivers, passengers, and cargo. Available technologies include forward collision alert, lane departure warning, blind spot monitoring, and adaptive cruise control. For towing, features such as trailer side blind zone alert, trailer brake integration, and a multi-camera system give drivers enhanced awareness and peace of mind when maneuvering large loads.