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Duramax 6.6L Turbo-Diesel V8 engine producing 470 horsepower and 975 lb-ft of torque, paired with an Allison® 10-speed automatic transmission for smooth and efficient power delivery.
Maximum towing capacity of up to 36,000 lbs when properly equipped, accommodating heavy trailers and equipment.
Integrated trailer brake controller and Diesel Exhaust Brake enhance control and safety during towing operations.
20" Ultra-Bright machined aluminum wheels with bright chrome inserts, contributing to a commanding road presence.
Denali-exclusive authentic open-pore wood and patterned aluminum trim, along with forge perforated leather seating surfaces, offering a sophisticated and comfortable interior.
12-way power-adjustable heated and ventilated front seats, ensuring optimal comfort for driver and passenger.
13.4" diagonal Premium GMC Infotainment System with Google built-in apps such as navigation and voice assistance, providing intuitive control and connectivity.
Wireless Apple CarPlay and Android Auto compatibility, allowing seamless integration of smartphones for hands-free communication and entertainment.
Comprehensive suite of driver-assistance features, including Forward Collision Alert, Lane Departure Warning, and Rear Cross Traffic Alert, enhancing safety on the road.
Signature Denali chrome grille and LED headlamps, creating a bold and distinctive front fascia.
Power-retractable assist steps with LED perimeter lighting, providing convenience and illumination when entering or exiting the vehicle.
MultiPro Tailgate offering six unique functions to facilitate loading, unloading, and accessing the cargo bed.
Spacious cabin with premium materials and attention to detail, reflecting Denali's commitment to luxury.
Dual-zone automatic climate control, allowing personalized temperature settings for driver and passengers.
Ample storage solutions, including a center console large enough to accommodate laptops and other essentials.
The 2025 GMC Sierra 3500HD Denali stands out as a powerful and luxurious heavy-duty truck, adept at handling substantial towing and hauling tasks while providing a refined and comfortable driving experience. Its combination of advanced technology, premium materials, and robust performance positions it as a top choice for those seeking capability without compromising on luxury.