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6.6L Duramax Turbo-Diesel V8 Engine: Produces 470 horsepower and 975 lb-ft of torque, providing robust power for heavy-duty tasks.​
Allison 10-Speed Automatic Transmission: Ensures smooth and efficient power delivery, enhancing driving performance.​
Maximum Towing Capacity: Capable of towing up to 36,000 lbs when properly equipped, making it suitable for hauling large trailers and equipment.​
Integrated Trailer Brake Controller: Offers precise control over trailer braking, improving safety during towing operations.​
Signature Denali Grille: Features a distinctive chrome design that exudes sophistication and presence.​
20-Inch Ultra-Bright Machined Aluminum Wheels: Enhance the truck's aesthetic appeal and provide a commanding stance.​
LED Lighting: Includes LED headlamps, daytime running lights, and taillights for improved visibility and a modern look.​
Power-Retractable Assist Steps: Facilitate easy entry and exit from the cabin, adding convenience and style.​
Premium Leather-Appointed Seating: Offers a refined and comfortable environment for all passengers.​
Heated and Ventilated Front Seats: Ensure comfort in various weather conditions by providing adjustable heating and cooling.​
Authentic Open-Pore Wood and Aluminum Trim: Adds a touch of elegance and craftsmanship to the cabin's design.​
Bose Premium Sound System: Delivers high-quality audio for an immersive listening experience.​
13.4-Inch GMC Infotainment System: Features a user-friendly interface with navigation and voice recognition capabilities.​
Wireless Apple CarPlay and Android Auto: Allows seamless integration of smartphones for hands-free communication and entertainment.​
Head-Up Display (HUD): Projects key driving information onto the windshield, helping drivers keep their eyes on the road.​
Wireless Charging Pad: Provides convenient charging for compatible devices without the need for cables.​
Forward Collision Alert with Automatic Emergency Braking: Helps prevent potential frontal collisions by alerting the driver and applying brakes if necessary.​
Lane Keep Assist with Lane Departure Warning: Assists in maintaining lane position by providing gentle steering corrections and alerts.​
Blind Spot Monitoring with Rear Cross Traffic Alert: Enhances awareness of vehicles in blind spots and approaching traffic when reversing.​
HD Surround Vision Camera: Offers a 360-degree view around the vehicle, aiding in parking and maneuvering in tight spaces.​
MultiPro Tailgate: Provides six unique configurations for enhanced cargo loading and accessibility.​
Spray-On Bedliner: Protects the truck bed from wear and corrosion, extending its durability.​
LED Cargo Bed Lighting: Illuminates the bed area, making it easier to work in low-light conditions.​
120V Power Outlet in the Bed: Offers a convenient power source for tools and equipment on the go.​
The 2025 GMC Sierra 3500HD Denali with the 6.6L Duramax Turbo-Diesel V8 stands as a pinnacle of strength and sophistication in the heavy-duty truck segment. Its blend of powerful performance, luxurious features, and advanced technologies makes it an ideal choice for those seeking capability without compromising on comfort.