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Engine: 6.6L Duramax Turbo-Diesel V8 producing 470 horsepower and 975 lb-ft of torque​
Transmission: Allison 10-speed automatic for smooth and efficient power delivery​
Towing Capacity: Up to 36,000 lbs when properly equipped, making it ideal for heavy-duty hauling ​
Trailering Technologies: Features like the ProGrade Trailering System and up to 14 available camera views, including Transparent Trailer View, enhance towing confidence ​
Wheels: 20" Ultra-Bright machined aluminum wheels with bright chrome inserts​
Grille: Signature Denali chrome grille for a bold and distinctive appearance​
Lighting: LED projector headlamps with signature lighting and animated sequences​
Tailgate: Six-function MultiPro Tailgate for versatile cargo management​
Seating: 12-way power-adjustable heated and ventilated front seats with premium leather upholstery​
Materials: Authentic open-pore wood and aluminum trim accents throughout the cabin​
Climate Control: Dual-zone automatic climate control for personalized comfort​
Storage: Ample interior storage solutions, including under-seat compartments and a spacious center console​
Infotainment: 13.4" diagonal GMC Premium Infotainment System with Google built-in compatibility​
Driver Display: 12.3" diagonal digital Driver Information Center for customizable vehicle data​
Audio: Available Bose Premium Series with Centerpoint surround sound for an immersive audio experience​
Connectivity: Wireless Apple CarPlay and Android Auto integration, along with wireless charging capabilities​
Standard Features: Forward Collision Alert, Lane Departure Warning, Automatic Emergency Braking, and Front Pedestrian Braking​
Advanced Systems: Available Adaptive Cruise Control with trailering and Rear Cross Traffic Alert​
Camera Views: Up to 14 available camera views, including HD Surround Vision and Bed View Camera​
The 2025 GMC Sierra 3500HD Denali stands out as a top-tier heavy-duty truck that doesn't compromise on luxury or performance. Whether you're towing heavy loads or seeking a comfortable ride with advanced features, this truck is engineered to exceed expectations.