The 2026 GMC Sierra 2500HD AT4 is a powerful and dependable truck designed for those who demand top-notch performance and reliability in their commercial vehicle. This used truck has logged 22,526 miles, and it stands out with its Onyx Black exterior complemented by a sophisticated Jet Black interior with Kalahari accents.

Under the hood lies a beastly 6.6L Duramax V8 Turbo Diesel engine, delivering an impressive 470 horsepower and 975 lb-ft of torque. Paired with a 10-speed automatic transmission and a 4X4 drivetrain, this truck ensures peak performance whether you're on the road or tackling rugged terrains.

Key Features:

• Powerful Duramax 6.6L Turbo V8 Engine for robust towing and hauling
• 10-Speed Automatic Transmission for smooth and efficient driving
• 4WD System with 2-Speed Active Transfer Case for superior off-road capabilities
• Gooseneck/5th Wheel Prep Package for integrated trailer towing
• X31 Off-Road Package and Off-Road High Clearance Step for enhanced ground clearance and off-road prowess

Inside, the Sierra 2500HD AT4 combines luxury with utility, offering features that ensure a comfortable ride and seamless connectivity:

• Heated and Ventilated Front Seats with 10-way power adjustments and lumbar support
• Premium GMC Infotainment System with Apple CarPlay and Android Auto for easy media access
• Bose Premium 7-Speaker Sound System for an enriched audio experience
• Wireless Charging and 15" Multicolor Head-Up Display for modern convenience

Safety and driver assistance are priorities, with advanced systems in place:

• HD Surround Vision and Ultrasonic Front and Rear Park Assist for enhanced parking and maneuvering
• Automatic Emergency Braking and Rear Cross Traffic Alert to boost safety
• Bed View Camera with Trailer Provisions and Hitch Guidance for easy trailer handling

Additional Features:

• 20" High Gloss Black Aluminum Wheels and Heated Door Mirrors with rain-sensing wipers
• Spray-on Pickup Bedliner with GMC Logo and premium floor liners for durability
• Hill Descent Control for confident handling on steep terrains

With the AT4 Premium Plus Package, including a power sunroof and Technology Package, this truck does not compromise on luxury or functionality. The Sierra 2500HD's capability extends from its performance-oriented Duramax diesel engine to its thoughtful interior design, making it a perfect companion for business needs and off-road adventures alike.

Discover the capability and craftsmanship of the 2026 GMC Sierra 2500HD AT4 at our showroom. Explore firsthand how this vehicle merges heavy-duty capabilities with everyday comfort and advanced technologies, all tailored to meet your business demands. Visit Classic Chevrolet Fleet Commercial to see how this truck can transform the way you work and travel. 🚘