2026 GMC Sierra 2500 HD Crew Cab

AT4 Pickup 4D 6 1/2 ft

10,455 miles

This vehicle is no longer available

Why You’ll Love This Sierra 2500

Slotted above the SLT and below the Denali in the Sierra HD lineup, the AT4 elevates everyday capability with an off-road suspension package featuring Rancho shocks, a 13.4-inch Premium GMC infotainment system with Google built-in plus wireless Apple CarPlay and Android Auto, and HD Surround Vision with up to 14 camera views for easier maneuvering and trailering.

AT4 Preferred Package

Originally valued at $405, this package adds a power sliding rear window with defogger for convenience, LED smoked amber roof marker lamps for improved visibility, and a universal home remote for seamless control of compatible devices.

Duramax 6.6L Turbo-Diesel V8 Engine

Originally valued at $9,990, the Duramax 6.6L Turbo-Diesel V8 engine delivers substantial power and torque for demanding tasks and heavy hauling.

Power Sunroof

Originally valued at $995, a power sunroof opens the cabin to natural light and fresh air with a simple touch.

Onyx Black

Originally valued at $495, the Onyx Black paint finish provides a deep, glossy exterior aesthetic.

Serious towing power

Unleashes 470 HP and 975 lb-ft through the Duramax 6.6L Turbo-Diesel V8 engine, Allison 10-speed automatic transmission and 4WD, enhanced by an exhaust brake for controlled descents.

Off-road suspension package

Provides enhanced capability over rugged terrain with twin-tube Rancho shocks, ensuring a smoother ride and improved control.

13.4-inch premium GMC infotainment system

Features a large diagonal display with Google built-in compatibility, wireless Apple CarPlay and wireless Android Auto for comprehensive connectivity and entertainment.

HD surround vision

Offers up to 14 camera views, providing comprehensive visibility around the vehicle for easier maneuvering in tight spaces or with a trailer.

Adventure-ready engineering

The AT4 trim delivers enhanced off-road capability and premium comfort, designed for challenging terrain and demanding work.

Premium interior comfort

Showcases a Jet Black interior with Kalahari accents, complemented by heated and ventilated perforated leather seating surfaces for year-round comfort.

Hill descent control

Manages vehicle speed on steep declines, allowing for controlled and confident navigation of challenging off-road conditions.

Adaptive cruise control with trailering

Maintains a set following distance from the vehicle ahead, even when towing, reducing driver fatigue on long journeys.

20-inch gloss-black aluminum wheels

Enhance the truck's rugged aesthetic with a distinctive and aggressive appearance.

Wireless Apple CarPlay

Integrates your iPhone wirelessly for navigation, music and messaging directly on the infotainment screen.

Wireless Android Auto

Connects your Android smartphone wirelessly, providing access to apps, maps and media without cables.

Sierra HD Pro Safety suite

Includes Forward Collision Alert, Lane Departure Warning, Automatic Emergency Braking, Front Pedestrian Braking and Following Distance Indicator for enhanced awareness.

20-inch high gloss black aluminum wheels

High gloss black aluminum wheels provide a distinctive foundation and enhance the vehicle's overall appearance.

This content is AI-generated and some details may not be 100% accurate. Refer to the details throughout this page for specific vehicle info.