2026 GMC Sierra 2500 Hd AT4

Meet the 2026 GMC Sierra 2500HD AT4, a premium heavy-duty pickup engineered to handle demanding work and deliver refined comfort on every drive. - 6.6L V8 Duramax Turbodiesel engine with 470 horsepower and 975 lb-ft of torque - 10-Speed Automatic transmission with 4WD capability - AT4 Premium Plus Package with enhanced off-road features - Bose Premium 7-Speaker Sound System with SiriusXM 360L - Premium GMC Infotainment System with Apple CarPlay and Android Auto integration - Multiple camera system including Bed View Camera and HD Surround Vision - Advanced safety technology: Automatic Emergency Braking, Forward Pedestrian Braking, Lane Departure Warning - Heated and ventilated front seats with perforated leather trim - 10-Way power driver and passenger seats with lumbar support - Power sunroof for enhanced interior ambiance - 20 high-gloss black aluminum wheels - Spray-on pickup bedliner with GMC logo - X31 Off-Road Package with Hill Descent Control and enhanced suspension - Gooseneck/5th Wheel Prep Package for towing capability - Multicolor 15 diagonal head-up display The Sierra 2500HD AT4 combines workhorse capability with luxury features that make every journey feel considered and controlled. The Duramax diesel engine delivers responsive power with efficiency, while the 10-speed automatic ensures smooth operation across varied terrain and driving conditions. Whether navigating city streets or tackling challenging jobsites, this truck responds with precision and reliability. Inside, you'll find appointments typically reserved for premium vehicles. Heated and ventilated leather seats conform to your body, while the 10-way power adjusters with lumbar support ensure all-day comfort. Dual-zone automatic climate control maintains your preferred temperature, and the power sunroof adds an open-air dimension to your cab experience. Technology integrates seamlessly into daily operations. The head-up display projects critical information directly into your line of sight, eliminating distractions. Wireless charging and dual USB ports keep devices ready for use. The surround-view camera system provides 360-degree visibility, especially valuable when maneuvering in tight spaces or reversing with cargo. Safety features work proactively to protect you and your passengers. Automatic emergency braking, forward pedestrian detection, and lane departure warnings respond to potential hazards in real time. Trailer side blind zone alerts and rear cross-traffic warning enhance awareness when towing or backing. The AT4 off-road package elevates capability with a 2-speed active transfer case, electronic locking rear differential performance, and specially tuned suspension geometry. Hill Descent Control allows confident descents on steep grades, while the high-clearance step design provides easier entry and exit. Schedule your test drive today and discover how the Sierra 2500HD AT4 transforms demanding work into a refined and capable experience.

Market range uses current approved inventory near this dealer. Taxes, fees, incentives, vehicle history, and equipment can affect actual value.

Truck specifications

Engine

6.6L Duramax Turbo-Diesel V8 engine

Transmission

Automatic

Drivetrain

Four Wheel Drive

Fuel

Diesel Fuel

Exterior

Gray

Interior

Jet Black with Kalahari accents, Perforated Front Leather seat trim

Doors

4

Body Style

Truck

Features

• AWD
• Adaptive Cruise Control
• Android Auto
• Apple CarPlay
• Automatic Climate Control
• Backup Camera
• Bluetooth
• Fog Lights
• Lane Departure Warning
• Leather Seats
• Parking Sensors / Assist
• Power Seats
• Premium Plus Package
• Push Start
• Rain Sensing Wipers
• Remote Start
• Side-Impact Air Bags
• Sunroof / Moonroof
• Technology Package
• Tow Package
• Wireless Phone Charging