Used 2024 GMC Sierra 3500HD AT4

The 2024 GMC Sierra 3500HD AT4 combines heavy-duty muscle, premium craftsmanship, and uncompromising off-road capability. Built for those who need maximum strength without sacrificing refinement, this HD truck stands tall with bold styling, advanced trailering technology, and a cabin designed for comfort in the harshest environments. 

Performance & Capability 

• Engine: Duramax 6.6L Turbo-Diesel V8 delivering immense torque, durability, and smooth power delivery 

• Transmission: Allison 10-Speed Automatic for precise, confident towing and refined everyday driving 

• 4-Wheel Drive with Autotrac Two-Speed Transfer Case for optimized traction on rugged terrain 

• Off-Road Suspension with Skid Plates for confidence in mud, snow, rock, or gravel 

• 3.42 Rear Axle Ratio engineered for heavy towing and steady pulling power 

• Trailering Equipment: Integrated trailer brake controller, Hitch Guidance with Hitch View, Trailer Side Blind Zone Alert, and full in-vehicle Trailering App 

• Gooseneck/5th Wheel Prep Package for maximum hauling capability 

• Exhaust Brake & Heavy-Duty Cooling Systems for controlled descents and stable towing under load 

• Automatic Locking Rear Differential for sure-footed traction when it matters most 

• High Idle Switch for cold-weather or worksite utility 

• 20" High Gloss Black Aluminum Wheels with all-terrain tires for aggressive stance and capability 

Winter & Weather Comfort 

• Heated & Ventilated Front Seats for comfort in every season 

• Heated Second-Row Outboard Seats & Heated Steering Wheel to keep the whole crew warm 

• Remote Vehicle Start to pre-condition the cabin 

• Dual-Zone Automatic Climate Control with precise cabin temperature management 

• Winter Grille Cover for enhanced cold-weather performance 

• Engine Block Heater for reliable starts in low temperatures 

• Premium Floor Liners with removable inserts for all-season protection 

Interior Comfort & Convenience 

• Front Bucket Seats with Power Adjustments & Driver Memory for personalized comfort 

• Jet Black Interior with Kalahari Accents for a rugged yet upscale look 

• Power Sliding Rear Window & Rear Seat Storage Package for added versatility 

• Wireless Charging, USB ports front and rear, and dual 120V outlets in-cabin and in-bed 

• Keyless Open & Push-Button Start for seamless entry and ignition 

• 13.4" GMC Premium Infotainment Touchscreen with Google Built-In, Navigation, and Wireless Apple CarPlay®/Android Auto™ 

• 12" Reconfigurable Digital Driver Display plus 15" Multicolor Head-Up Display for at-a-glance information 

• Bose Premium Audio System delivering rich, immersive sound 

• Rear Camera Mirror & Bed View Camera for advanced visibility while driving or towing 

• Off-Road High Clearance Steps for easier cabin access and rugged utility 

Safety & Driver Assistance 

• Sierra HD Pro Safety & AT4 Premium Safety Technologies for enhanced confidence 

• Forward Collision Alert with Automatic Emergency Braking 

• Lane Departure Warning, Following Distance Indicator, and Front Pedestrian Braking 

• HD Surround Vision providing a full 360° view 

• Front & Rear Park Assist and Rear Cross Traffic Alert 

• Adaptive Cruise Control for smoother highway driving 

• Teen Driver Mode & Buckle-to-Drive for added safety accountability 

• LED roof-mounted marker lamps for added visibility and presence 

Exterior Styling & Utility 

• Exterior Colour: Summit White — crisp, bold, and unmistakably professional-grade 

• AT4 Signature Black Chrome & Red Recovery Hooks delivering rugged style 

• LED Headlamps, Fog Lamps & Cargo Bed Lighting for superior visibility 

• GMC MultiPro Tailgate offering multiple configurations for loading, stepping, or workstation use 

• Spray-On Bedliner and 120V Bed Power Outlet for work-ready durability 

• Rear CornerSteps & Task Lighting on Mirrors for easier bed access day or night 

• Gooseneck/5th Wheel Towing Provisions integrated cleanly into the bed for heavy-duty hauling 

Whether you’re towing massive loads, exploring remote terrain, or simply demanding the best from your heavy-duty truck, the 2024 GMC Sierra 3500HD AT4 delivers unmatched capability, refined comfort, and commanding presence. Built for those who expect their truck to work hard — and look good doing it.