Used 2023 GMC Sierra 1500 AT4

The 2023 GMC Sierra 1500 AT4 is built for those who demand rugged capability wrapped in premium refinement. With its signature off-road stance, bold athletic design, and advanced diesel performance, this truck is engineered to take you farther — whether carving through backcountry trails or cruising the highway with confidence. 

Performance & Capability 

• Engine: Duramax 3.0L Turbo-Diesel delivering smooth, confident torque and impressive long-range efficiency 

• Transmission: 10-Speed Automatic with Electronic Precision Shift for crisp, intelligent gear changes 

• Drivetrain: Autotrac 4WD with Two-Speed Transfer Case for adaptable traction on mud, snow, rock, and road 

• Rear Axle Ratio: 3.23 for balanced towing capability and fuel economy 

• Off-Road Suspension Package with monotube shocks, specially tuned springs, and raised ride height for trail stability 

• Automatic Locking Rear Differential for sure-footed grip in demanding terrain 

• Skid Plates shielding the underbody from off-road hazards 

• Hill Descent Control for controlled downhill maneuvering 

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

• Dual Exhaust for a bold presence and enhanced performance tone 

• Heavy-Duty Air Filter for dusty or harsh environments 

• 220-Amp Alternator to support accessories, towing, and electronic systems 

Winter & Weather Comfort 

• Heated & Ventilated Front Seats for year-round comfort 

• Heated Rear Outboard Seats & Heated Steering Wheel to keep every passenger warm 

• Remote Start System for pre-conditioning the interior 

• Tri-Zone Automatic Climate Control with moisture and humidity sensors 

• Engine Block Heater for cold-weather reliability 

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

Interior Comfort & Convenience 

• Front Bucket Seats with 10-Way Power Driver Seat, 8-Way Power Passenger Seat & Driver Memory 

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

• Power Sliding Rear Window and Rear Seat Storage Package for added utility 

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

• Keyless Open & Push-Button Start for seamless entry 

• 13.4" GMC Premium Infotainment Touchscreen with Google Built-In & Navigation 

• 12" Digital Driver Information Center plus 15" Multicolor Head-Up Display for customizable, at-a-glance data 

• Bose Premium Audio System for rich, immersive sound 

• Rear Camera Mirror and Bed View Camera for enhanced visibility 

Safety & Driver Assistance 

• GMC Pro Safety & Pro Safety Plus for advanced driver awareness 

• Forward Collision Alert with Automatic Emergency Braking 

• Lane Keep Assist with Lane Departure Warning 

• Rear Cross Traffic Braking & Rear Pedestrian Alert 

• HD Surround Vision giving a 360° high-definition overhead view 

• Front & Rear Park Assist and Following Distance Indicator 

• IntelliBeam Auto High Beams for smart illumination 

• Teen Driver Mode and Buckle-to-Drive for added security controls 

Exterior Styling & Utility 

• Dynamic Blue Metallic Exterior delivering a deep, rich, athletic finish 

• 18" Machined Aluminum Wheels wrapped in aggressive Goodyear Wrangler Duratrac tires 

• AT4 Body-Color Front & Rear Bumpers with bold red recovery hooks 

• LED Signature Lighting with fog lamps, cargo lights, and perimeter lighting 

• GMC MultiPro Tailgate with multiple configurations for loading, step access, or work surface 

• EZ Lift, Power Lock & Release Tailgate for convenience on the go 

• Spray-On Bedliner and 120V Bed-Mounted Outlet ready for worksites or weekend gear 

• Rear Bumper CornerSteps and Chrome/Body-Color Assist Steps for easy cabin and bed access 

• Steel Pickup Box Inner Panels for durability and long-life toughness 

The 2023 GMC Sierra 1500 AT4 blends diesel strength, premium technology, and true off-road capability. Bold, confident, and adventure-ready — it’s a truck built for those who expect their vehicle to perform as fiercely as they do.