Used 2023 GMC Sierra 1500 AT4

The 2023 GMC Sierra 1500 AT4 combines rugged, off-road-ready styling with advanced technology, everyday practicality, and all-terrain performance. Powered by a durable engine and paired with a smooth 10-speed automatic transmission, this full-size pickup delivers confident acceleration, seamless towing, and exceptional composure on highways and trails alike. With its aggressive stance, distinctive AT4 design cues, and a thoughtfully crafted interior, the Sierra AT4 is ready for adventure — whether you’re navigating city streets or tackling challenging off-road terrain. 

Performance & Capability 

• Engine: Available Duramax® 3.0L Turbo-Diesel or V8 engine options for powerful performance and reliable towing 

• Transmission: 10-speed automatic transmission for smooth, efficient gear changes 

• Drivetrain: Advanced 4WD system with Autotrac® 2-speed transfer case and Traction Select System for all-terrain confidence 

• Axle Ratio: 3.23 rear axle for balanced power delivery and efficiency 

• Suspension: Off-road suspension package

• Towing Technology: Factory-installed trailer brake controller, hitch guidance with Hitch View, and trailering app compatibility 

Drive Assist & Safety 

• GMC Pro Safety™ and Sierra Safety Plus features including Forward Collision Alert, Automatic Emergency Braking, Lane Keep Assist, Rear Cross Traffic Braking, and Rear Pedestrian Alert 

• HD Surround Vision camera system with Front and Rear Park Assist 

• Teen Driver Mode and Tire Pressure Monitoring with Brake Wear Indicator 

Winter Readiness & All-Weather Features 

• Heated front seats, heated steering wheel, and heated rear outboard seats for cold-weather comfort 

• Remote vehicle start to pre-condition the cabin before you drive 

• Automatic tri-zone climate control and rear window defogger 

• All-weather floor liners and durable interior surfaces for off-road or winter conditions 

Comfort & Convenience 

• Front bucket seats with leather-appointed trim, power-adjustable driver and passenger seating, and memory settings 

• Power sliding rear window and keyless open with push-button start 

• Wireless Apple CarPlay® and Android Auto™ integration 

• 13.4" GMC premium infotainment touchscreen with Google built-in, navigation, and available Bose® premium audio system 

• Rear seat with storage package and multiple USB ports for connectivity 

• 120V AC power outlets in cabin and bed for tools or accessories 

Exterior Styling & Utility 

• AT4-exclusive 18 machined aluminum wheels with off-road tires 

• Body-color front and rear bumpers, LED fog lamps, and signature grille with black accents 

• Multipro tailgate for configurable loading, step access, and work surface 

• LED cargo bed lighting, red front recovery hooks, and perimeter lighting for off-road readiness 

• Spray-on bedliner and EZ Lift tailgate for rugged durability 

Whether you’re towing a trailer, heading out for a weekend escape, or taking on tough terrain, the 2023 GMC Sierra 1500 AT4 delivers confidence, capability, and modern comfort in every season.