38 photos
2020 GMC Sierra 1500 Crew Cab
AT4 Pickup 4D 5 3/4 ft51,014 miles
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Why You’ll Love This Sierra 1500
The AT4 sits near the top of the Sierra 1500 lineup, landing above the SLT and below the Denali within GMC’s trim structure. With a factory‑installed 2-inch suspension lift with off‑road tuned Rancho shocks, the versatile GMC MultiPro Tailgate, and leather‑appointed heated and ventilated front seats, it blends confident trail capability with everyday comfort.
AT4 Premium Package
Originally valued at $2,855, this package adds Ultrasonic Front and Rear Park Assist, Lane Change Alert with Side Blind Zone Alert, a Bose 7-Speaker Sound System, Wireless Charging, and GMC Infotainment with Navigation.
Technology Package
Originally valued at $2,125, this package enhances situational awareness with HD Surround Vision, a 15-inch Head-Up Display, an 8-inch Driver Information Center and a Rear Camera Mirror.
Driver Alert Package II
Originally valued at $1,095, this package enhances driver confidence with Forward Collision Alert, Lane Keep Assist, Automatic Emergency Braking and Adaptive Cruise Control.
AT4 CarbonPro Edition
Originally valued at $560, this package features a CarbonPro bed, a MulitPro Audio System by Kicker, Gloss Black Dual Exhaust Tips and a unique grille surround.
6.2L EcoTec3 V8 Engine
Originally valued at $2,495, this powerful engine delivers increased horsepower and torque for enhanced performance and towing capability.
Cat-Back Performance Exhaust
Originally valued at $1,695, this performance exhaust enhances engine sound and optimizes exhaust flow for improved power delivery.
Power Sunroof
Originally valued at $995, a power sunroof opens the cabin to natural light and fresh air with convenient push-button operation.
CarbonPro bed
Provides a durable, lightweight and corrosion-resistant cargo bed, enhancing utility and longevity.
World's First Six-Function GMC MultiPro Tailgate
Provides six distinct functions, including a primary gate, load stop, full-width step and inner gate load stop for enhanced cargo management and access.
Factory-installed 2-inch suspension lift
Increases ground clearance and approach angle for improved off-road capability.
Off-road tuned Rancho monotube shock absorbers
Delivers enhanced damping and control over rough terrain for a smoother ride and improved handling off-road.
Leather-appointed front heated and ventilated seats
Offers year-round comfort with heating for cold weather and ventilation for warmer days.
Adventure-ready engineering
The AT4 trim is engineered for serious off-road capability and rugged styling, ready for challenging terrain.
2-speed AutoTrac transfer case
Provides seamless shifting between 2WD and 4WD modes, adapting to changing road conditions for optimal traction.
Automatic locking rear differential
Engages automatically when wheel slip is detected, providing maximum traction in challenging off-road or low-traction situations.
Red vertical recovery hooks
Offers robust and easily accessible points for vehicle recovery in off-road scenarios.
Spray-on bedliner with AT4 logo
Protects the cargo bed from scratches, dents and corrosion and features the distinctive AT4 logo.
Heated steering wheel
Warms the steering wheel for added comfort in colder weather.
Balanced V8 capability
Provides balanced power and capability with a 5.3L V8 engine, 10-speed automatic transmission and 4WD, featuring Dynamic Fuel Management for optimized performance.
Traction Select System with Off-Road mode
Allows selection of different drive modes to optimize performance for various terrains and conditions.
Integrated dual exhaust
Provides a distinctive exhaust note and contributes to the vehicle's rugged aesthetic.
LED headlamps and taillamps with signature C-shape lighting
Offers bright, efficient illumination and a distinctive lighting signature for enhanced visibility.
Hill Descent Control
Manages vehicle speed on steep declines, allowing for controlled descents without constant brake application.
Integrated trailer brake controller
Provides seamless control of electric trailer brakes, enhancing safety and stability when towing.
Heated rear outboard seats
Offers additional comfort for rear passengers during colder conditions.
StabiliTrak with Traction Control
Enhances vehicle stability and traction, helping to maintain control in challenging driving conditions.
Hill Start Assist
Prevents rolling backward when starting on uphill grades, providing added confidence.
18-inch machined aluminum wheels
Machined 18-inch aluminum wheels provide a distinctive appearance and sturdy foundation for the vehicle.
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