Used 2020 GMC Sierra 1500 AT4 | V8 | 4WD | Off Road Perfomance Package

The 2020 GMC Sierra 1500 AT4 4WD blends aggressive factory-lifted off-road capability, premium cabin luxury, massive 6.2L V8 muscle, and work-ready pickup utility engineered to handle severe Canadian winters and backwoods terrain.

Mechanical and Performance: 6.2L EcoTec3 V8 Muscle and Factory Off-Road Package

Under the hood, the Sierra 1500 AT4 is powered by a high-output 6.2L EcoTec3 V8 engine with Dynamic Fuel Management (DFM) generating an authoritative 420 horsepower and 460 lb-ft of torque. Power is channeled through a smooth-shifting 10-speed automatic transmission paired with an Autotrac 2-speed transfer case with active 4WD (Auto, 2WD, 4WD High, and 4WD Low). Purpose-built for rugged backcountry capability and snow-rutted roads, the AT4 comes standard with a factory 2-inch suspension lift, off-road-tuned Rancho monotube shock absorbers, skid plates, and an Eaton G80 heavy-duty automatic locking rear differential. Heavy-duty towing and hauling confidence is reinforced by an integrated trailer brake controller, Hill Descent Control, a max conventional towing capacity of up to 9,300 lbs (4,218 kg), and 4-wheel power-assisted anti-lock disc brakes with Duralife brake rotors.

Safety Systems: Driver Alert Package and ProGrade Trailering Awareness

Occupant safety is anchored by high-strength boxed steel frame construction and advanced active driver assistance systems. Frontal collision mitigation and highway awareness are supported by Forward Collision Alert, Automatic Emergency Braking, and Front Pedestrian Braking. Lane changes and trailering are safeguarded by Lane Change Alert with Side Blind Zone Alert, Rear Cross Traffic Alert, and Lane Keep Assist with Lane Departure Warning. Tight parking and off-road trail navigation are simplified by Front and Rear Park Assist and an HD Rear Vision Camera with hitch guidance lines, backed by the ProGrade Trailering System featuring pre-departure checklists and trailer tire pressure monitoring.

Technology and Connectivity: GMC Infotainment System and Premium Bose Sound

The driver-focused cabin centers on an 8.0-inch diagonal GMC Infotainment System touchscreen equipped with navigation, standard Apple CarPlay, and Android Auto smartphone integration. Vital driving metrics, off-road inclinometers, and safety statuses are displayed on a customizable 4.2-inch (or available 8.0-inch) Driver Information Centre. Cabin entertainment is elevated by a premium Bose 7-speaker sound system with Richbass woofer. Everyday convenience is rounded out by Keyless Open and Start with push-button ignition, a factory remote engine starter, Bluetooth wireless phone and audio streaming, a built-in Qi wireless charging pad, a 4G LTE Wi-Fi hotspot capability, and multiple illuminated USB charging and data ports in both rows.

Design and Interior: Exclusive AT4 Styling, MultiPro Tailgate, and Canadian Winter Warmth

The exterior commands attention with a black chrome front grille, body-coloured front and rear bumpers, signature red vertical front recovery tow hooks, full LED reflector headlamps with C-shaped LED daytime running lights, LED fog lamps, and bold 18-inch machined aluminum wheels fitted with Goodyear Wrangler DuraTrac off-road tires (or available 20-inch wheels). Truck-bed utility is headlined by the world-first GMC MultiPro Tailgate (featuring 6 functional load, step, and work surface positions), a factory spray-on bedliner, and a 120-volt cargo-bed power outlet. Purpose-built for freezing Canadian mornings, the cabin is trimmed in exclusive Jet Black leather seating surfaces with Kalahari contrast accents and comes standard with ventilated and multi-stage heated front bucket seats, heated rear outboard seats, a heated leather-wrapped steering wheel, and heated power-folding side mirrors. Everyday comfort is completed by a 10-way power driver’s seat with power lumbar and memory, Dual-Zone Automatic Climate Control, innovative rear seatback storage compartments, and versatile 60/40 split-folding rear bench seats opening to a cavernous, flat load floor.

Command Your Ultimate Winter-Ready Off-Road Full-Size Truck Today!

With its massive 420-horsepower 6.2L V8 engine, factory 2-inch lift, Eaton locking rear differential, revolutionary MultiPro tailgate, and comprehensive suite of heated Canadian cold-weather amenities, the 2020 GMC Sierra 1500 AT4 4WD is built to dominate every highway haul and remote trail. Contact our dealership sales specialists today to check current vehicle availability, explore flexible financing solutions, and book your priority test drive!

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