Used 2021 Gmc Sierra 1500 AT4

The 2021 GMC Sierra 1500 AT4 Crew Cab is a full-size pickup that combines rugged off-road capability, powerful performance, and modern technology, designed for drivers who want a truck ready for both adventure and everyday use. Finished in Summit White, this Sierra AT4 stands out with its bold blacked-out grille, LED headlamps with signature daytime running lights, and sculpted hood that conveys strength and capability. AT4-specific badging, skid plates, a 2-inch factory lift, 18-inch black alloy wheels, and tow hooks enhance its aggressive, off-road-ready exterior, while body-colored mirrors and a durable bed with spray-in liner provide practical functionality for hauling gear or equipment. Under the hood, the 2021 Sierra 1500 AT4 is powered by a 5.3-liter EcoTec3 V8 engine paired with a 10-speed automatic transmission, producing 355 horsepower and 383 lb-ft of torque. This responsive powertrain delivers smooth acceleration, capable towing-up to 8,200 pounds when properly equipped-and confident performance on highways, city streets, and rugged off-road terrain. Standard four-wheel drive, along with AT4-specific suspension tuning, off-road shock absorbers, and a locking rear differential, ensures maximum traction and stability in challenging conditions. Inside, the Sierra AT4 offers a spacious and comfortable cabin designed for both convenience and versatility. Jet Black leather-appointed seating with heated front seats, a 10-way power-adjustable driver seat, and a 4-way power front passenger seat provide comfort for long drives. The rear bench accommodates three passengers, while dual-zone automatic climate control, soft-touch surfaces, and a leather-wrapped steering wheel enhance the interior's premium feel. Fold-flat rear seats and multiple storage compartments add practicality for passengers and cargo. Technology in the 2021 Sierra AT4 is modern and intuitive, anchored by an 8-inch GMC Infotainment 3 system with Apple CarPlay, Android Auto, and Bluetooth connectivity. A premium Bose 8-speaker audio system delivers clear, immersive sound, while multiple USB ports and wireless charging keep devices powered. Additional features include a digital driver information display, remote start, keyless entry with push-button ignition, and an available multi-camera trailering system for enhanced off-road and towing confidence. Safety is a priority in the Sierra AT4, featuring Forward Collision Alert, Automatic Emergency Braking, Lane Keep Assist with Lane Departure Warning, Rear Cross Traffic Alert, and Side Blind Zone Alert. The reinforced high-strength steel frame and advanced airbag system provide robust protection, while off-road enhancements give drivers confidence on rugged trails.

• AWD
• LED headlamps
• Skid plates
• 2-inch factory lift
• 18-inch black alloy wheels
• Tow hooks
• Four-wheel drive
• AT4-specific suspension tuning
• Off-road shock absorbers
• Locking rear differential
• Heated front seats
• Leather-appointed seating
• Power-adjustable driver seat
• Power front passenger seat
• Dual-zone automatic climate control
• Leather-wrapped steering wheel
• Fold-flat rear seats
• Multiple storage compartments
• GMC Infotainment 3 system
• Apple CarPlay

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