2021 GMC Sierra 1500 AT4 with the 3.0L Duramax Turbo-Diesel engine combines rugged capability with refined comfort, making it a standout in the full-size pickup segment. Powered by a 3.0-liter inline-six turbo-diesel engine producing 277 horsepower and 460 lb-ft of torque, this truck delivers impressive towing and hauling abilities while maintaining excellent fuel efficiency. Paired with a smooth 10-speed automatic transmission, the Sierra 1500 AT4 offers seamless performance both on highways and off-road trails.
The AT4 trim elevates the Sierras off-road prowess with features such as a factory-equipped 2-inch suspension lift, skid plates, and a locking rear differential, ensuring superior traction and ground clearance in challenging conditions. Its off-road tires and unique blacked-out grille contribute to a rugged, aggressive look that stands out on and off the pavement.
Inside, the cabin balances luxury and utility with premium materials, comfortable seating, and advanced technology. The 2021 model includes the GMC infotainment system with a large touchscreen, Apple CarPlay, Android Auto, and a built-in Wi-Fi hotspot, keeping drivers connected wherever they go. Additional convenience features like wireless charging and a head-up display further enhance the driving experience.
Safety is also a priority, with a suite of driver assistance features including forward collision alert, lane keep assist, and adaptive cruise control. Overall, the 2021 GMC Sierra 1500 AT4 3.0L is a powerful, versatile pickup that meets the demands of both work and adventure with style and capability.
