Used 2021 Gmc Sierra 1500 AT4

Recent Arrival! The 2021 GMC Sierra 1500 AT4 is a rugged full-size pickup truck designed for off-road capability, strong performance, and premium comfort. It typically comes with a 5.3-liter EcoTec3 V8 engine producing about 355 horsepower and 383 lb-ft of torque paired with a smooth 10-speed automatic transmission and standard four-wheel drive for excellent traction on rough terrain. The AT4 trim includes off-road features such as a factory-lifted suspension, skid plates, and a two-speed transfer case that enhance its ability on challenging trails. Inside, the truck offers a spacious and refined cabin with leather-trimmed seating, heated front seats, dual power front seats, a leather-wrapped steering wheel, and a modern infotainment system with Bluetooth connectivity, smartphone integration, and available navigation. It also delivers strong capability with towing capacity that can reach around 9,200 pounds depending on configuration, along with a durable cargo bed designed for hauling and work tasks. Combining rugged off-road features with premium interior comfort and advanced technology, the 2021 GMC Sierra 1500 AT4 is a versatile truck built for both adventure and everyday driving.