2021 GMC Sierra 1500

About this car

The 2021 GMC Sierra 1500 AT4 is the ultimate combination of rugged capability and refined comfort. Powered by a 3.0L I6 Duramax Turbo-Diesel engine, it delivers impressive torque and fuel efficiency—perfect for everyday driving and weekend adventures. Designed with premium features and off-road readiness, the AT4 trim has bold styling, a factory 2-inch lift, and an advanced 4WD system. Inside, you’ll find a well-appointed cabin with leather-trimmed seats, heated and ventilated front seats, and a Bose premium sound system that enhances every drive. Tech highlights include Apple CarPlay, Android Auto, and a user-friendly infotainment system, while advanced safety and driver assistance features offer confidence on any terrain. Whether you're towing, commuting, or exploring off the beaten path, the Sierra AT4 delivers performance, luxury, and versatility in one rugged package. At Keysy, we prioritize moving cars quickly rather than inflating prices with high markups, which is why our vehicles typically sell in under 14 days. We believe in being 100% transparent—just a $444 doc fee and no surprises. Plus, you can purchase this GMC 100% online, trade in your current vehicle, and get the best financing rates available. You can even calculate delivery to your location. Let us know how we can help!

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