2021 GMC Sierra 1500 AT4 4WD Duramax Diesel – Rugged Capability Meets Premium Comfort in Austin, TXTake your truck experience to the next level with this 2021 GMC Sierra 1500 AT4 4WD Crew Cab, featuring a powerful and efficient 3.0L Duramax Turbo-Diesel inline-six engine paired with a 10-speed automatic transmission. Finished in Steel Metallic with a refined Jet Black interior, this GMC Sierra AT4 delivers bold styling, impressive capability, and the premium comfort truck buyers want in a full-size 4x4 pickup.With 99,300 miles, this pre-owned GMC Sierra 1500 AT4 is an excellent option for drivers searching for a capable diesel truck with off-road-inspired styling, everyday drivability, and the versatility to handle work, travel, and weekend adventures throughout Central Texas.Vehicle Highlights2021 GMC Sierra 1500 AT4 4WD3.0L Duramax Turbo-Diesel I6 Engine10-Speed Automatic TransmissionFour-Wheel Drive (4WD) for added traction and capabilityCrew Cab Configuration with versatile passenger and cargo spaceSteel Metallic ExteriorJet Black Interior99,300 MilesPremium AT4 truck styling with a rugged, adventure-ready appearanceWhy Consider This GMC Sierra 1500 AT4?The GMC Sierra 1500 AT4 diesel combines the versatility of a full-size pickup with the benefits of a turbo-diesel powertrain. The 3.0L Duramax is designed to deliver strong everyday performance and appealing highway efficiency, making this Sierra a compelling choice for commuters, road-trip enthusiasts, truck owners, and drivers who want diesel capability without stepping up to a heavy-duty truck.Its four-wheel-drive system, bold AT4 appearance, and spacious Crew Cab make it a versatile option for navigating Austin traffic, traveling across Texas, or heading out for a weekend getaway. Whether you're shopping for a used GMC Sierra 1500, a Duramax diesel pickup, or a premium 4WD Crew Cab truck, this AT4 deserves a closer look.Shop Covert Ford in Austin for a wide selection of pre-owned trucks and SUVs. Our team is ready to help you explore your options and schedule a test drive.Shop Used Trucks at Covert Ford in Austin, TexasSearching for a used GMC Sierra 1500 AT4 near Austin, TX? Visit Covert Ford to explore this diesel-powered 4x4 and discover your next truck.We welcome truck shoppers from Austin, Round Rock (78664, 78665, 78681), Georgetown (78626, 78628), Cedar Park (78613), Leander (78641), Pflugerville (78660), Hutto (78634), Taylor (76574), Buda (78610), Kyle (78640), Lakeway (78734), Bee Cave (78738), Dripping Springs (78620), San Marcos (78666), New Braunfels (78130, 78132), San Antonio (78201–78258), and surrounding Central Texas communities.Call Covert Ford at 512-345-4343 to learn more about this 2021 GMC Sierra 1500 AT4, ask about availability, and schedule your test drive.Visit www.covertford.com to browse our inventory and find your next pre-owned truck.