RECALL NOTICE: Some vehicles offered for sale may be subject to unrepaired manufacturer safety recalls. To determine the recall status of a vehicle, visit https://www.nhtsa.gov/recalls.Serving drivers across Florida and Georgia, our dealership is your trusted source for quality used cars and the latest new GMC and Buick models. We offer competitive pricing, reliable local service. We have a wide selection of trucks and SUVs. We also have a great selection of Certified Used and New vehicles to fit your needs. With Clicklane, buying or selling your vehicle online has never been easier. When you're ready for faster, simpler vehicle buying experience. We are here to help and make things simple. All our prices includes the $799 dealer fee and the $198.50 private tag agency charge.- **ALL WHEEL DRIVE**- **BLUETOOTH, HANDS-FREE**- **KEYLESS ENTRY**- **LOCAL TRADE-IN**- **REARVIEW CAMERA**- ASSIST STEPS, POWER RETRACTABLE, BLACK- HEAVY DUTY FRONT SPRING/CAMPER PACKAGE- COASTAL DUNE- TAN- ENGINE BLOCK HEATER- ALTERNATOR, 220 AMP- 6.6L V8 DIESEL TURBOCHARGED- MAX TRAILERING PACKAGE- AT4 PREMIUM PLUS PACKAGE- TRAILER TIRE PRESSURE MONITOR SENSORS- 3 YEARS SIRIUSXM- BLACK BADGING PACKAGE- HIGH IDLE SWITCHThis 2026 GMC Sierra 2500HD AT4 is a powerful and capable truck built to handle any task. With its rugged Duramax 6.6L V8 Turbodiesel engine, 10-speed automatic transmission, and 4-wheel drive, this Sierra is ready to take on the toughest jobs. The AT4 trim adds premium features like power-retractable assist steps, a high-clearance off-road suspension, and an array of advanced technology to make your driving experience more comfortable and convenient.Inside, you'll find a spacious and well-appointed cabin with premium materials and thoughtful amenities. The Bose premium audio system, heated and ventilated front seats, and wireless charging ensure you and your passengers enjoy every mile. Towing and trailering are a breeze thanks to the Max Trailering Package, which includes a heavy-duty frame, suspension, and hitch provisions.Whether you're hauling heavy loads, navigating off-road terrain, or simply seeking a capable and luxurious daily driver, this 2026 GMC Sierra 2500HD AT4 is the perfect choice. With low mileage and a well-equipped interior, this truck is a must-see. Visit our dealership today to experience it for yourself.Here at Coggin Buick GMC, we take pride in offering one of Northeast Florida's best selections of high-quality used vehicles backed by the same commitment to excellence you'll find in our new GMC and Buick lineup. Every vehicle we service is cared for with OEM-approved parts. Check out our 4.4 Google rating and when you are ready, we are here to assist with a great car buying experience.