2026 GMC Sierra 2500HD Denali Ultimate. This powerful and refined pickup is engineered to conquer any terrain, offering uncompromising capability and unparalleled luxury.- 4X4 Off-Road Package- Technology Package- X31 Off-Road Package- Premium GMC Infotainment System- Steering Wheel Audio Controls- Push Button Start- Remote keyless entry- Remote Vehicle Starter System- Lane Departure Warning System- Off-Road Suspension- Inside Rearview Auo-Dimming Rear Camera Mirror- Multicolor 15"" Diagonal Head-Up Display- Hill Descent Control- Power SunroofElevate your driving experience with the Duramax 6.6L V8 Turbodiesel engine and 10-Speed Automatic transmission, delivering exceptional power and efficiency. Explore the great outdoors with confidence, thanks to the advanced 4WD system and off-road-focused features.Step inside the Denali Ultimate and be enveloped in unrivaled craftsmanship and premium amenities. Enjoy the Bose Premium Series 12-Speaker System, wireless charging, and a panoramic power sunroof that floods the cabin with natural light. The 16-way power-adjustable front seats with heating and ventilation ensure ultimate comfort, while the Head-Up Display and 360-degree camera system provide enhanced visibility and control.With a striking exterior design and the iconic Denali grille, this Sierra 2500HD commands attention wherever it goes. The spray-on bedliner, LED cargo lighting, and power-folding mirrors add both style and functionality. Towing and hauling are a breeze with the integrated trailer brake controller, Trailer Tire Pressure Monitor Sensors, and in-vehicle trailering system.Experience the pinnacle of capability, technology, and refinement in the 2026 GMC Sierra 2500HD Denali Ultimate. Visit Southwest Buick GMC Lawton today and discover why this exceptional truck is the perfect choice for your next adventure.Why Buy from Southwest Buick GMC LawtonSouthwest Buick GMC makes car buying straightforward with true transparent pricing, no hidden fees, and no market adjustments. We offer strong trade-in values and a wide selection of new Buick and GMC models, certified pre-owned options, and quality used vehicles. We'll buy your car even if you don't purchase from us. Proudly serving drivers in Lawton, Duncan, Chickasha, Elgin, Wichita Falls, Norman, OKC, and surrounding areas. Shop online or stop by today for a dealership experience built on honesty and efficiency. Price includes dealer added accessories.