The 2026 GMC Sierra 2500HD Denali Ultimate delivers uncompromising capability and refined luxury. This exceptional heavy-duty pickup is engineered to conquer any task with its robust Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission. Dressed in a stunning Silver exterior, the Sierra 2500HD Denali Ultimate exudes confidence and sophistication.- LPO, CARGO TIE-DOWN RINGS, SET OF 4 (dealer-installed)- LPO, GMC MULTIPRO TAILGATE STEP LIGHTS (dealer-installed)- LPO, GMC PROTECTION PACKAGE- LPO, CARGO CONVENIENCE PACKAGE- 3 YEARS SIRIUSXM- LPO, HITCH PACKAGE- GOOSENECK / 5TH WHEEL PREP PACKAGEPacked with premium features, this Denali Ultimate model offers the ultimate in comfort, convenience, and technology. Enjoy the premium Bose 12-speaker audio system, wireless charging, and the advanced GMC Infotainment System with 360L. The Heads-Up Display, Surround Vision camera, and Trailer Camera Provisions provide exceptional visibility and confidence when towing.Elevate your driving experience with the Sierra 2500HD Denali Ultimate's exceptional off-road capabilities, thanks to the X31 Off-Road Package. Tackle any terrain with the 2-speed active transfer case, off-road suspension, and all-terrain tires. The Spray-on Bedliner and Cargo Tie-Down Rings ensure your gear stays secure, while the Gooseneck/5th Wheel Prep Package prepares you for your next big adventure.Indulge in the ultimate combination of power, technology, and luxury with the 2026 GMC Sierra 2500HD Denali Ultimate. Experience the difference at Southwest Buick GMC Lawton.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.