Experience the Pinnacle of Capability and Comfort in the 2026 GMC Sierra 2500HD DenaliThis exceptional 2026 GMC Sierra 2500HD Denali is a true powerhouse, blending exceptional performance, advanced technology, and premium refinement. Outfitted with a robust Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission, this Sierra 2500HD delivers uncompromising capability, effortlessly handling the toughest jobs.- 6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible) (Includes (K05) Engine Block Heater) (470 hp 350.5 kW @ 2800 rpm, 975 lb-ft of torque 1322 Nm @ 1600 rpm)- AM/FM radio: SiriusXM with 360L- Radio: AM/FM Stereo with Premium GMC Infotainment System- SiriusXM with 360L Trial Subscription- Automatic temperature control- Electric Rear-Window Defogger- 120-Volt Bed Mounted Power Outlet- Driver Memory- Power driver seat- Power windows- Push Button Start- Steering wheel mounted audio controls- Lane Departure Warning System- Speed-sensing steering- Delay-off headlights- Front fog lights- IntelliBeam Automatic High Beam on/Off- LED Smoked Amber Roof Marker Lamps- Spray-on Pickup Bedliner with GMC Logo- 2 USB Ports- Automatic Emergency Braking- Bed View Camera with Two Trailer Camera Provisions- Driver vanity mirror- Floor-Mounted Center Console- Forward Collision Alert- Genuine wood dashboard insert- HD Surround Vision- Heated steering wheel- Outside temperature display- Passenger vanity mirror- Rear reading lights- Tilt steering wheel- Trip computer- Wireless Phone ProjectionElevating the driving experience, the Sierra 2500HD Denali boasts a wealth of premium features that cater to your every need. From the luxurious leather-appointed seating with heating and ventilation, to the advanced Bose audio system and intuitive infotainment, this truck is designed to deliver unparalleled comfort and convenience.Backed by GMC's commitment to quality and innovation, the 2026 Sierra 2500HD Denali is the ultimate expression of capability and refinement. Experience the difference for yourself by scheduling a test drive today.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: $2000 - Bonus Cash. Exp. 06/30/2026 Price includes dealer added accessories.