Contact Legacy Buick GMC today for information on dozens of vehicles like this 2026 GMC Sierra 2500HD Denali. This GMC includes: LPO, BODY COLOR WHEEL ARCH MOLDINGS GVWR, 11,350 LBS ONYX BLACK DENALI RESERVE PACKAGE Generic Sun/Moonroof Sun/Moonroof GOOSENECK / 5TH WHEEL PREP PACKAGE ALTERNATORS, DUAL, 220-AMPS PRIMARY, 170-AMPS AUXILIARY TRANSMISSION, 10-SPEED AUTOMATIC A/T 10-Speed A/T ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE Diesel Fuel 8 Cylinder Engine Turbocharged ASSIST STEPS, POWER-RETRACTABLE, WITH LED PERIMETER LIGHTING AND BRIGHT ACCENT Power Retractable Running Boards Running Boards/Side Steps *Note - For third party subscriptions or services, please contact the dealer for more information.* Today's luxury vehicle is not just about opulence. It's about a perfect balance of performance, comfort and attention to detail. This 2026 GMC Sierra 2500HD Denali is the perfect example of the modern luxury. At home in the country and in the city, this 2026 4WD GMC Sierra 2500HD Denali has been wonderfully refined to handle any occasion. Smooth steering, superior acceleration and a supple ride are just a few of its qualities. You've found the one you've been looking for. Your dream car. Dealer Disclosure: Prices do not include state and local tax, title, license, notarial fees, convenience fees, documentary fees, and any finance charges. All prices, specifications and availability subject to change without notice. Contact dealer for most current information .Not available with special finance, lease and some other offers.