Contact Legacy Buick GMC today for information on dozens of vehicles like this 2025 GMC Sierra 3500HD Denali. This GMC includes: PO, HARD FOLDING TRUCK BED COVER BY REALTRUCK ADVANTAGE Pickup Bed Tonneau Cover ASSIST STEPS, POWER-RETRACTABLE Power Retractable Running Boards Running Boards/Side Steps GOOSENECK / 5TH WHEEL PREP PACKAGE Tow Hitch TRANSMISSION, ALLISON 10-SPEED AUTOMATIC A/T 10-Speed A/T ALTERNATORS, DUAL, 220-AMPS PRIMARY, 170-AMPS AUXILIARY GVWR, 12,100 LBS ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE Diesel Fuel 8 Cylinder Engine Turbocharged DENALI RESERVE PACKAGE Generic Sun/Moonroof Sun/Moonroof DOWNPOUR METALLIC LPO, HITCH PACKAGE Tow Hitch *Note - For third party subscriptions or services, please contact the dealer for more information.* There's a level of quality and refinement in this GMC Sierra 3500HD Denali that you won't find in your average vehicle. Do you encounter heavy snow, rain or mud when driving? No problem. With this vehicle, you've got the power of 4WD to help you overcome the toughest terrain. You can finally stop searching... You've found the one you've been looking for. 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.