Contact Legacy Buick GMC today for information on dozens of vehicles like this 2026 GMC Sierra 2500HD AT4. This GMC includes: GOOSENECK / 5TH WHEEL PREP PACKAGE LPO, HARD FOLDING TRUCK BED COVER BY REALTRUCK ADVANTAGE Pickup Bed Tonneau Cover ALTERNATORS, DUAL, 220-AMPS PRIMARY, 170-AMPS AUXILIARY TRANSMISSION, 10-SPEED AUTOMATIC A/T 10-Speed A/T GVWR, 11,350 LBS ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE Diesel Fuel 8 Cylinder Engine Turbocharged AT4 PREMIUM PLUS PACKAGE Generic Sun/Moonroof Sun/Moonroof Running Boards/Side Steps LPO, BODY COLOR WHEEL ARCH MOLDINGS STERLING METALLIC *Note - For third party subscriptions or services, please contact the dealer for more information.* Pull up in the vehicle and the valet will want to parked on the front row. This GMC Sierra 2500HD AT4 is the vehicle others dream to own. Don't miss your chance to make it your new ride. No matter the terrain or weather, you'll drive at ease in this 4WD-equipped vehicle. With exceptional safety features and superb handling, this 4WD was engineered with excellence in mind. The look is unmistakably GMC, the smooth contours and cutting-edge technology of this GMC Sierra 2500HD AT4 will definitely turn heads. 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.