This 2026 GMC Sierra 2500HD AT4 is offered to you for sale by Legacy Buick GMC. This GMC includes: GOOSENECK / 5TH WHEEL PREP PACKAGE 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 TIRES, LT275/65R20 Tires - Rear On/Off Road Tires - Front On/Off Road LPO, BODY COLOR WHEEL ARCH MOLDINGS STERLING METALLIC *Note - For third party subscriptions or services, please contact the dealer for more information.* You deserve a vehicle designed for higher expectations. This GMC Sierra 2500HD AT4 delivers with a luxurious, well-appointed interior and world-class engineering. At home in the country and in the city, this 2026 4WD GMC Sierra 2500HD AT4 has been wonderfully refined to handle any occasion. Smooth steering, superior acceleration and a supple ride are just a few of its qualities. This is the one. Just what 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.