This GMC Sierra 2500HD Has Many Features and is well equipped Including, 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather. This 2026 GMC Sierra 2500HD AT4 in Onyx Black features: 2026 GMC Sierra 2500HD AT4 4WD Duramax 6.6L V8 TurbodieselAll prices plus sales tax and tag. A Better Way To Buy.BEDLINER, DIESEL, BACK-UP CAMERA, 4X4, LEATHER, HEATED REAR SEATS, HEATED FRONT SEATS, COOLED FRONT SEATS, HEATED STEERING WHEEL, NAVIGATION, LANE DEPARTURE WARNING, BLUETOOTH®, SUNROOF, REAR PARKING AID, MP3 Player, BLIND SPOT MONITORING, KEYLESS ENTRY, SAT RADIO, 20 WHEELS, TAILGATE STEP, ALLOY WHEELS.