"With its strong, elevated stance, revolutionary capabilities, innovative technologies and remarkable power, Sierra leads in the best possible way: by example. New 2024 GMC Sierra 3500HD PRO 4x4 Double Cab Long Box in Summit White with Jet Black Cloth Interior Engine: 6.6L V8 DuraMax Turbo Diesel Transmission: 10-Speed Automatic Transmission Key Features: Push Button Start, LED Projector Headlamps, IntelliBeam Auto High Beam, Sierra HD Pro Safety, Bluetooth for Phones, 7"" GMC Infotainment System with Color Touchscreen, Hitch Guidance, Wireless Phone Projection Packages / Options: Power Take-Off, Integrated Trailer Brake Controller, Cruise Control, 120 Volt Power Outlet, Backup Alarm, Sirius XM, Heavy Duty Front Springs Upfit: Scelzi / SE Inc Flatbed"