Sterling Metallic 2025 GMC Sierra 3500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel Sierra 3500HD Denali Ultimate, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 4WD, Alpine Umber Leather, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, Auto-Dimming Inside Rearview Mirror w/Camera, Bed View Camera w/2 Trailer Camera Provisions, Bose Premium Series 12-Speaker System, Deep-Tinted Glass, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front Rain-Sensing Wipers, Gooseneck/5th Wheel Prep Package, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Hill Descent Control, Hitch Guidance w/Hitch View, In-Vehicle Trailering App, Keyless Open & Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Multicolor 15'' Diagonal Head-Up Display, Power Front Windows w/Passenger Express Up/Down, Power Sliding Rear Window w/Defogger, Power Sunroof, Preferred Equipment Group 5SB, ProGrade Trailering System, Push Button Start, Rear Cross Traffic Alert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, Signature Denali Ultimate Grille in Vader Chrome, SiriusXM w/360L Trial Subscription, Spray-On Pickup Bedliner w/GMC Logo, Steering Wheel Audio Controls, Technology Package, Trailer Camera Provisions, Trailer Side Blind Zone Alert, Trailer Tire Pressure Monitor Sensors, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver & Front Passenger Seats, Wireless Charging, Wireless Phone Projection, X31 Off-Road Package, 12 Speakers, 16-Way Power Driver Seat Adjuster w/Lumbar, 16-Way Power Passenger Seat Adjuster w/Lumbar, 220 Amp Alternator, 3.42 Rear Axle Ratio, 4-Wheel Disc Brakes, ABS brakes, Air Conditioning, Alloy wheels,