"Dealer Discount of $4,000 off MSRP Onyx Black 2026 GMC Sierra 2500HD Denali Ultimate 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 2026 GMC Sierra 2500HD Denali Ultimate for sale St Augustine, FL, Sierra 2500HD Denali Ultimate, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Onyx Black, 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, Bed View Camera with Two 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 and Front Outboard Passenger Seats, Hill Descent Control, Inside Rearview Auo-Dimming Rear Camera Mirror, Keyless Open and Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Max Trailering Package, Multicolor 15"" Diagonal Head-Up Display, Off-Road Suspension, OnStar Services Capable, Power Front Passenger Windows with Express Up/Down, Power Sliding Rear Window with Defogger, Power Sunroof, Preferred Equipment Group 5SB, Push Button Start, Rear Cross Traffic Alert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, Signature Denali Ultimate Grille in Vadar Chrome, SiriusXM with 360L Trial Subscription, Spray-on Pickup Bedliner with GMC Logo, Steering Wheel Audio Controls, Technology Package, Trailer Cam Provisions and Trailer Viewing Software, Trailer Side Blind Zone Alert, Trailer Tire Pressure Monitor Sensors, Ultrasonic Front and Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver and Front Passenger Seats, Wireless Charging, Wireless Phone Projection, X31 Off-Road Package. Prices do not include tax, tag, title, registration, any dealer-installed accessories, or dealer-provided benefits. Additional fees include a documentary fee of $994, and an Electronic Registration Filing Fee of $434. Some charges represent costs and profits to the dealer for items such as inspecting, cleaning, adjusting vehicles, and preparing documents related to the sale. Pricing includes all applicable dealer discounts, manufacturer discounts and incentives. Certain offers and incentives presume financing and or trade-in through the captive lenders. Should you purchase the vehicle using other funds, or through other lending sources, certain offers and incentives may be excluded. Some of these discounts cannot be combined with GMF special APR programs. Due to supply chain challenges and limited inventory, some vehicles may be subject to additional market adjustments. We strive to update our inventory regularly, but there may be a delay between the sale of a vehicle and inventory updates. Prices, specifications, and availability are subject to change without notice. Please contact the dealer for the most current information and details."