Non-Smoker vehicle, Auto Check One Owner! Excellent Condition. Nav System, Moonroof, Heated/Cooled Leather Seats, ENGINE, DURAMAX 6.6L TURBO DIESEL V8, B20-DIESEL COMPATIBLE, Premium Sound System, Back-Up Camera, 4x4, Chrome Wheels, Bed Liner, Hitch, DRIVER ALERT PACKAGE SERVICE COMPLETED Service Work completed on this GMC Sierra 3500HD included: Complete Multi-Point Inspection, Oil Filter Change by a Factory Trained Technician, Battery Voltage Test, Tires Inspected, Brake Inspection, Emissions System Check, Professional Detailed Inside and Out, Function Test all Lights, Check the Complete Exhaust System, Cooling System Inspection, Transmission Fluid Inspection, Differential Fluid Inspection, Function Test all Options Accessories. KEY FEATURES INCLUDE Cooled Driver Seat, Onboard Communications System. GMC Denali with Stone Blue Metallic exterior and Cocoa/Dune interior features a 8 Cylinder Engine with 397 HP at 3000 RPM*. OPTION PACKAGES includes (LML) Duramax 6.6L Turbo Diesel V8 engine, (MW7) Allison 1000 6-speed automatic transmission and (Y65) Driver Alert Package, SUNROOF, POWER, (dealer-installed), includes (UFL) Lane Departure Warning, (UEU) Forward Collision Alert, and Safety Alert Seat, includes additional 7-way wiring harness is located at the rear of the pickup box attached to the rear frame cross member, includes standard equipment, Includes 12-way power driver and front passenger seat adjusters, including 4-way power lumbar control, 2-position driver memory, adjustable head restraints, (D07) floor console and storage pockets and (K4C) wireless charging (STD), GVWR, 13,025 LBS. (5908 KG) WITH DUAL REAR WHEELS, with USB ports, auxiliary jack, Bluetooth streaming audio for music and most phones, advanced phone integration featuring Apple CarPlayÂ, Pandora Internet radio and voice-activated technology for radio and phone (STD), (397 hp [296.0 kW] @ 3000 rpm, 765 lb-ft of torque [1032.8 N-m] @ 1600 rpm) Includes (K40) exhaust brake and (K05) engine block heater. with overdrive, electronic engine grade braking and tow/haul mode. VEHICLE REVIEWS KBB.com explains 'As a boulevard cruiser, the big Sierra impresses with a spacious cabin plush beyond measure and well insulated from outside wind and road noise.'. AutoCheck One Owner OUR OFFERINGS Family owned and operated, Hertrich Buick-GMC has been your Delmarva GMC dealer since 1964! We are located in the heart of the Delmarva Peninsula at 26953 Sussex Highway, Seaford, Delaware and serve as your Buick-GMC dealer with a state of the art GM Certified Sales Service Department. As your gateway to the best buying experience you will ever have, we at Hertrich Buick-GMC know that price is important that's why we will beat out the competition time and time again with our aggressive pricing. Pricing analysis performed on 7/3/2026. Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.