CARFAX 1-Owner. Heated/Cooled Leather Seats, Navigation, Bed Liner, Premium Sound System, Running Boards, Heated Rear Seat, 4x4, Aluminum Wheels, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, 3 YEARS SIRIUSXM READ MORE!<br /><br />KEY FEATURES INCLUDE<br />Leather Seats, 4x4, Heated Driver Seat, Heated Rear Seat, Cooled Driver Seat, Running Boards, Premium Sound System, Onboard Communications System, Trailer Hitch, Aluminum Wheels, Remote Engine Start, Dual Zone A/C, Blind Spot Monitor, Cross-Traffic Alert, WiFi Hotspot. Keyless Entry, Privacy Glass, Steering Wheel Controls, Heated Mirrors, Electronic Stability Control. <br /><br />OPTION PACKAGES<br />ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.), TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display, 3 YEARS SIRIUSXM, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE includes color touch-screen, multi-touch display, AM/FM stereo, Bluetooth® streaming audio for music and most phones; featuring wireless Android Auto® and Apple CarPlay® capability for compatible phones (STD), TRANSMISSION, ALLISON 10-SPEED AUTOMATIC. GMC Denali with Onyx Black exterior and Atmosphere/Brownstone interior features a 8 Cylinder Engine with 470 HP at 2800 RPM*. <br /><br />A GREAT TIME TO BUY<br />This Sierra 2500HD is priced $11,700 below J.D. Power Retail. <br /><br />BUY WITH CONFIDENCE<br />CARFAX 1-Owner <br /><br />WHO WE ARE<br />Here at Colonial Buick GMC, we work hard to find you the perfect new or used car, truck, SUV, or crossover that best fits your needs. Looking for parts or need an oil change? Colonial Buick GMCs got you covered there too. <br /><br />Pricing analysis performed on 5/1/2026. Horsepower calculations based on trim engine configuration. Please conf