CARFAX 1-Owner. Heated/Cooled Leather Seats, Navigation, Moonroof, Back-Up Camera, Heated Rear Seat, Aluminum Wheels, 4x4, Trailer Hitch, TRANSMISSION, ALLISON 10-SPEED AUTOMA... AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM.. SEE MORE!<br /><br />KEY FEATURES INCLUDE<br />Leather Seats, Sunroof, 4x4, Heated Driver Seat, Heated Rear Seat, Cooled Driver Seat, Back-Up Camera, Running Boards, Diesel, Premium Sound System, Satellite Radio, Onboard Communications System, Trailer Hitch, Aluminum Wheels, Remote Engine Start Privacy Glass, Keyless Entry, Steering Wheel Controls, Heated Mirrors, Electronic Stability Control. <br /><br />OPTION PACKAGES<br />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 AT4X with Volcanic Red Tintcoat exterior and Obsidian Rush interior features a 8 Cylinder Engine with 401 HP at 5200 RPM*. <br /><br />AFFORDABILITY<br />This Sierra 2500HD is priced $20,200 below J.D. Power Retail. <br /><br />PURCHASE WITH CONFIDENCE<br />CARFAX 1-Owner <br /><br />MORE ABOUT US<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 4/11/2026. Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase. <br />