Heated Leather Seats, Navigation, Chrome Wheels, Onboard Communications System, CD Player, Back-Up Camera, 4x4, Turbo Charged, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, DURAMAX PLUS PACKAGE, Trailer Hitch CLICK ME! KEY FEATURES INCLUDE Leather Seats, 4x4, Heated Driver Seat, Back-Up Camera, CD Player, Onboard Communications System, Trailer Hitch, Chrome Wheels, Remote Engine Start, Dual Zone A/C, WiFi Hotspot, Heated Seats, Heated Leather Seats. Keyless Entry, Privacy Glass, Steering Wheel Controls, Alarm, Electronic Stability Control. OPTION PACKAGES DURAMAX PLUS PACKAGE includes (L5P) Duramax 6.6L Turbo-Diesel V8 engine, (DQS) outside memory equipped heated power-adjustable vertical trailering mirrors, (MW7) Allison 1000 6-speed automatic transmission, (UQA) Bose premium audio system, (UD5) front and rear park assist and (IO6) 8 diagonal Color Touch Screen Navigation with GMC Infotainment, AUDIO SYSTEM, 8 DIAGONAL COLOR TOUCH SCREEN NAVIGATION WITH GMC INFOTAINMENT SYSTEM, AM/FM/SIRIUSXM, HD RADIO with USB ports, auxiliary jack, Bluetooth streaming audio for music and most phones, Pandora Internet radio and voice-activated technology for radio and phone, MIRRORS, CHROME, OUTSIDE HEATED POWER-ADJUSTABLE VERTICAL TRAILERING, MEMORY-EQUIPPED, UPPER GLASS, POWER-FOLDING AND MANUAL EXTENDING Includes integrated turn signal indicators, consisting of 51 square inch flat mirror surface positioned over a 24.5 square inch convex mirror surface with a common head and lower convex spotter glass (convex glass is not heated and not power-adjustable) and addition of auxiliary cargo lamp for backing up (helps to see trailer when backing up with a trailer) and amber auxiliary clearance lamp, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (445 hp [332 kW] @ 2800 rpm, 910 lb-ft of torque [1220 Nm] @ 1600 rpm) Includes capped fuel fill, (K40) exhaust brake, and (K05) engine block heater. TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, electronic engine grade braking and tow/haul mode. GMC SLT with Summit White exterior and Jet Black interior features a 8 Cylinder Engine with 445 HP at 2800 RPM*. EXPERTS ARE SAYING KBB.coms review says What do you call a heavy-duty pickup that can pull, haul and work like theres no tomorrow, yet offers its passengers a level of comfort and refinement on par with some luxury SUVs? You call it the 2018 GMC Sierra 2500 or 3500 HD.. OUR OFFERINGS At Big Country Auto of Madison County it is our mission to courteously, energetically, and diligently work to provide you, our customer, the best and most reliable transportation. At Big Country Auto of Madison County it is our challenge to serve you and our communities better than anyone in the industry. YOU, the customer, are our past present and future. NEVER be afraid to ask how we can serve you better today. This is our PROMISE to you. Pricing analysis performed on 10/10/2025. Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.