HILL DESCENT CONTROL, ENGINE BLOCK HEATER, 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 (STD), ALTERNATORS DUAL 150 AMPS AND 220 AMPS EACH, WHEELS 20" (50.8 CM) CHROMED CAST ALUMINUM (STD), 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., GOOSENECK / 5TH WHEEL PREP PACKAGE Hitch platform to accept Gooseneck or Fifth wheel hitch. Includes Hitch platform with tray to accept ball and drilled box holes with removable caps installed box mounted 7-pin trailer harness (similar to (UY2) harness)., SUNROOF POWER, WHITE FROST TRICOAT, MIRRORS OUTSIDE HEATED POWER-ADJUSTABLE VERTICAL TRAILERING MEMORY EQUIPPED UPPER GLASS POWER-FOLDING AND MANUAL EXTENDING CHROME 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, REAR AXLE 3.73 RATIO, LICENSE PLATE KIT FRONT, TRANSMISSION ALLISON 1000 6-SPEED AUTOMATIC ELECTRONICALLY CONTROLLED with overdrive electronic engine grade braking and tow/haul mode, SEATS FRONT FULL-FEATURE LEATHER-APPOINTED BUCKET with (KA1) heated seat cushions and seat backs. 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), SWITCH HIGH IDLE, GVWR 10 000 LBS. (4536 KG), LPO CHROME RECOVERY HOOKS, LPO HITCH PACKAGE Gooseneck ball and chain tiedown kit with case, PAINT SOLID, JET BLACK PERFORATED LEATHER-APPOINTED SEAT TRIM, DENALI PREFERRED EQUIPMENT GROUP includes standard equipment, DURAMAX PLUS PACKAGE includes (L5P) Duramax 6.6L Turbo-Diesel V8 engine and (VQY) chrome recovery hooks LPO (MW7) Allison 1000 6-speed automatic transmission (Includes (DQS) outside memory equipped heated power-adjustable vertical trailering mirrors.), TIRES LT265/60R20E ALL-TERRAIN BLACKWALL (STD), SUSPENSION PACKAGE OFF-ROAD requires 4WD models includes twin tube Rancho brand shocks and (JHD) Hill Descent Control, EXHAUST BRAKE, Lane Departure Warning, Front Collision Warning, Locking/Limited Slip Differential, Four Wheel Drive, Tow Hitch, Tow Hooks, Power Steering, Power Steering, ABS, 4-Wheel Disc Brakes, Aluminum Wheels, Tires - Front All-Terrain, Tires - Rear All-Terrain, Running Boards/Side Steps, HID headlights, Fog Lamps, Heated Mirrors, Power Mirror(s), Integrated Turn Signal Mirrors, Power Folding Mirrors, Privacy Glass, Bed Liner, AM/FM Stereo, Navigation System, Satellite Radio, MP3 Player, Bluetooth Connection, Auxiliary Audio Input, HD Radio, Requires Subscription, CD Player, MP3 Player, Satellite Radio, Requires Subscription, HD Radio, Premium Sound System, Bluetooth Connection, WiFi Hotspot, Power Driver Seat, Power Passenger Seat, Leather Seats, Bucket Seats, Heated Front Seat(s), Driver Adjustable Lumbar, Passenger Adjustable Lumbar, Seat Memory, Leather Seats, Leather Seats, Bucket Seats, Heated Front Seat(s), Cooled Front Seat(s), Front Collision Warning, Pass-Through Rear Seat, Rear Bench Seat, Adjustable Steering Wheel, Heated Steering Wheel, Steering Wheel Audio Controls, Floor Mats, Power Windows, Rear Defrost, Sliding Rear Window, Power Door Locks, Cruise Control, Security System, Adjustable Pedals, Remote Engine Start, Keyless Entry, P.