MECHANICAL Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine. Not available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.) Durabed, pickup bed GVWR, 11,025 lbs. (5001 kg) (Included and only available with CK20743 model and (L8T) 6.6L V8 gas engine with 18", 20" or 22" wheels.) Air filter, heavy-duty Air filtration monitoring Transfer case, two-speed active electronic Autotrac with push button control (Requires 4WD models.) Cooling, external engine oil cooler Cooling, auxiliary external transmission oil cooler Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.) Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.) Trailer brake controller, integrated Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section Suspension Package Brake lining wear indicator Capless Fuel Fill (Requires (L8T) 6.6L V8 gas engine.) Exhaust, single, side --- EXTERIOR Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door Bumper, front chrome Bumper, rear chrome CornerStep, rear bumper BedStep, Black integrated on forward portion of bed on driver and passenger side Moldings, beltline, stainless steel Wheelhouse liners, rear Cargo tie downs (12), fixed rated at 500 lbs per corner Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) interior power outlet) Taillamps, LED with signature, animated Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel Mirror caps, chrome Tailgate, standard Tailgate and bed rail protection cap, top Tailgate, gate function manual with EZ Lift includes power lock and release (Upgraded to (QT6) Power up/down tailgate when (PCZ) LTZ Convenience Package is ordered. Note: When (QK2) Multi-Flex tailgate is ordered with (PCZ) LTZ Convenience Package, (QT5) EZ Lift power lock and release tailgate is retained.) Door handles, chrome --- ENTERTAINMENT Audio system feature, 6-speaker system --- INTERIOR Floor covering, color-keyed carpeting Steering wheel, wrapped Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display Exterior Temperature Display located in radio display Compass located in instrument cluster Rear Seat Reminder Window, power front, drivers express up/down USB ports, rear, dual, charge-only Power outlet, interior, 120-volt (400 watts shared with (KC9) bed mounted power outlet) Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted Chevrolet Connected Access capable (Subject to terms. See onstar.com or dealer for details.) --- SAFETY Hitch Guidance dynamic single line to aid in trailer alignment for hitching In-Vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module Following Distance Indicator Seat Belt Adjustable Guide Loops, front row only Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use, can be turned on and off in Settings menu Rear Seat Belt Indicator --- Differential:Auto-locking rear differential Audio:Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)