PACKAGE Advanced Trailering Package --- MECHANICAL Rear axle, 3.42 ratio Engine control, stop/start system disable button Engine air filtration monitor Automatic Stop/Start Hill Descent Control Transfer case, two-speed, electronic Autotrac with push button control includes transfer case shield Battery, AGM, 800 cold-cranking amps with 80 amp hour rating, 12V Alternator, 220 amp Radiator Grille Shutters, automatic Vehicle health management, provides advanced warning of vehicle issues Trailering App Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching Trailer brake controller, integrated Frame, fully-boxed GVWR, 6250 lbs. (2835 kg) Pickup box Switch, Flexride mode system Capless fuel fill --- EXTERIOR Wheel, spare, 17 x 8" (43.2 cm x 20.3 cm) steel Engine cover, appearance CornerStep, rear bumper Moldings, Black beltline Exterior, B-pillar applique (Not available on (GBA) Black and (GXN) Harvest Bronze Metallic.) Locking cylinder Tailgate, keyed cylinder lock Headlamps, LED Cargo box light, back of cab LEDS Tail lamp, Stop Mirror caps, painted (Painted Black.) Glass, solar glazing front side windows Glass, privacy glazing rear side windows Windshield, solar absorbing Door handles, body-color Tailgate, EZ-Lift and Lower StowFlex Tailgate, storage compartment, lockable --- ENTERTAINMENT Audio system feature, 6-speaker system --- INTERIOR Seat adjuster, passenger 4-way manual Console, floor front compartment with cup holders and cell phone storage Floor covering, color-keyed carpeting Steering wheel, wrapped Speedometer, miles/kilometers Driver Information Center, 11" diagonal fully-digital display Wireless Phone Charging (Not compatible with all phones or devices. Compliant devices include Qi technologies. Reference your mobile device manual to confirm what type of wireless power it uses.) USB Ports, rear, dual, charge-only Power outlet, 12-volt located in center console bin Power outlet, 120-volt, located in the rear of center console Power outlet, 120-volt, bed mounted Air vents, rear Heater, air conditioning duct, rear passenger Handles, door release, front and rear, Chrome Lighting, interior, center dome Map pocket, front passenger seatback --- SAFETY Front Pedestrian and Bicyclist Braking Hitch View Following Distance Indicator Seat Belt, Black Rear Seat Reminder Rear Seat Belt Indicator 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 --- Differential:Differential, automatic locking rear Trailering:Trailering Package, heavy-duty includes trailer hitch and 7-pin connector Audio:Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)