MECHANICAL Rear axle, 3.42 ratio (Included and only available with (L3B) 2.7L Turbo engine or (NHT) Max Trailering Package.) Pickup bed GVWR, 7000 lbs. (3175 kg) (Requires Crew Cab or Double Cab 4WD model and (L3B) 2.7L Turbo engine. Requires Crew Cab 2WD model and (LM2) Duramax 3.0L Turbo-Diesel I6 engine. Requires Double Cab 4WD model with (L84) 5.3L EcoTec3 V8 engine without (NHT) Max Trailering Package.) Automatic Stop/Start Transfer case, single speed, electronic Autotrac with push button control (4WD models only) Alternator, 220 amps (Included and only available with (L3B) 2.7L Turbo engine, (LM2) Duramax 3.0L Turbo-Diesel I6 engine, (VYU) Snow Plow Prep Package or (NHT) Max Trailering Package.) Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L84) 5.3L EcoTec3 V8 engine, (L3B) 2.7L Turbo engine and (L87) 6.2L EcoTec3 V8 engine.) Frame, fully-boxed, hydroformed front section Cargo tie downs (12), fixed, rated at 500 lbs per corner Capless Fuel Fill Exhaust, single outlet Exhaust, aluminized stainless-steel muffler and tailpipe --- EXTERIOR Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door Bumper, front chrome lower Bumper, rear chrome with bumper CornerSteps CornerStep, rear bumper Moldings, window surround, Chrome Grille (Chrome surround with high gloss Black mesh and Chrome inserts.) Taillamps, LED tail and stop light with incandescent reverse light Mirror caps, chrome (Requires (DLF) outside heated power adjustable mirrors.) Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel. Tailgate, standard Tailgate, gate function manual with lift assist Tailgate and bed rail protection caps, top Tailgate, locking utilizes same key as ignition and door Door handles, body-color --- ENTERTAINMENT Audio system feature, 6-speaker system --- INTERIOR Seat adjuster, driver 4-way manual Seat adjuster, passenger 4-way manual Floor covering, color-keyed carpeting Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure Driver Information Center, 4.2" diagonal color display includes driver personalization Compass, located in instrument cluster Exterior Temperature Display, located in radio display Brake lining wear indicator Air vents, rear Mirror, inside rearview, manual tilt Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.) --- SAFETY Rear Seat Reminder --- AutoStockImages:http://media.chromedata.com/autoBuilderData/stockPhotos/28567.jpg,http://media.chromedata.com/autoBuilderData/stockPhotos/28567.jpg Fuel Economy:City: high: 16MPG low: 16MPG Hwy: high:22MPG low:22MPG Drivetrain:Four wheel drive Steering:Steering, Electric Power Steering (EPS) assist, rack-and-pinion Brakes:Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors Window:Glass, deep-tinted Convenience:Steering wheel, leather-wrapped Audio:4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.) Safety Features:StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist Air Bag - Frontal:Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in