PACKAGE Z71 Appearance Package --- MECHANICAL Rear axle, 3.42 ratio (Standard on 4WD (LV3) 4.3L EcoTec3 V6 engine and (L86) 6.2L EcoTec3 V8 engine. Available with (L83) 5.3L EcoTec3 V8 engine.) GVWR, 7100 lbs. (3221 kg) (Requires 4WD models and (LV3) 4.3L EcoTec3 V6 engine.) Vehicle control, hill descent Transfer case, electronic Autotrac with rotary dial control (Included with 4WD models only.) Cooling, external engine oil cooler Air cleaner, high-capacity Battery, heavy-duty 730 cold-cranking amps/70 Amp-hr, maintenance-free with rundown protection and retained accessory power Alternator, 150 amps Underbody shield, transfer case protection (Requires 4WD models.) Frame, fully-boxed, hydroformed front section Body, Pick Up Box Exhaust, aluminized stainless-steel muffler and tailpipe --- EXTERIOR Wheel, full-size spare, 17" x 7" (43.2 cm x 17.8 cm) aluminum (Included and only available with model K15543 and (L83) 5.3L EcoTec3 V8 engine or (LV3) 4.3L EcoTec3 V6 engine.) Tire carrier lock, keyed cylinder lock that utilizes same key as ignition and door Bumper, front chrome Bumper, rear chrome Lamps, cargo area, cab mounted with switch on center switch bank Tailgate and bed rail protection cap, top Tailgate, locking utilizes same key as ignition and door Tailgate, EZ-Lift and Lower CornerStep, rear bumper Wheelhouse liners, rear Grille surround, chrome Headlamps, halogen reflector Door handles, Black --- ENTERTAINMENT 6-speaker audio system --- INTERIOR Instrumentation, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure Driver Information Center, 4.2-inch diagonal color display includes driver personalization, warning messages and vehicle information Assist handle, front passenger on A-pillar --- AutoStockImages:http://media.chromedata.com/autoBuilderData/stockPhotos/15813.jpg Fuel Economy:City: high: 16MPG low: 16MPG Hwy: high:22MPG low:22MPG Trailering:Trailering Package includes trailer hitch, 7-pin and 4-pin connectors Drivetrain:Four wheel drive Steering:Steering, Electric Power Steering (EPS) assist, rack-and-pinion Brakes:Brakes, 4-wheel disc with DURALIFE rotors, 4-wheel antilock Safety Features:Daytime Running Lamps with automatic exterior lamp control Convenience:Fog lamps, front, halogen Mirrors:Visors, driver and front passenger illuminated vanity mirrors Window:Windows, power front and rear with driver express up and down and express down on all other windows Seats:Seat, rear 60/40 folding bench (folds up), 3-passenger (includes child seat top tether anchor) Air Bag - Frontal:Airbags, Dual-stage frontal airbags for driver and front passenger, seat-mounted side-impact airbags for driver and front outboard passenger, and head-curtain side-impact airbags for front and rear outboard seating positions; includes Passenger Sensing System (Always use safety belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.) Air Bag - Side:Airbags, Dual-stage frontal airbags for driver and front passenger, seat-mounted side-impact airbags for driver and front outboard passenger, and head-curtain side-impact airbags for front and rear outboard seating positions; includes Passenger Sensing System (Always use safety belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.) Tires:Tire Pressure Monitoring System (does not apply to spare tire)