MECHANICAL Rear axle, 4.10 ratio (Requires (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous CNG (Compressed Natural Gas) engine.) Suspension Package, Handling/Trailering, heavy-duty includes 51mm twin tube shock absorbers and 33mm front stabilizer bar Pickup box GVWR, 9300 lbs. (4218 kg) (Requires Regular Cab model, (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous engine and 2WD.) Air cleaner, high-capacity 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 Alternator, 150 amps Frame, fully-boxed, hydroformed front section Cargo tie downs (4), movable upper (Requires (E63) pickup box.) (Not available with (ZW9) pickup box delete.) Exhaust, aluminized stainless-steel muffler and tailpipe --- EXTERIOR Wheels, 17" x 7.5" (43.2 cm x 19.1 cm) full-size, steel spare Spare not included with (ZW9) pickup box delete unless a spare tire is ordered. (Requires 17" wheels and tires.) Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door (Not included when (ZW9) pickup box delete or (9J4) rear bumper delete is ordered.) Bumper, front chrome CornerStep, rear bumper (Requires (E63) pickup box.) Bumper, rear chrome with bumper CornerSteps (Requires (E63) pickup box.) Grille surround, chrome Lamps, cargo area, cab mounted with switch on center switch bank Mirrors, outside manual, Black Glass, solar absorbing, tinted Door handles, Black Tailgate and bed rail protection caps, top Tailgate, locking, utilizes same key as ignition and door (Not available with (AQQ) Remote Keyless Entry.) --- ENTERTAINMENT XM Satellite Radio, delete Audio system feature, 4-speaker system on Regular Cab models --- INTERIOR Steering wheel, base Floor covering, Graphite-colored rubberized-vinyl Instrumentation, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure Driver Information Center, 3.5-inch diagonal monochromatic display provides warning messages and basic vehicle information Assist handle, front passenger and driver on A-pillars OnStar, delete --- AutoStockImages:http://media.chromedata.com/autoBuilderData/stockPhotos/18220.jpg Differential:Differential, heavy-duty locking rear Drivetrain:Rear wheel drive Steering:Steering, Recirculating Ball with smart flow power steering system Brakes:Brakes, 4-wheel antilock, 4-wheel disc with DuraLife brake rotors Convenience:Cruise control, steering wheel-mounted Air Conditioning:Air conditioning, single-zone Safety Features:Daytime Running Lamps with automatic exterior lamp control Air Bag - Frontal:Air bag deactivation switch, frontal passenger-side (Included and only available with (ZW9) Pickup box delete on Double Cab and Regular Cab models only. Note: Crew cab does not receive the air bag deactivation switch when ZW9 package is ordered.) Air Bag - Side:Air bags Double Cab and Regular Cab: Frontal Airbags- Driver single stage and Front Passenger dual-stage; Thorax side-impact, seat mounted, both driver and front passenger; Head curtain front and rear outboard seating positions; Passenger Sensing System - Infant only suppression for passenger and passenger seat belt reminder status displayed on overhead console (With (ZW9) pickup box delete on Double and Regular Cab you will get single-stage frontal and thorax side-impact, driver and front passenger, and head curtain side-impact, front and rear outboard seating positions. 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)