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 35mm twin tube shock absorbers and 36mm front stabilizer bar|Air cleaner high-capacity|Cooling auxiliary external transmission oil cooler heavy-duty air-to-oil|Cooling external engine oil cooler heavy-duty air-to-oil integral to driver side of radiator tank|Transfer case electronic shift with rotary dial controls (Requires 4WD models.)|Four wheel drive|Battery heavy-duty 600 cold-cranking amps maintenance-free with rundown protection and retained accessory power|Alternator 125 amps|Frame fully-boxed hydroformed front section|Suspension front independent torsion bar|Suspension rear 4+1 multi-leaf springs|Steering power recirculating ball|Brakes 4-wheel antilock 4-wheel disc|Exhaust aluminized stainless-steel muffler and tailpipe|Pickup box Fleetside|Recovery hooks front Black|Tire carrier outside spare winch-type mounted under frame at rear (Orders with (ZW9) Pickup box delete will not include a Spare Tire Carrier unless a spare tire is ordered)|Spare tire lock keyed cylinder lock that utilizes same key as ignition and door (Not included when (ZW9) pickup box delete or (VF7) rear bumper delete is ordered.)|Bumper front chrome includes chrome bumper end caps|Bumper rear chrome step-style with pad (Not available with (ZW9) pickup box delete.)|Moldings bodyside body-colored (Moldings are deleted if any SEO paint is ordered.)|Grille chrome surround|Headlamps dual halogen composite with automatic exterior lamp control and flash-to-pass feature|Lamps dual cargo area lamps|Glass Solar-Ray deep-tinted (all windows except light-tinted glass on windshield and driver-and front passenger-side glass) (With Regular Cab Models includes rear window. With Crew Cab Models or (C49) rear-window defogger includes light-tinted rear window.)|Wipers front intermittent wet-arm with pulse washers|Door handles Black|Audio system feature speaker system (Includes 4 speakers on Regular Cab and 6 speakers on Crew Cab Models.)|Seat adjuster manual lumbar control on the driver-side|Seat rear 60/40 folding bench (folds up) 3-passenger folding (includes child seat top tether anchor) (Requires Crew Cab models.)|Steering column Tilt-Wheel adjustable with brake/transmission shift interlock|Steering wheel leather-wrapped with theft-deterrent locking feature|Instrumentation analog with speedometer fuel level engine temperature tachometer voltmeter and oil pressure indicators|Driver Information Center with odometer trip odometer and message center (monitors numerous systems depending on vehicle equipment level including low fuel turn signal on” transmission temperature and oil change notification) (Driver Information Center controls are operated through the trip odometer button unless (UK3) steering wheel mounted audio controls is ordered. On 1LT and 1LZ includes 8-point compass and outside temperature.)|Warning tones headlamp on key-in-ignition driver and passenger buckle up reminder and turn signal on|Windows power with driver Express-Down|Cruise control electronic with set and resume speed located on steering wheel|Cup holders front (Also includes rear cupholders on Crew Cab models)|Mirror inside rearview manual day/night|Visors driver and front passenger sliding with clip and illuminated vanity mirror on driver and passenger-side Opal Gray-colored|Assist handle front passenger (Also includes rear assist handles in the headliner on Crew Cab models)|Lighting interior with dome and reading lights illuminated entry feature and backlit instrument panel switches|Coat hooks rear driver and passenger side|StabiliTrak stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist|Daytime Running Lamps with automatic exterior lamp control|Air bags frontal driver and right-front passenger (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.)|Door locks rear child security (Crew Cab models only.)|Tire Pressure Monitor System (does not apply to spare tire)”