2013 Chevrolet Silverado 1500 4x4 Ext Cab Sierra 2012 2011

Rear axle, 3.42 ratio (Refer to Engine/Axle chart for availability.)

Suspension Package, Handling/Trailering, heavy-duty includes 46 mm piston monotube shocks and 36mm front stabilizer bar

GVWR, 7000 lbs. (3175 kg) (Requires CK10753 or CK10543 models.)

Transfer case, with floor-mounted shifter (Requires 4WD models.)

Four wheel drive

Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power

Alternator, 145 amps

Frame, fully-boxed, hydroformed front section

Suspension, front independent, coil over shock

Suspension, rear 2-stage multi-leaf springs, semi-elliptic

Steering, power, rack-and-pinion

Brakes, 4-wheel antilock, front disc/rear drum

Exhaust, aluminized stainless-steel muffler and tailpipe

Wheels, 4 - 17" x 7.5" (43.2 cm x 19.1 cm) 6-lug chrome-styled steel includes chrome center caps (spare wheel will not cosmetically match the other 4 wheels)

Wheel, 17" (43.2 cm) steel spare (spare wheel will not cosmetically match the other 4 wheels)

Spare tire lock keyed cylinder lock that utilizes same key as ignition and door

Tire carrier, outside spare, winch-type mounted under frame at rear

Bumper, front chrome (Includes chrome bumper bar and end caps with painted silver lower section.)

Bumper, rear chrome, step-style with pad

Air dam, Black

Moldings, bodyside, body-colored (Moldings are deleted if any SEO paint is ordered.)

Grille, chrome surround

Lamps, dual cargo area lamps

Mirrors, outside heated power-adjustable, Black, manual-folding

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 Extended Cab models, includes rear and rear quarter windows. 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

Pickup box, Fleetside

Audio system feature, speaker system (Includes 6 speakers.)

Seat adjuster, manual lumbar control on the driver-side

Seat, rear bench (folds up), full width, folding, 3-passenger (includes child seat top tether anchor) (Standard with Extended Cab models only.)

Steering column, Tilt-Wheel, adjustable with brake/transmission shift interlock

Steering wheel, includes theft-deterrent locking feature

Instrumentation, analog with speedometer, odometer, fuel level, engine temperature, and tachometer

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, 1SF 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

Cruise control, electronic with set and resume speed, located on steering wheel

Air conditioning, single-zone manual front climate control

Cup holders, front (Also includes rear cupholders on Extended and Crew Cab models. Rear cupholders are not included with (AE7) front 40/20/40 split-bench seat.)

Mirror, inside rearview manual day/night

Visors, driver and front passenger, sliding, with clip and passenger side vanity mirror with cover, Opal Gray-colored

Assist handle, front passenger (Also includes rear assist handles in the headliner on Extended and Crew Cab Models.)

Coat hooks, rear driver and passenger side

Lighting, interior with dome and reading lights, illuminated entry feature and backlit instrument panel switches

StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist

Air bags, frontal, driver and right-front passenger with 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 bags, head curtain side-impact, front outboard seating positions with rollover sensor (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 bags, seat-mounted side-impact, driver and right-front passenger for thorax and pelvic protection (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.)

Tire Pressure Monitor System (does not apply to spare tire)