2012 GMC Sierra 3500HD 4WD Crew Cab 167.7" SLT

Rear axle, 3.73 ratio

Suspension Package, Handling/Trailering, heavy-duty includes 35mm monotube shocks and 34mm front stabilizer bar

Air cleaner, high-capacity

Transfer case, electronic shift with rotary dial controls (Requires 4WD models)

Differential, heavy-duty automatic locking rear

Four wheel drive

Trailering equipment, heavy-duty includes trailering hitch platform and 2.5- inch receiver with 2" adapter, 7-wire harness (harness includes wires for: park lamps, backup lamps, right turn, left turn, electric brake lead, battery and ground) with independent fused trailering circuits mated to a 7-way sealed connector, wiring harness for after-market trailer brake controller (located in the instrument panel harness) and (JL1) integrated trailer brake controller (Will be deleted if (ZW9) pickup box delete is ordered.)

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

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

Alternator, 125 amps

Trailer brake controller, integrated

Recovery hooks, front, frame-mounted

Frame, fully-boxed, hydroformed front section

Suspension, front independent, torsion bar

Suspension, rear 4+1+2 multi-leaf springs for single rear wheel and 3+1+2 multi-leaf springs for dual rear wheel

Steering, power, recirculating ball

Exhaust, aluminized stainless-steel muffler and tailpipe

Pickup box, Wideside

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 body-color bumper top caps

Bumper, rear chrome, step-style with pad (Not available with (ZW9) pickup box delete)

Moldings, bodyside, body-colored

Grille, chrome surround (Interim change from (V22) chrome surround grille effective October 2011.)

Headlamps, dual halogen composite with automatic exterior lamp control and flash-to-pass feature

Fog lamps, front, halogen

Lamps, dual cargo area lamps

Mirrors, outside heated power-adjustable vertical camper manual-folding and extension, Black integrated turn signal indicators consisting of 50 square inch flat mirror surface positioned over a 20 square inch convex mirror surface with a common head and lower convex spotter glass (convex glass is not heated or power adjustable)

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. Included with (PCM) Work Truck Preferred Package.)

Wipers, front intermittent wet-arm with pulse washers

Tailgate protection top of tailgate protection cap

SiriusXM Satellite Radio is standard on nearly all 2012 GM models. Enjoy a 3-month trial to the 'XM Select' package, with over 170 channels including commercial-free music, all your favorite sports, exclusive talk and entertainment. And now add premium channels to your trial at no-cost. Welcome to the world of satellite radio. (Not available with (UYS) AM/FM stereo with MP3 compatible CD/DVD player and navigation or (UE0) OnStar, delete. Requires a subscription sold separately by SiriusXM after the trial period. If you decide to continue your service at the end of your subscription, service will automatically renew and bill, at the rates in effect at the time of renewal, until you call SiriusXM at 1-866-635-2349 to cancel. See our Customer Agreement for complete terms at www.siriusxm.com. Available only to those at least 18 and older in the 48 contiguous USA and D.C.)

Audio system feature, Bose premium speaker system with sub-woofer in center console

Bluetooth for phone personal cell phone connectivity to vehicle audio system

Seat, rear 60/40 folding bench (folds up), 3-passenger, folding (includes child seat top tether anchor)

Steering wheel, leather-wrapped with theft-deterrent locking feature

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

Steering wheel controls, mounted audio controls

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 button unless (UK3) steering wheel mounted audio controls is ordered. On 3SA and 4SA, 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 (Includes front passenger Express-down.)

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

Air conditioning, dual-zone automatic climate control with individual climate settings for driver and right-front passenger

Defogger, rear-window electric (Not available with (A48) power sliding rear window.)

Cup holders, front (Also includes rear cupholders on Extended and Crew Cab models)

Headliner, Opal Gray-colored cloth with matching retainer moldings

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 Extended and 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

Daytime Running Lamps with automatic exterior lamp control

Air bags, frontal, driver and right-front passenger (Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat. See the Owner's Manual and child safety seat instructions for more safety information.)

Door locks, rear child security (Crew Cab models only.)