StabiliTrak, stability control system includes electronic trailer sway control, intelligent brake assist 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 the correct child restraints for your child's age and size. Even in vehicles equipped with air bags and the Passenger Sensing System, children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. Never place a rear-facing infant restraint in the front seat of any vehicle equipped with an active frontal air bag. See the Owner's Manual and child safety seat instructions for more safety information.)

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

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

MECHANICAL (19)

• Rear axle, 3.73 ratio
• Suspension Package, Handling/Trailering, heavy-duty includes 35mm twin tube shock absorbers and 36 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)
• Differential, heavy-duty automatic locking rear
• Four wheel drive
• Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power
• Alternator, 125 amps
• Frame, hydroformed front section
• Recovery hooks, front, frame-mounted
• 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.)
• Trailer brake controller, integrated
• Suspension, front independent, torsion bar with increased front GAWR
• 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

EXTERIOR (13)

• Pickup box, Fleetside
• 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 available with (ZW9) pickup box delete or (VF7) rear bumper delete.)
• 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
• Fog lamps, front, halogen
• 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, color-keyed

ENTERTAINMENT (3)

• XM Radio is standard on nearly all 2011 GM models and includes 3 months of trial service. Get over 170 channels, including: commercial-free music, sports, news, talk, entertainment, comedy, family and kids' channels, and much more. With XM's incredible range of programming, everything worth listening to is on XM (Not available with (UUL) AM/FM stereo with MP3 compatible CD player and navigation, (UUK) AM/FM stereo with MP3 compatible CD/DVD player and navigation or (UE0) OnStar, delete. Requires a subscription sold separately by XM after the first 90 days. Available only in the 48 contiguous United States and District of Columbia. Visit gm.xmradio.com for details.)
• Audio system feature, Bose premium speaker system with sub-woofer in center console
• Bluetooth for phone personal cell phone connectivity to vehicle audio system

INTERIOR (16)

• Seat, rear 60/40 folding bench (folds up), 3-passenger, folding (includes child seat top tether anchor)
• Steering column, Tilt-Wheel, adjustable with brake/transmission shift interlock
• Steering wheel, leather-wrapped with theft-deterrent locking feature
• 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 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 (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)
• 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