2011 GMC SIERRA 1500 SLT 4X4 K1500 4WD 6.2L

Suspension Package, Handling/Trailering, heavy-duty includes 46 mm piston monotube shocks and 36mm front stabilizer bar (Includes 36mm front stabilizer bar when (NHT) Max Trailering Pack is ordered.)
Suspension, front independent, coil over shock
Brakes, 4-wheel antilock, front disc/rear drum
Transmission, 6-speed automatic
Transfer case, electronic Autotrac with rotary dial controls (Requires 4WD models.)
Battery, heavy-duty 600 cold-cranking amps maintenance-free with rundown protection and retained accessory power
Alternator, 145 amps
Engine, Vortec 5.3L Variable Valve Timing V8 SFI FlexFuel with Active Fuel Management capable of running on unleaded or up to 85% ethanol (with gas - 315 hp [234.8 kW] @ 5200 rpm, 335 lb-ft of torque [452.2 N-m] @ 4000 rpm, with E85 ethanol - 326 hp [243.1 kW] @ 5300 rpm, 348 lb-ft of torque [469.8 N-m] @ 4400 rpm), aluminum block (Requires TK10543 or TK10753 models.)
Pickup box, Wideside
Suspension, rear 2-stage multi-leaf springs, semi-elliptic
Tools, mechanical jack and wheel wrench located in back of cab
Steering, power, rack-and-pinion
Differential, heavy-duty automatic locking rear
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
PACKAGE
Trailering Package, heavy-duty includes trailering hitch platform and 2-inch receiver, 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 (KNP) external transmission oil cooler
SAFETY
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control
Tire Pressure Monitor System (does not apply to spare tire)
Automatic Crash Response
Stolen Vehicle Assistance
Air bags, head curtain side-impact, front and rear outboard seating positions with rollover sensor (Head curtain side air bags are designed to help reduce the risk of head and neck injuries to front and rear seat outboard occupants on the near side of certain side-impact collisions. 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 in the appropriate infant, child or booster seat. See the Owner's Manual and child safety seat instructions for more safety information.)
OnStar Turn-by-Turn Navigation
Air bags, seat-mounted side-impact, driver and right-front passenger for thorax and pelvic protection (Head curtain side air bags are designed to help reduce the risk of head and neck injuries to front and rear seat outboard occupants on the near side of certain side-impact collisions. 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 in the appropriate infant, child or booster seat. See the Owner's Manual and child safety seat instructions for more safety information.)
OnStar, 6 months of Directions and Connections plan includes Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance including Stolen Vehicle Slowdown and Remote Ignition Block, Remote Door Unlock (requires power locks), Turn-by-Turn Navigation with Destination Download (requires navigation radio) and OnStar eNav (where available), OnStar Vehicle Diagnostics, Roadside Assistance, Remote Horn and Lights, and Hands Free Calling. (Visit onstar.com for details and system limitations.)
Daytime Running Lamps with automatic exterior lamp control
Door locks, rear child security. (Crew Cab models only.)
Air bags, frontal, driver and right-front passenger with Passenger Sensing System (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.)