Four wheel drive
Suspension, front independent, coil over shock
Cooling, auxiliary external transmission oil cooler, heavy-duty air-to-oil
Rear axle, 3.08 ratio (Refer to Engine/Axle chart for availability.)
Heavy Duty Cooling Package, heavy-duty includes (KC4) external engine oil cooler, (KNP) auxiliary external transmission oil cooler, electric fan and heavy-duty radiator
Suspension, rear 2-stage multi-leaf springs, semi-elliptic
Differential, heavy-duty automatic locking rear
Cooling, external engine oil cooler heavy-duty air-to-oil, integral to driver side of radiator tank
Brakes, 4-wheel antilock, front disc/rear drum
Transmission, 6-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking
Steering, power, rack-and-pinion
Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power
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), aluminum block (Requires CK10543 or CK10753 models.)
SAFETY
OnStar, 6 months of Directions and Connections plan includes Automatic Crash Response, Emergency Services, Crisis Assist, First Assist, Injury Severity Predictor, Stolen Vehicle Assistance, Stolen Vehicle Slowdown, Remote Ignition Block, Remote Door Unlock (requires power locks), Roadside Assistance, Remote Horn and Lights, Turn-by-Turn Navigation with OnStar eNav, Destination Download (requires navigation radio), OnStar Vehicle Diagnostics, Hands Free Calling and available OnStar RemoteLink mobile app. (Visit onstar.com for details and system limitations.)
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.)
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.)
Stolen Vehicle Assistance
Automatic Crash Response
Daytime Running Lamps, with automatic exterior lamp control
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, 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.)
Door locks, rear child security (Crew Cab models only.)
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.)
Air bags, head curtain side-impact, front 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.)
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
OnStar Turn-by-Turn Navigation
Tire Pressure Monitor System (does not apply to spare tire)