Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power
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.)
Cooling, auxiliary external transmission oil cooler, heavy-duty air-to-oil
Brakes, 4-wheel antilock, front disc/rear drum
Rear axle, 3.08 ratio (Refer to Engine/Axle chart for availability.)
Four wheel drive
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.)
Heavy Duty Cooling Package, heavy-duty includes (KC4) external engine oil cooler, (KNP) auxiliary external transmission oil cooler, electric fan and heavy-duty radiator
Exhaust, aluminized stainless-steel muffler and tailpipe
Steering, power, rack-and-pinion
Differential, heavy-duty automatic locking rear
Suspension, front independent, coil over shock
Transfer case, electronic Autotrac with rotary dial controls (Requires 4WD models.)
Alternator, 145 amps
Frame, fully-boxed, hydroformed front section
SAFETY
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.)
Automatic Crash Response
OnStar Turn-by-Turn Navigation
Tire Pressure Monitor System (does not apply to spare tire)
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
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
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
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.)