Alternator, 145 amps Battery, heavy-duty 600 cold-cranking amps maintenance-free with rundown protection and retained accessory power Brakes, 4-wheel antilock, front disc/rear drum 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 Differential, heavy-duty automatic locking rear 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

Strongsville, Ohio, United States