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] at 5200 rpm, 335 lb-ft of torque [452.2 N-m] at 4000 rpm, aluminum block (Requires TK10543 or TK10753 models.)
Rear axle, 3.08 ratio (Refer to Engine/Axle chart for availability.)
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.)
GVWR, 7000 lbs. (3175 kg) (Requires TC10753 models and (NHT) Max Trailering Pack or TK10753, TK10953 or TK10543 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