Engine, Vortec 5.3L V8 SFI with Active Fuel Management (315 hp [234.9 kW] at 5200 rpm, 338 lb-ft of torque [456.3 N-m] at 4400 rpm), aluminum block (Requires TK10543 models.)
Transfer case, electronic Autotrac with rotary dial controls (Requires 4WD models.)
Rear axle, 3.73 ratio (Refer to Engine/Axle chart for availability.)
Four wheel drive
Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power