Engine, Vortec 5300 V8 SFI Flex-Fuel, capable of running on unleaded or up to 85% ethanol (295 HP [219.7 kW] at 5200 rpm, 335 lb.-ft. [452.3 N-m] at 4000 rpm) (Requires 1/2 ton Models.)
Rear axle, 3.42 ratio (Requires 1/2 ton Models. Upgradeable to (GT5) Rear axle, 4.10 ratio.)
Battery, heavy-duty, 600 cold-cranking amps, includes rundown protection and retained accessory power