Engine:ENGINE, VORTEC 5.3L VARIABLE VALVE TIMING V8 SFI FLEXFUEL WITH ACTIVE FUEL MANAGEMENT
Transmission:Transmission, 4-speed automatic, electronically controlled with overdrive and tow/haul mode (On Crew Cab models, requires (L20) Vortec 4.8L V8 SFI Flex-Fuel engine. Not available on C*10953 models.)