6.0 Liter OHV 16-Valve Vortec V8 Engine on the 2003 Chevrolet Silverado 1500 LS Crew Cab
6.0 Liter OHV 16-Valve Vortec V8 Engine on the 2003 Chevrolet Silverado 1500 LS Crew Cab 4x4
6.0 Liter OHV 16-Valve Vortec V8 Engine on the 2003 Chevrolet Silverado 1500 LT Crew Cab
6.0 Liter OHV 16-Valve Vortec V8 Engine on the 2003 Chevrolet Silverado 1500 SS Extended Cab AWD