2003 Chevy Silverado 1500 LS Z71 Extended Cab Pickup Truck for Sale. 5.3L V8 Vortech, 4WD, Automatic, ice cold A-C, power windows, power locks, power seats, AM-FM-CD Bose Stereo System, cloth interior, chrome accent package, dual chrome tipped exhaust, loaded! Sharp truck! Runs and drives strong! Looks great and sounds awesome!