Vortec 5.3L V8 SFI and 4-Speed Automatic. Extended Cab! What a price for an 05! Chevrolet has done it again! They have built some great vehicles and this reliable 2005 Chevrolet Silverado 1500 is no exception! A valuable member of your workforce. New Car Test Drive called it "...a strong, rigid platform. It is, as the advertising tagline says, like a rock..."