GMPartsGiant.com offers the wholesale prices for genuine 2011 Buick Lucerne parts. Parts like Antenna/Digital Audio are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.9L Flex, 8 Cyl 4.6L. Model Code: V6 CX/CXL 4 DOOR, V8 SUPER SERIES 4 DOOR.