GMPartsGiant.com offers the wholesale prices for genuine 2010 Chevrolet Impala parts. Parts like Wiring Harness/Front Lamps are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9L Flex. Model Code: LS, LT.