GMPartsGiant.com offers the wholesale prices for genuine 2008 Chevrolet Tahoe 4WD parts. Parts like Horn are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex. Model Code: 4 DOOR 1/2 TON.