GMPartsGiant.com offers the wholesale prices for genuine 2009 GMC Yukon XL 1500 Denali 2WD parts. Parts like Engine Assembly-Manifolds & Fuel Related Parts are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 6.2L Flex. Model Code: 1/2 TON.