GMPartsGiant.com offers the wholesale prices for genuine 2005 GMC Yukon XL 2500 2WD parts. Parts like Accelerator Control 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, 8 Cyl 6.0L, 8 Cyl 8.1L. Model Code: 3/4 TON.