Except for some new options and some minor tinkering, not much changed for the GMC Yukon XL in 2004. The full size SUV comes in 13 trims and seats 8-9 passengers depending on the trim. Drivers can choose among four capable V8 powertrains: a 5.3 L, 285 hp, 5.3 L, 295 hp, 6.0 L, 315 hp, and a 6.0 L, 325 hp. Expect to get around 14 mpg in the city and 18 on the highway when you drive the 2004 Yukon XL. Max towing capacity generally ranges from 8000 to 9000 lbs., with higher end trims getting up to 12000 lbs. Max cargo capacity comes out to a relatively spacious 132 cubic feet. Overall, the 2004 Yukon XL gets accolades for its roomy interior, plentiful options, and powerful V8 engines. Despite the need for better materials, automotive experts generally like the domestic SUV with the extended wheelbase. The 2004 version gives you a reasonably up-to-date model at a lower price.