GMC introduced the all-new Yukon XL in 2000. This full-size SUV resembles the Chevrolet Suburban and comes in 8 trims. The Yukon XL has two V8 engines: a 5.3 L version and a more powerful 6.0 L. Horsepower averages out to 300 hp, give or take 15 hp depending on the trim. Gas mileage generally comes out to 14 mpg in the city and 18 on the highway. This extended wheelbase version of the Yukon has 4 doors and seats 8-9 passengers. Most trims weigh anywhere from 7000 to 9000 lbs. Overall, the 2000 GMC Yukon XL delivers the full range of goods in its debut. Drivers especially like the roomy interior, smooth handling, and powerful V8 engines. While styling and materials could use an upgrade, the 2000 GMC Yukon XL provides drivers with a capable pickup truck that won't break the bank.