Flex Fuel! SUV buying made easy! If you demand the best this superb 2004 GMC Yukon XL is the SUV for you. You never know when life is going to throw you a curve but the antilock braking system will always be there to help stop trouble right in its tracks. J.D. Power and Associates gave the 2004 Yukon XL 4 out of 5 Power Circles for Overall Initial Quality Mechanical.*** Tell us that you saw this vehicle on the Dealix Used Cars Network ***.