( http://www.TFLcar.com ) The 2015 GMC Yukon Denali (and Yukon XL) is a luxurious people hauler that shares a platform with the Chevy Tahoe and Suburban as well as the underpinning of the new GMC Sierra. This week in California GMC debuted the all new 2015 GMC Yukon Denali. The big family truckster features a more refined style, more creature comforts and more safety features according to GMC. Our cameras were on hand when GMC unveiled the 2015 GMC Yukon Denali. In another fun and informative TFLcar debut video, here's everything that you ever wanted to know about the 2015 GMC Yukon Denali.