2004 GMC Yukon Owner's Manual - Page 121

Tow/Haul Mode When Tow/Haul mode is selected the Tow/Haul indicator light will illuminate. The Tow/Haul mode also interacts with the Autoride™ feature, if your vehicle is so equipped, to enhance the ride when trailering or with a loaded vehicle. See Autoride™ on page 4-62. Your vehicle may be equipped with a Tow/Haul mode. If so, the selector button is located on the end of the column shift lever. You can use this feature to assist when towing or hauling a heavy load. See Towing a Trailer on page 4-63 for more information. 2-27