2006 GMC Yukon Owner's Manual - Page 122

When Tow/Haul mode is selected the Tow/Haul indicator light will illuminate. The transfer case buttons are located to the left of the instrument panel cluster. The Tow/Haul mode also interacts with the Autoride® feature, if equipped, to enhance the ride when trailering or with a loaded vehicle. See Autoride® on page 4-60. Four-Wheel Drive If your vehicle has four-wheel drive, you will see the buttons shown below. You can send your engine's driving power to all four wheels for extra traction. To get the most satisfaction out of four-wheel drive, you must be familiar with its operation. Read the part that follows before using four-wheel drive. Notice: Driving on clean, dry pavement in Four-Wheel-Drive High or Four-Wheel-Drive Low for an extended period of time may cause premature wear on your vehicle's powertrain. Do not drive on clean, dry pavement in Four-Wheel Drive High or Four-Wheel-Drive Low for extended periods of time. The front axle locks and unlocks automatically when you shift the transfer case. Some delay for the axle to lock or unlock is normal. For information on StabiliTrak®, see StabiliTrak® System on page 4-9. Use these buttons to shift into and out of four-wheel drive. 2-26