2005 Chevrolet Tahoe Owner's Manual - Page 120

All-Wheel Drive with StabiliTrak® With this feature, engine power is sent to all four wheels all the time. AWD is like four-wheel drive, but there is no separate lever or switch to engage or disengage the front axle. It is fully automatic, and when combined with StabiliTrak®, the AWD system adjust itself as needed for road conditions. The transfer case buttons are located to the left of the instrument panel cluster. Use these buttons to shift between the various modes of four-wheel drive. The three modes you can choose between are: This button is used to enable or disable the StabiliTrak® on and off and is also used to shift the transfer case into Neutral (N). For more information on using StabiliTrak®, see StabiliTrak® System on page 4-11. d (StabiliTrak®): f (All-Wheel Drive): g (4LO): This button allows the transfer case to distribute power to all four wheels as needed depending on road and driving conditions. This button allows the transfer case to delivers extra torque to the wheels, and provides for precise control of wheel speed by engine braking. You may never need this setting. It sends maximum power to all four wheels. You might choose 4LO if you are driving off-road in deep sand, deep mud, deep snow and climbing or descending steep hills. 2-32