2008 Hummer H2 Owner's Manual - Page 118

Tow/Haul Mode Your vehicle is equipped with a tow/haul mode. The button is located on the instrument panel to the right of the steering wheel. Transfer Case Dial The transfer case dial is located to the right of the instrument panel cluster. Use this switch to shift into and out of the different Full-Time Four-Wheel Drive modes. You can use this feature to assist when towing or hauling a heavy load. See "Tow/Haul Mode" under Towing a Trailer on page 4-55 for more information. Full-Time Four-Wheel Drive The transfer case on your Full-Time Four-Wheel Drive vehicle is designed to constantly send the engine's driving power to all four wheels for extra traction. To get the most out of Full-Time Four-Wheel Drive, you must be familiar with its operation. Notice: Driving on pavement in Four-Wheel High Lock or Four Wheel Low Lock for extended periods may cause premature wear on your vehicle's powertrain and tires. Do not drive in Four-Wheel High Lock or Four-Wheel Low Lock on pavement for extended periods. The transfer case is a part of the Full-Time Four-Wheel Drive system and allows the following four different modes of operation: (Full-Time Four-Wheel Drive): This setting is used 4m for driving in most street and highway situations. It can be used for light or variable off-road conditions. Q 4 m (Four-Wheel-High Lock): Use this mode when you need extra traction in most off-road situations such as sand, mud, snow, or level, rocky trails. Q 4 n (Four-Wheel-Low Lock): This mode delivers extra torque to all four wheels and is used for extreme off-road conditions. Choose Four-Wheel-Low Lock while driving off-road in deep sand, mud, or snow and climbing or descending steep hills. 2-36