2003 Hummer H2 Owner's Manual - Page 121
2003 Hummer H2 Manual
Page 121 highlights
Overload and Overheat Protection Overload protection is designed to protect the air suspension system and is an indication to the driver that the vehicle is overloaded. If the rear suspension remains at a low height, the rear axle load has exceeded GAWR (Gross Axle Weight Rating). When the overload protection mode is activated, the compressor operates for about 30 seconds to one minute without raising the vehicle depending on the amount of overload. This will continue each time the ignition is turned on until the rear axle load is reduced below GAWR. See "GAWR" in the Index. If the system overheats, it will shut down and stop all leveling functions until the system cools down. During this time the SERVICE AIR SUSPENSION message will appear in the DIC. See "Driver Information Center" in the Index for more information. Selectable Extended Rear Ride Height (If Equipped) This feature comes as part of the electronically controlled air suspension system. The selectable rear ride height allows you to raise the rear of the vehicle approximately 2 inches (5 cm) over the normal ride height. This can be helpful when driving off-road where you may need more ground clearance to clear an obstacle. The button that controls this feature is located on the instrument panel to the right of the steering wheel. 2-39
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