2005 Hummer H2 Owner's Manual - Page 298
2005 Hummer H2 Manual
Page 298 highlights
To use this feature, ensure that the following conditions are met: • The engine must be running. • All doors must be fully closed. The suspension will not raise or lower if a door is open. You may also want to use this feature when ascending, descending or cresting a steep hill as this can help prevent the rear bumper from dragging on the base of the hill or prevent the vehicle from grounding out (high centering) on the crest of the hill. Do not use this feature when towing a trailer. • The vehicle speed must be less than 40 mph (64 km/h). The system will not activate otherwise. Press the height control button to raise the rear of the vehicle. A light in the button will begin to flash as the rear of the vehicle rises. Once the extended height has been reached (this may take up to a minute), the warning light will stop flashing and will stay lit while the vehicle is at the extended height. To lower the vehicle to the normal ride height, press the button again. The light in the button will flash as the suspension lowers. When the light in the button stops flashing and goes out, the suspension has reached the normal ride height. This feature will lower the vehicle to the normal height if vehicle speed exceeds 40 mph (64 km/h). Electronically Controlled Air Suspension System The electronically controlled air suspension, if equipped, keeps the rear of your vehicle level as you load and unload it. The system includes a compressor, two height sensor and two air springs supporting the vehicle. The engine must be running for the system to level the vehicle after loading or unloading. The system will suspend leveling if any of the doors are open. Once the doors are closed, system leveling will continue. You may hear the compressor running when you load your vehicle, and periodically as the system adjusts the vehicle to the standard ride height. You may also hear the release of air similar to a hissing sound during suspension operation. This is normal. Load leveling will not function normally with the inflator hose attached to the inflator outlet. Remove the inflater hose from the outlet when it is not in use. See Accessory Inflator on page 5-67. 4-66