2004 Hummer H2 Owner's Manual - Page 114

{CAUTION: It can be dangerous to get out of your vehicle if the shift lever is not fully in PARK (P) with the parking brake firmly set. Your vehicle can roll. Do not leave your vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure your vehicle will not move, even when you are on fairly level ground, always set your parking brake and move the shift lever to PARK (P). Follow the proper steps to be sure your vehicle will not move. See Shifting Into Park (P) on page 2-30. If you are pulling a trailer, see Towing a Trailer on page 4-75. Mirrors Automatic Dimming Rearview Mirror with Compass and Temperature Display The automatic dimming mirror will automatically dim to the proper level to minimize glare from lights behind you after dark. The mirror also includes a display in the upper right corner of the mirror. The compass reading and the outside temperature will both appear in the display at the same time. The dual display can be turned on or off by briefly pressing either the TEMP or the COMP button. {CAUTION: All-wheel drive vehicles with the transfer case in NEUTRAL will allow the vehicle to roll, even if your shift lever is in PARK (P). So, be sure the transfer case is in a drive gear - not in NEUTRAL. Always set your parking brake. 2-34