2005 Hummer H2 Owner's Manual - Page 117

{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. Follow the proper steps to be sure your vehicle will not move. See Shifting Into Park (P) on page 2-37. If you are pulling a trailer, see Towing a Trailer on page 4-68. The mirror includes a compass reading and outside temperature display in the upper right corner of the mirror. The dual display can be turned on or off by pressing either the TEMP or the COMP button. Temperature Display The temperature can be displayed by pressing the TEMP button. Press the TEMP button once briefly to toggle the temperature reading on and off. To alternate the temperature reading between Fahrenheit and Celsius, press and hold the TEMP button for approximately four seconds until the display blinks F and C. Press and release the TEMP button to toggle between the Fahrenheit and Celsius readings. After about four seconds of inactivity, the display will stop blinking and display the last selection made. If an abnormal temperature reading is displayed for an extended period of time (30 minutes), see your GM dealer. Under certain circumstances, a delay in updating the temperature is normal. Mirrors Automatic Dimming Rearview Mirror with OnStar®, Compass and Temperature Display For information on the OnStar system see OnStar System on page 2-48 or consult the OnStar® manual. The automatic dimming mirror dims to the proper level to minimize glare from lights behind you after dark. ® ® Automatic Dimming Mirror Operation Press and hold the TEMP button for about eight seconds to turn the automatic dimming feature on or off. The indicator light to the right of the TEMP button will turn on or off to show when the automatic dimming feature is activated. Once the mirror is turned off, it will remain off until it is turned back on, or until the vehicle is restarted. 2-41