2002 GMC Sonoma Owner's Manual - Page 128

Temperature and Compass Display Turn the display on or off by pressing the ON/OFF button. Display the temperature in either degrees Fahrenheit (English) or Celsius (metric) by pressing the US/MET button. Before you turn on the ignition and move the vehicle, the temperature indicated will be the last outside temperature recorded with the ignition on. If the outside temperature is 37_F (3_C) or lower when you turn on the ignition, the word ICE will appear on the display. This is a warning to the driver that road conditions may be icy, and that appropriate precautions should be taken. The compass is self-calibrating, so it does not need to be manually set. However, when your vehicle is new, the compass may function erratically. If it does, CAL (Calibration) will appear on the display. To correct the problem, drive in a complete 360_ circle three times, and the compass will function normally. The outside air temperature and the compass are displayed at the front of the overhead console. The control buttons are located to the left of the display. 2-58