1996 Oldsmobile Silhouette Owner's Manual - Page 120

Turn the display on or off by pressing the ON/OFF switch. Display the temperature in either degrees Fahrenheit (English) or Celsius (metric) by pressing the USMET switch. If the vehicle has been shut off for less than four hours, the display will show the temperature reading at the time the vehicle was turned off. Compass Variance If the vehicle has been shut off for more than four hours, an immediate reading will be displayed when the vehicle is started. The temperature display will be updated once the vehicle has reached 10 mph ( 16 km/h). If the outside temperature is 37°F (3"C) or lower when you turn on the ignition, ICE will appear briefly on the display. It's there to caution the driver that road conditions may be icy and that appropriate precautions should be taken. Compass Calibration The compass is self-calibrating, so it does not need to be manually set. However, when your Silhouette 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. Variance is the difference between magnetic north and geographic north. In some areas, the difference between the two can be great enough to cause false compass readings. If this happens, follow these instructions to set the variance for your particular location: 1. Determine your location on the zone map. Note your zone number.