1993 Oldsmobile Bravada Owner's Manual - Page 75
1993 Oldsmobile Bravada Manual
Page 75 highlights
Compass Calibration: The compass is self-calibrating, so it does not need to be manually set. However, when your Bravadais 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. Compass Variance: 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 yourparticular location: 1. Locate your location on the zone map. Note your zone number. 2. Press and hold both the ON/OFF and the US/MET switches. The display will go off. 3. After 5 seconds, VAR CAL will appear on the display. When it does, release both buttons. 4. Press US/MET until your zone number appears on the display. 5 . Press ON/OFF to enter your zone number. Your variance is now set.