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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1258 (Instrument Panel, Gauges & Console) >> Repair Instructions >> Electronic Compass Calibration >> Compass Magnetic Variation Adjustment

Compass Magnetic Variation Adjustment

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Magnetic variation adjustments are required when the compass displays a constant error in heading. Variation is the difference between magnetic north and true north due to geographical location.
  1. Locate your geographic location. Refer to the variation zone map.
  2. Turn ON the ignition, with the engine OFF.
  3. Press the MODE button in order to advance to the COMP/TEMP mode.
  4. With the DIC in the COMP/TEMP mode, simultaneously depress and hold the MODE and US/MET buttons until VAR CAL is displayed, in approximately 5 seconds.
  5. Release both buttons.
  6. Press the US/MET button in order to advance to the proper zone number.
  7. Press the MODE button in order to enter and set the zone number.
    8. Fig 1: Compass Magnetic Variation Zone Map
    G02506268Courtesy of GENERAL MOTORS CORP.
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