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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1588 (Stationary Window System) >> Description and Operation >> Compass Calibration and Variance Procedure >> World Magnetic Variation Map

World Magnetic Variation Map

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying World Magnetic Variation Map View
G01641276Courtesy of GENERAL MOTORS CORP.
  1. Locate your current geographic location on the World Magnetic Variation Map.
  2. Turn ON the ignition, with the engine OFF.
  3. Press and hold the switch for the compass, which may be depicted as COMP, COMPASS, or On/Off (w/UE1) depending on the type of mirror on the vehicle, until a zone number appears on the compass display.
  4. Depress the switch for the compass to select the desired zone number.
  5. Wait 5 seconds, the display will return to a compass heading. The variance procedure is now complete.
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