S10/T10 Blazer 2WD V6-4.3L VIN X (2003)
Compass: Service and Repair
Electronic Compass Calibration
ELECTRONIC COMPASS CALIBRATION
COMPASS CALIBRATION
1. Turn ON the ignition.
IMPORTANT: Before calibrating the compass, drive the vehicle to a area that is magnetically clean, and free of large metallic objects.
2. Press the MODE button in order to advance to the COMP/TEMP mode.
3. Simultaneously depress and hold the US/MET and MODE buttons until a C is displayed, in approximately 10 seconds.
4. Release both buttons.
5. Drive the vehicle in circles at a speed of less than 8 km/h (5 mph) until the C is replaced by a proper vehicle heading. The calibration procedure is
now complete.
COMPASS MAGNETIC VARIATION ADJUSTMENT
1. Locate your geographic location.
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.
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.
