Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 486 (INSTRUMENT PANEL, GAGES, AND CONSOLE)REPAIR INSTRUCTIONSELECTRONIC COMPASS CALIBRATIONCOMPASS MAGNETIC VARIATION ADJUSTMENT
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Compass Magnetic Variation Adjustment
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Compass Magnetic Variation Adjustment
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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.
- Locate your geographic location. Refer to the variation zone map.
- Turn ON the ignition, with the engine OFF.
- Press the MODE button in order to advance to the COMP/TEMP mode.
- 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.
- Release both buttons.
- Press the US/MET button in order to advance to the proper zone number.
- Press the MODE button in order to enter and set the zone number.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.