GM Service Manual Online
For 1990-2009 cars only

Important: Before the navigation system can be used, a calibration of the navigation module is required.

The navigation system would require calibration under the following conditions:

    • New tyres installed
    • New navigation module installed

The navigation module calibration is carried out on vehicle and requires an 8 - 15 Km road test. For further details on the calibration procedure, refer to the Navigation System Handbook.