Data Not Current or Inaccurate - Global Positioning System (GPS)
GLOBAL POSITIONING SYSTEM (GPS) DATA NOT CURRENT OR INACCURATEDIAGNOSTIC AIDS
- The GPS Signal title on the scan tool will display a "Yes" or "No" dependant upon whether or not the module sees an increment of the seconds transmitted by GPS signals to the Vehicle Communication Interface Module. Upon entering this screen, the "GPS Signal" title will automatically display "Yes", regardless of the presence of time increment, for at least two seconds, while the algorithm in the scan tool determines the status of the clock. If increment is found, "Yes" is continually displayed. If the clock remains static, "No" is displayed. The scan tool looks for increment every second, regardless of current display.
- Inaccurate or aged GPS position concerns made by a customer which are no longer present may have been due to the temporary loss of GPS signal reception by the vehicle. Conditions such as driving through tunnels or parking structures while making an OnStar(R) keypress will restrict the navigation antenna from a clear view of the satellites in the sky and may have caused this temporary data loss.
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