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Home >> Chevrolet >> 2010 >> Cobalt LS, 4D Sedan, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Navigation System) >> Symptom Troubleshooting >> GPS icon is white or not shown >> Diagnostic Test: Self-Diagnosis Mode

Diagnostic Test: Self-Diagnosis Mode

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
  • With good reception, the icon is normally green.
  • Make sure the GPS antenna is plugged in.
  • Check for any aftermarket accessories or metallic window tinting that may be interfering with the GPS signal.
  • Make sure the vehicle is parked outside, away from buildings.
  • Refer to GPS Information (see COVERAGE AREA  ) for realtime satellite reception display.
  1. Check for aftermarket metallic window tint on the rear window and electronic aftermarket accessories (possibly hidden) mounted near the GPS antenna or the audio-navigation unit.

    Is there aftermarket metallic window tint or electronic accessories? 

    YES  -Remove tint or the accessories, and recheck.

    NO  -Go to step 2.

  2. Turn the ignition switch to ON (II).
  3. Go into the Self-Diagnosis Mode, and use the System Links diagnostic (see SYSTEM DIAGNOSTIC MODE  ) to check the GPS antenna.

    Is the GPS Ant icon red? 

    YES  -Check for a kinked, crushed, or disconnected GPS antenna wire. If the icon is still red, replace the GPS antenna (see GPS ANTENNA REMOVAL/INSTALLATION  ).

    NO  -Check that nothing is blocking the GPS antenna located under the package shelf, and recheck. Substitute a known-good GPS antenna (see GPS ANTENNA REMOVAL/INSTALLATION  ), and recheck.

    • If the symptom is gone, replace the GPS antenna.
    • If the symptom is still present, substitute a known-good audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION  ), and recheck. If the symptom is gone, replace the original audio-navigation unit.