Diagnostic Procedure
Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position
Symptom Troubleshooting Symptom Troubleshooting
Also check for
Audio-Navigation unit
Also check for
Internal defect in GPS antenna
Also check for
GPS antenna/cable
Also check for
Aftermarket metallic window tint
Also check for
PCM (speed and fuel pulses)
Also check for
Harness/fuses/switches