Diagnostic Procedure

Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position

Diagnostic Procedure:

Symptom Troubleshooting Symptom Troubleshooting

Also check for:

- Navigation unit
- Internal defect in GPS antenna
- GPS antenna/cable
- Aftermarket metallic window tint
- ECM/PCM (speed and fuel pulses)
- Harness/fuses/switches