Symptom Troubleshooting Index
SYMPTOM TROUBLESHOOTING INDEX
| Symptom | Diagnostic Procedure | Also check for |
|---|---|---|
| OnStar buttons respond normally when pressed, but the OnStar LED indicator is solid or flashing red |
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| OnStar buttons do not respond when pressed and OnStar LED indicator is solid or flashing red or is solid green | Troubleshooting (see ONSTAR BUTTONS DO NOT RESPOND WHEN PRESSED AND ONSTAR LED INDICATOR IS SOLID OR FLASHING RED OR IS SOLID GREEN ) | |
| No voice response when CALL ANSWER/CALL END button is pressed (system responds with only beep tones) | The voice feedback feature is turned OFF. See the owner's manual procedure to turn voice feedback back ON. | |
| OnStar system states it is dialing out after OnStar Services button is pressed, but only a beeping or carrier error message is heard | Troubleshooting (see ONSTAR SYSTEM STATES IT IS DIALING OUT AFTER ONSTAR SERVICES BUTTON IS PRESSED, BUT ONLY A BEEPING OR CARRIER ERROR MESSAGE IS HEARD ) | Poor cellular coverage. Move vehicle to a different location |
| OnStar reports the MIN, STID and/or ESN is no good or corrupted | OnStar reports that the MIN, STID and/or the ESN of the OnStar control unit are reported as no good or corrupted. Replace the OnStar control unit | |
| OnStar LED blinks green, red, green continually | The OnStar unit is in the "Shipping Mode" to put the unit into the "Market Mode" (see TRANSITIONING THE ONSTAR CONTROL UNIT TO MARKET MODE ) | |
| OnStar telephone repeatedly loses pre-paid phone units (minutes) | Verify account usage with the OnStar call center. If usage does not match actual units used over time, replace the OnStar unit | Check the battery condition and charging system performance |
| OnStar Activation Failure message during activation | Software download and/or activation failed during an activation session. Call OnStar technical support to analyze problem and reset | Poor cellular coverage or activation was attempted while driving. Move vehicle to a different location and activate the system while parked |
| OnStar system randomly dials calls on its own (radio mutes and a dial or ring tone is heard from audio system) | Replace the OnStar control unit, if the system places calls without being initiated by:
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Verify with the OnStar call center they are not calling the vehicle or updating software or loading units (minutes) in the control unit |
| OnStar reports they cannot recognize the vehicle when a call is placed from the vehicle | If there are no DTCs present (the LED is green), replace the OnStar control unit | |
| OnStar reports they cannot find the vehicle location when a call is placed from the vehicle | If there are no DTCs present (the LED is green) and the car is outside with a clear view out to the horizon, replace the OnStar control unit |