Symptoms - Cellular Communication
| Symptoms - Cellular Communication |
| Note | ||
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The following steps must be completed before using the symptom table. |
| 1. |
Perform the
Diagnostic System Check - Vehicle
before using the Symptom Tables in order to verify that all of the following are true:
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| • |
There are no DTCs set.
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| • |
The control modules can communicate via the serial data link.
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| 2. |
Review the system operation in order to familiarize yourself with the system functions. See
OnStar Description and Operation
.
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| Visual/Physical Inspection |
| • |
Inspect for aftermarket devices which could affect the operation of the Radio/Audio System. See
Checking Aftermarket Accessories
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| • |
Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
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| Intermittent |
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .
| Symptom List |
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
| • |
Bluetooth Malfunction
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| • |
OnStar Global Positioning System (GPS) Data Not Current or Inaccurate
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| • |
OnStar Microphone Malfunction
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| • |
OnStar Audio Malfunction
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| • |
OnStar Button LED Malfunction
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| • |
OnStar Call Center Remote Function Requests Malfunction
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| • |
OnStar Button Malfunction
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| • |
Unable to Contact OnStar Call Center
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| • |
OnStar Voice Recognition Malfunction
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| • |
OnStar Steering Wheel Control Functions Malfunction
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