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Symptoms - Data Link Communications: Notes

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Important:  The following steps must be completed before using the symptom tables

  1. Perform the Diagnostic System Check for the subsystem exhibiting the symptoms. Refer to CONTROL MODULE REFERENCES in Body Control System. The subsystem diagnostic system check will identify where to begin diagnosis of the data link communication system.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to DATA LINK COMMUNICATIONS DESCRIPTION AND OPERATION  .
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