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Home >> Cadillac >> 2004 >> Escalade EXT >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Data Link Communication System >> Diagnostic Information and Procedures >> Symptoms - Data Link Communications >> Notes

Symptoms - Data Link Communications: Notes

IMPORTANT: The following steps must be completed before using the symptom tables.
  1. Perform the applicable diagnostic system check before using the Symptom Tables in order to verify that there are no DTCs set.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to Data Link Communications Description and Operation .