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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 583 (Data Link Communication System) >> Diagnostic Information & Procedures >> Symptoms - Data Link Communications >> Notes
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Symptoms - Data Link Communications: Notes

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. 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 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 & Operation .
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