Symptoms - Data Link Communications: Notes
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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:
- Perform the diagnostic system check for the subsystem exhibiting the symptoms. The subsystem diagnostic system check will identify where to begin diagnosis of the data link communication system.
- Review the system operation in order to familiarize yourself with the system functions. Refer to DATA LINK COMMUNICATIONS DESCRIPTION AND OPERATION .