Symptoms - Data Link Communications: Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. 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 applicable diagnostic system check before using the Symptom Tables in order to verify that there are no DTCs set.
- Review the system operation in order to familiarize yourself with the system functions. Refer to DATA LINK COMMUNICATIONS DESCRIPTION AND OPERATION .