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.
- 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 & Operation .