Symptoms - Lighting Systems: Notes
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
The following steps must be completed before doing the Symptom tables.
- Perform the DIAGNOSTIC SYSTEM CHECK - LIGHTING SYSTEMS
- No DTCs are set.
- The control module(s) can communicate via the serial data link.
- Review the system operation in order to familiarize yourself with the system functions. Refer to EXTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION or INTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION .