Symptoms - Engine Electrical: 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 using the symptom tables.

Perform DIAGNOSTIC SYSTEM CHECK - ENGINE ELECTRICAL before using the Symptom Tables in order to verify that all of the following are true:
- There are no DTCs set
- The control modules can communicate via the serial data link.
Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following system operation:
- BATTERY DESCRIPTION AND OPERATION