Buick Regal: Diagnostic Information and Procedures

 Symptoms - Lighting

NOTE: The following steps must be completed before using a symptom table. 1. Perform the Diagnostic System Check - Vehicle before using a symptom table in order to verify that all of the following conditions are true: There are no DTCs set. The control modules can communicate via the serial dat

 DTC C0569

Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis An overview of each diagnostic category can be found here:Diagnostic Procedure