Circuit Description
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.
The Body Control Module (BCM) illuminates LF turn signal lamp during Daytime Running Lamps (DRL) operation in the day mode. The BCM applies steady power to the LF turn signal lamp which illuminates the LF turn lamp in a non flashing mode.