Lighting Trouble Code Diagnosis
WARNING: This page is about a different car, the 1992 Cadillac Allante and 1991 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
Lighting codes (L-Codes) are set by the BCM when a fault is detected with the distributed lighting system. To effectively determine a fault in the lighting system, ALWAYS start by performing the LIGHTING SYSTEM CHECK in TROUBLE SHOOTING.