Lamps-ON Chime
If the LH front door is open and the Body Control Module (MALL) does not detect voltage at the lamps off input CKT 1785 (LT BLU)(Oldsmobile) or CKT 549 (PPL/WHT)(Buick) and no voltage is detected at CKT 39 (PNK), the fast-pulsed lamps on chime sounds.