Sunshade Vanity Mirror Lamps
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
The BCM supplies battery voltage from the INT LAMPS fuse through the inadvertent power courtesy lamps circuit to the front and rear vanity mirror lamps. When the vanity mirror cover on the sunshade is opened, the vanity mirror lamp switch is closed to ground and the lamp illuminates. Ground for the vanity mirror lamps is provided at G402.