Stop Lamps
WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
The STOP LAMPS fuse in the left hand instrument panel (LH IP) junction block supplies battery positive voltage to the normally open stop lamp switch.
When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to both left and right stop lamp assemblies and to the center high mounted stop lamp (CHMSL). The stoplamps are grounded at G401 and G402.