Stop Lamp and Center High Mounted Stop Lamp (CHMSL)
WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The stoplamp fuse in the fuse block, supplies battery positive voltage to the normally open stoplamp switch. When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to both left and right stoplamp assemblies and to the Center High Mounted Stoplamp (CHMSL). The stop lamp and Center High Mounted Stoplamp (CHMSL) is are grounded at G401.