Hazard Lamps
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The hazard lamps switch is part of the multifunction switch on the steering column. When the hazard switch is pressed, a ground signal is applied to the body control module (BCM) on the hazard switch signal circuit. Hazard lamp operation is the same as the turn signals, with all turn signals operating simultaneously. The ground for the hazard switch is G200.