Circuit Description
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) controls the illumination dimming of all of the control switch indicators. The BCM will set the control switch indicator illumination level according to the IP dimmer switch signal received when the component is activated and the indicator is ON.