Circuit/System Description
WARNING: This page is about a different car, the 2008 Pontiac G8. However, it is still accessible from the selected car via links, so may be relevant.
When the Increase and Decrease interior illumination dimmer buttons are pressed simultaneously for an extended period, the vehicles interior illumination will all set to night mode. Only the vehicles speedometer will remain illuminated. When the Increase and Decrease dimmer button are pressed simultaneously again for an extended period, the vehicles interior illumination will return to previous illumination setting. The Illumination test is performed using the scan tool, and commands the infotainment unit to change the illumination mode. You can choose between Day and Night mode. When day mode is selected the infotainment unit will be illuminated. In night mode the infotainment unit illumination will turn off.