Dimming Control
WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Display dimming for DIC follows radio dimming characteristics. Upon activation of park lamps, display steps from maximum brightness to dim. While in dim mode, further dimming is controlled by PWM Dimming Signal of instrument panel dimming control. Display goes blank upon lowest dimming request of dimming control.