Parade Dimming

The parade dimming feature prevents the dimming of the VF displays when daylight is sensed by the Lamp Control Module (LCM) and the park lamps are turned on manually. If the LCM senses that it is dark outside and the park lamps are on, it will allow the VF displays to be dimmed.

All modules with VF displays receive the dimming level from an input on CKT 8 (GRY) or CKT 1244 (BRN). When the LCM determines that the above conditions have been met, it sends a signal to the instrument cluster and the radio via CKT 390 (YEL). For Buick, the radio then relays this information to the heater and A/C programmer and passenger climate control via CKT 724 (PPL/WHT). These modules with VF displays then adjust the dimming level of their VF displays to match the level of the incandescent lights.