DeVille V8-4.6L VIN Y (1998)
Body Control Module: Description and Operation
Time of Day
A real time clock internal to the Body Control Module (PZM) maintains the time of day. The broadcast of the time of day is as a class 2 message over
the serial data line. The radio receives this data and displays the time of day data. Use the hour buttons and the minute buttons on the front of the radio in
order to change the time of day. The radio sends a class 2 message to the PZM in order to change the time. The radio does not maintain the time.
