DeVille V8-4.6L VIN Y (1998)
Body Control Module: Description and Operation
Chime Request Function
When Body Control Module (PZM) requests the instrument cluster to display a driver waring or status message, the PZM also requests a chime
appropriate for that message. The instrument cluster than sends a request to the radio to sound the chime. The one exception is the seat belt indicator ON,
the PZM sends a class 2 request for a chime directly to the radio.
