Information Bus: Description and Operation

CLASS 2 SERIAL DATA LINK
The Class 2 serial data link allows these modules to communicate data with each other:
^ Body Control Module (BCM)
^ Driver Information Center (DIC)
^ Electronic Brake Control Module (EBCM)
^ Inflatable Restraint Sensing and Diagnostic Module (SDM)
^ Instrument Panel Cluster
^ Powertrain Control Module (PCM)
^ Radio

In addition, the Class 2 serial data link allows a scan tool to communicate with these modules for diagnostic and testing purposes. The Class 2 serial data link is located at the DLC connector.