Class 2 Serial Data Link
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The class 2 serial data link allows the following modules to communicate and share data with each other:
- Body Control Module (BCM)
- Electronic Brake Control Module (EBCM)
- HVAC Control Module (w/CJ2, Auto Temp Control)
- Inflatable Restraint Sensing and Diagnostic Module (SDM)
- Instrument Panel Cluster (IPC)
- Powertrain Control Module (PCM)
- Vehicle Interface Unit (VIU), if equipped
The Class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.