Class 2 Serial Data Link
The class 2 serial data link allows the following modules to communicate and share data with each other:
- Auxiliary power drop connector
- Body control module (BCM)
- Digital radio receiver (U2K or U2L)
- Driver information center (DIC)
- Electronic brake control module (EBCM)
- Instrument panel cluster (IPC)
- OnStar module (UE1)
- Powertrain control module (PCM)
- Radio
- Inflatable restraint sensing and diagnostic module (SDM)
The class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.