Class 2 Serial Data Link

The class 2 serial data link allows the following modules to communicate and share data with each other:

• Body control module (BCM)
• Digital radio receiver
• Electronic brake control module (EBCM)
• Engine Control Module (ECM) (LY7)
• Instrument panel cluster (IPC)
• HVAC module
• Powertrain control module (PCM) (L26)
• Radio
• Inflatable restraint sensing and diagnostic module (SDM)
• Vehicle control interface module (VCIM)

The class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.