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For 1990-2009 cars only

Data Link Communications Description and Operation for Oldsmobile Silhouette 2002

Data Link Connector (DLC)

The DLC connection is the central location for communicating with all modules that communicate using a serial data link. The DLC provides a power source and a standard connection for the scan tool.

Refer to Data Link Connector Schematics for circuit information.

Class 2 Serial Data Link

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

    • Driver Information Center (DIC)
    • Electronic Brake Control Module (EBCM)
    • Instrument Cluster (IPC)
    • Inflatable Restraint Sensing and Diagnostic Module (SDM)
    • Memory Seat Module (MSM)
    • PASS-Key® III Module (PK3)
    • Powertrain Control Module (PCM)
    • Radio
    • Vehicle Interface Unit (VIU) if equipped