C 3500 HD Truck 2WD V8-6.5L DSL Turbo VIN F (2001)
Information Bus: Description and Operation
Class 2 Communications
The Class 2 serial data link allows modules to transmit, receive, or exchange data.
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Electronic Brake Control Module (EBCM)
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Powertrain Control Module (PCM)
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Vehicle Theft Deterrent (VTD)
The Class 2 serial data link allows a Scan Tool to communicate with these modules for testing purposes, checking for DTCs, and to
activate/enable/disable functions.
The DLC has a ground for the serial data signal exiting the Scan Tool.
The scan tool is also supplied power and ground at the DLC.
