This table identifies which serial data link that a particular module uses for in-vehicle data transmission. Some modules may use more than one data link to communicate. Some modules may have multiple communication circuits passing through them without actively communicating on that data link. This table is used to assist in correcting a communication malfunction. For the description and operation of these serial data communication circuits refer to Data Link Communications Description and Operation.
Control Module | Data Link Type | Diagnostic Procedure | ||||
|---|---|---|---|---|---|---|
Schematic Reference: Data Communication Schematics | ||||||
Audio Amplifier | Low Speed GMLAN | |||||
Automatic Forward Lighting System (AFS) Module | High Speed GMLAN | |||||
Auxiliary Body Control Module (XBCM) |
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Body Control Module (BCM) |
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Driver Door Module (DDM) | Low Speed GMLAN | |||||
Driver Position (Memory Seat) Module | Low Speed GMLAN | |||||
Electronic Brake Control Module (EBCM) | High Speed GMLAN | |||||
Electronic Park Brake Control Module | High Speed GMLAN | |||||
Electronic Suspension Control (ESC) Module | High Speed GMLAN | |||||
Engine Control Module (ECM) | High Speed GMLAN | |||||
Fuel System Control Module (FSCM) | High Speed GMLAN | |||||
HVAC Control Module | Low Speed GMLAN | |||||
Inflatable Restraint Sensing and Diagnostic Module (SDM) | Low Speed GMLAN | |||||
Inflatable Restraint Passenger Presence System (PPS) | Low Speed GMLAN | |||||
Instrument Panel Cluster (IPC) | Low Speed GMLAN | |||||
Passenger Door Module (PDM) | Low Speed GMLAN | |||||
Pedestrian Impact Detection System (PIDS) Module | High Speed GMLAN | |||||
Radio | Low Speed GMLAN | |||||
Radio HVAC Control Module | Low Speed GMLAN | |||||
Rear Park Assist (RPA) Module | Low Speed GMLAN | |||||
Remote Control Door Lock Receiver | Low Speed GMLAN | |||||
Theft Deterrent Alarm | Low Speed GMLAN | |||||
Theft Deterrent Control Module | Low Speed GMLAN | |||||
Transfer Case Control Module | High Speed GMLAN | |||||
Transmission Control Module | High Speed GMLAN | |||||
TV Antenna Module | Low Speed GMLAN | |||||
Vehicle Control Interface Module (VCIM) |
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