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Data Link References

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

Advanced Parking Assist Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Body Control Module
    • High Speed GMLAN
    • Low Speed GMLAN
    • Local Interconnect Network (LIN)
    •  Scan Tool Does Not Communicate with High Speed GMLAN Device
    •  Scan Tool Does Not Communicate with Low Speed GMLAN Device
    •  DTC U1500-U15BF

Chime Alarm Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Compass Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Content Theft Deterrent Sensor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Digital Radio Receiver Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Driver Door Switch Panel Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Driver Mirror Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Electronic Brake Control Module

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Engine Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Front Seat Heating Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Fuel Pump Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Headlamp Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Headlamp High Beam Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Inflatable Restraint Sensing and Diagnostic Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Info Display Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Infotainment Faceplate Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Inside Rear View Mirror

Local Interconnect Network (LIN)

DTC U1500-U15BF

Instrument Cluster

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Keyless Entry Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Left Front Window Motor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Left Headlamp Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Left Rear Door Switch Panel Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Left Rear Window Motor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Liftgate Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Memory Seat Control Module
    • Low Speed GMLAN
    • Local Interconnect Network (LIN)
    •  Scan Tool Does Not Communicate with Low Speed GMLAN Device
    •  DTC U1500-U15BF

Mobile Telephone Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Multi-axis Acceleration Sensor Module

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Parking Assist Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Handbrake Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Parking Heater Control Module (GME Only)

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Passenger Door Switch Panel Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Passenger Mirror Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Passenger Presence Detection Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Power Sounder Content Theft Deterrent Alarm Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Radio (Base)

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Radio (High Content Navigation)

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Radio (In-Dash CD Changer)

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Radio (Medium Content Navigation)

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Radio (Rear Seat Entertainment Lite)

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Rain/Ambient Light Sensor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Rear Differential Clutch Control Module

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Remote Heater and Air Conditioning Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Right Front Window Motor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Right Headlamp Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Right Rear Door Switch Panel Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Right Rear Window Motor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Steering Angle Sensor Module

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Steering Column Lock Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Sunroof Sunshade Motor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Sunroof Window Motor Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Suspension Control Module

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Tyre Pressure Sensor Locator Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Trailer Interface Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Transmission Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Transmission Range Indicator Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Variable Power Steering Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Vehicle Communication Interface Module (VCIM)
    • High Speed GMLAN
    • Low Speed GMLAN
    •  Scan Tool Does Not Communicate with High Speed GMLAN Device
    •  Scan Tool Does Not Communicate with Low Speed GMLAN Device

Vehicle Direction Camera Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

   


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