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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 | ||||||||
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Schematic Reference: Data Communication Schematics | ||||||||||
K1 14 V Power Module | Powertrain High-Speed GMLAN | |||||||||
G1 A/C Compressor Control Module | High Speed GMLAN | |||||||||
T18 Battery Charger Control Module |
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K16 Battery Energy Control Module (BECM) |
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K9 Body Control Module |
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K10 Coolant Heater Control Module | Low Speed GMLAN | |||||||||
K107A Drive Motor 1 Control Module |
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K107B Drive Motor 2 Control Module |
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S79D Driver Window Switch | Local Interconnect Network (LIN) | |||||||||
M74D Driver Window Motor | Local Interconnect Network (LIN) | |||||||||
K17 Electronic Brake Control Module (EBCM) |
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K20 Engine Control Module (ECM) |
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K27 Fuel Pump Control Module | High Speed GMLAN | |||||||||
K33 HVAC Control Module | Low Speed GMLAN | |||||||||
K112A Hybrid Battery Interface Control Module 1 | BECM Dedicated Bus | |||||||||
K112B Hybrid Battery Interface Control Module 2 | BECM Dedicated Bus | |||||||||
K112C Hybrid Battery Interface Control Module 3 | BECM Dedicated Bus | |||||||||
K112D Hybrid Battery Interface Control Module 4 | BECM Dedicated Bus | |||||||||
K114A Hybrid Powertrain Control Module 1 |
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K114B Hybrid Powertrain Control Module 2 |
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K36 Inflatable Restraint Sensing and Diagnostic Module (SDM) | Low Speed GMLAN | |||||||||
P16 Instrument Cluster | Low Speed GMLAN | |||||||||
K84 Keyless Entry Control Module | Low Speed GMLAN | |||||||||
S79LR Left Rear Window Switch | Local Interconnect Network (LIN) | |||||||||
B119 Multi-axis Acceleration Sensor Module | Chassis High Speed GMLAN | Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device | ||||||||
K41 Parking Assist Control Module | Low Speed GMLAN | |||||||||
K83 Parking Brake Control Module | High Speed GMLAN | |||||||||
K65 Passenger Presence Detection Module | Low Speed GMLAN | |||||||||
S79P Passenger Window Switch | Local Interconnect Network (LIN) | |||||||||
T6 Power Inverter Module |
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K43 Power Steering Control Module | High Speed GMLAN | |||||||||
A11 Radio | Low Speed GMLAN | |||||||||
S79RR Right Rear Window Switch | Local Interconnect Network (LIN) | |||||||||
K29 Seat Heating Control Module | Low Speed GMLAN | |||||||||
B99 Steering Wheel Angle Sensor | Chassis High Speed GMLAN | Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device | ||||||||
K71 Transmission Control Module (TCM) | High Speed GMLAN | |||||||||
K73 Telematics Communication Interface Control Module |
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M75 Windscreen Wiper Motor | Local Interconnect Network (LIN) | |||||||||
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