Data Link References
This table identifies which serial data link that a particular device uses for in-vehicle data transmission. Some devices may use more than one data link to communicate. Some devices 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. Not all devices listed will be applicable to all vehicles. Refer to the schematics to determine which devices apply. For the description and operation of these serial data communication circuits, refer to Data Link Communications Description and Operation. Reference Information Schematic Reference: Data Communication Schematics
| Code | Device | Data Link Type | Diagnostic Procedure | |
|---|---|---|---|---|
| A11 | Radio | CAN 5 Ethernet 2 Ethernet 4 Ethernet 5 Ethernet 6 | Scan Tool Does Not Communicate with Device on CAN 5 DTC B1A1B DTC B1A1F DTC B1A21 DTC B1A23 | |
| A26 | Heater and Air Conditioning User Interface Control - Front | CAN 5 | Scan Tool Does Not Communicate with Device on CAN 5 | |
| A34 | Heater and Air Conditioning Auxiliary Control | CAN 5 | Scan Tool Does Not Communicate with Device on CAN 5 | |
| A103 | Roof Console | Local Interconnect Network (LIN) | DTC U1100-U12FF | |
| B75 | Mass Airflow Sensor | Local Interconnect Network (LIN) | DTC U0600-U06FF | |
| B110 | Battery Monitor Module | Local Interconnect Network (LIN) | DTC U0100-U02FF | |
| B117A | Windshield Outside Moisture/Ambient Light and Humidity Sensor | Local Interconnect Network (LIN) | DTC U0100-U02FF | |
| B136 | Exhaust Particulate Matter Sensor | Powertrain CAN | DTC U0076 | |
| B174W | Front View Camera - Windshield | CAN 2 CAN 8 | Scan Tool Does Not Communicate with Device on CAN 2 Scan Tool Does Not Communicate with Device on CAN 8 | |
| B195A | Nitrogen Oxides Sensor 1 © 2023 Ge | Powertrain CAN neral Motors. All rights reserve | DTC U0076 d. |
| Code | Device | Data Link Type | Diagnostic Procedure | |
|---|---|---|---|---|
| B195B | Nitrogen Oxides Sensor 2 | Powertrain CAN | DTC U0076 | |
| B195C | Nitrogen Oxides Sensor 3 | Powertrain CAN | DTC U0076 | |
| B218L | Side Obstacle Detection Control Module - Left | CAN 4 | Scan Tool Does Not Communicate with Device on CAN 4 | |
| B218R | Side Obstacle Detection Control Module - Right | CAN 4 | Scan Tool Does Not Communicate with Device on CAN 4 | |
| B233B | Forward Range Radar Sensor - Long Range | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 | |
| B233LR | Short Range Radar Rear Sensor - Left | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 | |
| B233RR | Short Range Radar Rear Sensor - Right | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 | |
| E40 | Air Heater | Local Interconnect Network (LIN) | DTC U1100-U12FF | |
| G10L | Cooling Fan Motor - Left | Local Interconnect Network (LIN) | DTC U0600-U06FF | |
| G10LW | Cooling Fan Motor - Lower | Local Interconnect Network (LIN) | DTC U0600-U06FF | |
| G10R | Cooling Fan Motor - Right | Local Interconnect Network (LIN) | DTC U0600-U06FF | |
| G17 | Heater Coolant Pump | Local Interconnect Network (LIN) | DTC U0100-U02FF | |
| K4 | Running Board Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 | |
| K5 | Automatic Level Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 | |
| K9 | Body Control Module | CAN 2 Local Interconnect Network (LIN) | Scan Tool Does Not Communicate with Device on CAN 2 DTC U1500-U15FF | |
| K19 | Suspension Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 | |
| K20 | Engine Control Module | CAN 2 | Scan Tool Does Not | |
| © 2023 Ge | neral MCoAtNor s3. All rights reserve | Communicate with d. |
| Code | Device | Data Link Type | Diagnostic Procedure | |
|---|---|---|---|---|
| Powertrain CAN Local Interconnect Network (LIN) | Device on CAN 2 Scan Tool Does Not Communicate with Device on CAN 3 DTC U0076 DTC U1500-U15FF | |||
| K29FV | Front Seat Heater Vent Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF | |
| K29R | Rear Seat Heater Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF | |
| K32 | Heated Steering Wheel Module | Local Interconnect Network (LIN) | DTC U0100-U02FF | |
| K36 | Restraints Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 | |
| K38 | Chassis Control Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 | |
| K40D | Driver Seat Adjuster Memory Module | CAN 4 Local Interconnect Network (LIN) | Scan Tool Does Not Communicate with Device on CAN 4 DTC U1500-U15FF | |
| K40P | Passenger Seat Adjuster Memory Module | CAN 4 Local Interconnect Network (LIN) | Scan Tool Does Not Communicate with Device on CAN 4 DTC U1500-U15FF | |
| K43 | Power Steering Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 | |
| K56 | Serial Data Gateway Module | CAN 1 CAN 2 CAN 3 CAN 4 CAN 5 CAN 8 Ethernet 2 Ethernet 4 Ethernet 7 | Scan Tool Does Not Communicate with Device on CAN 1 Scan Tool Does Not Communicate with Device on CAN 2 Scan Tool Does Not Communicate with Device on CAN 3 Scan Tool Does Not Communicate with Device on CAN 4 Scan Tool Does Not Communicate with Device on CAN 5 Scan Tool Does Not Communicate with | |
| © 2023 Ge | neral Motors. All rights reserve | d. Device on CAN 8 |
| Code | Device | Data Link Type | Diagnostic Procedure |
|---|---|---|---|
| DTC B1A1B DTC B1A1F DTC B1A25 | |||
| K60 | Column Lock Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K61 | Sunroof Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| K67 | Trailer Brake Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| K68 | Trailer Lamp Control Module | CAN 4 | Scan Tool Does Not Communicate with Device on CAN 4 |
| K69 | Transfer Case Control Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 |
| K71 | Transmission Control Module | CAN 2 Local Interconnect Network (LIN) | Scan Tool Does Not Communicate with Device on CAN 2 DTC U1500-U15FF |
| K73 | Telematic Control Module | CAN 5 Ethernet 4 | Scan Tool Does Not Communicate with Device on CAN 5 DTC U1008 |
| K77 | Remote Function Actuator Module | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| K85P | Restraints Occupant Classification System Module - Passenger | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K99 | Steering Column Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| K104DP | Front Seat Bladder Control Module - Driver Primary | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| K104PP | Front Seat Bladder Control Module - Passenger Primary | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| K111 | Fuel Pump Power Control Module | Powertrain CAN | DTC U0076 |
| K115 | Reductant Control Module | CAN 3 | Scan Tool Does Not Communicate with Device on CAN 3 |
| Code | Device | Data Link Type | Diagnostic Procedure |
|---|---|---|---|
| K124 | Image Processing Module | CAN 1 CAN 2 CAN 8 | Scan Tool Does Not Communicate with Device on CAN 1 Scan Tool Does Not Communicate with Device on CAN 2 Scan Tool Does Not Communicate with Device on CAN 8 |
| K157 | Video Processing Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K160 | Brake System Control Module | CAN 1 CAN 2 Local Interconnect Network (LIN) | Scan Tool Does Not Communicate with Device on CAN 1 Scan Tool Does Not Communicate with Device on CAN 2 DTC U1500-U15FF |
| K164 | Differential Control Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 |
| K169 | Folding 3rd Row Seat Module | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| K171 | Rear Closure Hands Free Module | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| K175 | Front Floor Console Compartment Cooler | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| K182 | Parking Assist Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K194 | Rear Gate Module | CAN 4 | Scan Tool Does Not Communicate with Device on CAN 4 |
| K212 | Gear Shift Control Module | CAN 3 Powertrain CAN | Scan Tool Does Not Communicate with Device on CAN 3 DTC U0076 |
| K214 | Trailer Tire Pressure Indicator Module | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| K219 | Lighting Control Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 |
| Code | Device | Data Link Type | Diagnostic Procedure |
|---|---|---|---|
| K230 | Front Floor Console Control Module | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| M4 | Air Inlet Valve Actuator | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M6BP | Rear Programmable Temperature Valve Actuator | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M6PL | Programmable Temperature Valve Actuator - Left | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M6PR | Programmable Temperature Valve Actuator - Right | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M10 | Charge Air Cooler Coolant Pump | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M37 | Mode Valve Actuator | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M37BP | Rear Programmable Mode Valve Actuator | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M45 | Rear Window Wiper Motor | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| M74D | Front Side Door Window Regulator Motor - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| M74P | Front Side Door Window Regulator Motor - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| M96 | Active Grille Air Shutter Actuator | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| M96B | Active Grille Air Shutter Actuator 2 | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| P16 | Instrument Panel Cluster Control Module | CAN 5 Ethernet 7 Local Interconnect Network (LIN) | Scan Tool Does Not Communicate with Device on CAN 5 DTC U1008 DTC U1500-U15FF |
| P22F | Video Display - Right Front Seat Back | Ethernet 5 | DTC B1A21 |
| P25 | Content Theft Deterrent Alarm | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| P29 | Head-Up Display | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| Q97B | Engine Coolant Flow Control Valve - Block | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| Code | Device | Data Link Type | Diagnostic Procedure |
|---|---|---|---|
| S64D | Front Seat Adjuster Switch - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| S64P | Front Seat Adjuster Switch - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| S70R | Radio Control Switch - Steering Wheel | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| S76 | Trailer Brake Control Switch | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| S79D | Front Side Door Window Control Switch - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| S79LR | Rear Side Door Window Switch - Left | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| S79P | Front Side Door Window Switch - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| S79RR | Rear Side Door Window Switch - Right | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| S91 | Parking Brake Control Switch | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| T1 | DC/AC Converter Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF |
| T3 | Audio Amplifier | CAN 5 Ethernet 6 | Scan Tool Does Not Communicate with Device on CAN 5 DTC U1008 |
| T19 | Multifunction Power Supply Converter | Powertrain CAN | DTC U0076 |
| T22 | Wireless Accessory Charging Module | CAN 5 | Scan Tool Does Not Communicate with Device on CAN 5 |