Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 54 (DATA COMMUNICATIONS SYSTEM)
2013 Buick Regal Turbo Premium, Standard Trans
Section 54 (Data Communications System)
2013 Buick Regal Turbo Premium, Standard TransSECTION Section 54 (Data Communications System)
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Control Module U Code List
- DTC B1000
- DTC B1001
- DTC B101D
- DTC B101E
- DTC C0550
- DTC C056D
- DTC C056E
- DTC C078A
- DTC U0001
- DTC U0002
- DTC U0020
- DTC U0073 or U2100
- DTC U0074
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC U0100 - U02FF
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC U0300 - U0336
- DTC U0400 - U05FF
- DTC U1500-U15BF
- DTC U1814
- DTC U18B9-U18BF
- DTC U1901
- DTC U2099
- DTC U2101
- DTC U2103
- DTC U2105-U2199
- Symptoms - Data Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device
- Scan Tool Does Not Communicate with High Speed GMLAN Device
- Scan Tool Does Not Communicate with Mid Speed GMLAN Device
- Scan Tool Does Not Communicate with Low Speed GMLAN Device
- Data Link References
- Repair Instructions
- Description and Operation
- Body Control System Description and Operation
- Data Link Communications Description and Operation
- Circuit Description
- High Speed GMLAN Circuit Description
- Chassis High Speed GMLAN Circuit Description
- Mid Speed GMLAN Circuit Description
- Low Speed GMLAN Circuit Description
- Local Interconnect Network (LIN) Circuit Description
- CAN Graphical Interface (CGI) Circuit Description
- Powertrain High Speed GMLAN Circuit Description
- High Voltage Energy High Speed GMLAN Circuit Description
- Communication Enable Circuit Description
- Data Link Connector (DLC)
- Auxiliary Data Connector
- Serial Data Reference
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.