Data Communication System
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Trouble Code Index
- Diagnostic Starting Point - Data Communications
- Control Module U Code List
- DTC B1000
- DTC B1001
- DTC B1016
- DTC C0550
- DTC U0020
- DTC U0073 or U2100
- DTC U0100 - U0299
- Diagnostic Instructions
- 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 U1814
- DTC U1826 or U1827
- DTC U2099
- Symptoms - Data Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with High Speed GMLAN Device
- Scan Tool Does Not Communicate with Low Speed GMLAN Device
- Data Link References
- Repair Instructions
- Description and Operation