Data Communication System
- Schematic Wiring Diagrams
- Data Communication Wiring Schematics
- Body Control System Wiring Schematics
- Power and Ground
- Data Link, Starting and Charging, Engine Controls, AT Shift Lock Controls, Cruise Control, ABS, Brake Warning, Headlights/DRL and Fog Lights References
- Exterior Lights, Interior Lights, Interior Lights Dimming, Power Moding, and Door Lock/Indicator References
- Door Lock/Indicator Cont, Theft Deterrent, Horns, Steering Wheel, Upfitter Provisions, Wiper/Washer, and Release System References
- Diagnostic Information and Procedures
- Control Module U Code List
- DTC B1000: Electronic Control Unit (ECU)/Side Object Detection
- DTC B1001: Option Configuration Error
- DTC B1016: VIN Not Programmed
- DTC B101D: Electronic Control Unit Hardware
- DTC B101E: Electronic Control Unit Software
- DTC C0550: Electronic Control Unit
- DTC U0020: Low Speed CAN Communication Bus Performance
- DTC U0073 or U2100: Control Module Communication Bus Off/ECU HS Bus Off/ECU LS Bus Off/Controller Area Network (CAN) Bus Communication
- DTC U0100 - U02FF: Control Module U Code List
- 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 Instructions
- DTC U1814: Powertrain High Speed Communication Enable Circuit
- DTC U1826 or U1827: Lost Communication With Multi-Axis Acceleration Sensor Module on Bus "B"/Lost Communication With Steering Angle Sensor Module on Bus "B"
- DTC U2099: High Speed Communication Enable Circuit
- 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