Section 8 (Data Communication System)
WARNING: This page is about a different car, the 2015 GMC Savana 3500, 2015 GMC Savana 2500, 2015 Chevrolet Express 3500, and 2015 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- Control Module U Code List
- DTC B1000: Electronic Control Unit
- DTC B1001: Option Configuration Error
- DTC B1004: Keep Alive Memory
- DTC B1016: VIN Not Programmed
- DTC B101D: ECU Hardware
- DTC B101E: Electronic Control Unit Software
- DTC C0550: Electronic Control Unit Software
- DTC U0020: Low Speed CAN Communication Bus
- DTC U0073 or U2100: Control Module Communication Bus
- DTC U0074: Control Module Powertrain Expansion Communication Bus
- DTC U0100 - U02FF (except U010E, U029D and U029E): Control Module
- 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 U0100 - U02FF (U010E, U029D and U029E only): Lost Communication with Module
- 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
- Repair Verification
- DTC U1500, U1511, U1512, or U1513: LIN Bus/Lost Communication With RCM
- Diagnostic Instructions
- DTC Descriptors
- 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC U1814: Powertrain High Speed Communication Enable
- DTC U1826: Lost Communication With Multi-Axis Acceleration Sensor Module
- DTC U1865: Fuel Operated Heater Lost Communication with Engine Control Module
- DTC U2099: High Speed Communication Enable
- 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