Data Communication System

• Schematic and Routing Diagrams
  • Data Communication Schematic Icons
  • Data Communication Schematics
  • Body Control System Schematics
• Component Locator
  • Data Communication Component Views
  • Data Communication Connectors
    • Body Control Module (BCM) - C1
    • Body Control Module (BCM) - C2
    • Body Control Module (BCM) - C3
    • Body Control Module (BCM) - C4
    • Body Control Module (BCM) - C5
    • Body Control Module (BCM) - C6 (PRP)
    • Data Link Connector (DLC)
• Diagnostic Information and Procedures
  • Diagnostic Code Index
  • Diagnostic Starting Point - Data Communications
  • DTC B1000
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Circuit/System Verification
    • Repair Procedures
  • DTC B1004
    • Circuit Description
    • DTC Descriptor
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • DTC B1007
    • Circuit Description
    • DTC Descriptor
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • DTC B1009
    • Circuit Description
    • DTC Descriptor
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • DTC U0073
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTCs
    • Conditions for Setting the DTC
    • Action Taken When the DTCs Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Repair Procedures
  • DTC U0100 - U0299
    • 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
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Repair Procedures
  • DTC U1000 and U1255
    • Circuit Description
    • DTC Descriptors
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Test Description
  • DTC U1001-U1254
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit 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 Testing
    • Repair Procedures
  • DTC U1300, U1301, or U1305
    • Circuit Description
    • DTC Descriptors
    • Conditions for Running the DTCs
    • Conditions for Setting the DTCs
    • Action Taken When the DTCs Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • Symptoms - Data Communications
    • Notes
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Scan Tool Does Not Power Up
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Repair Procedures
  • Scan Tool Does Not Communicate with Class 2 Device
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Testing
    • Repair Procedures
  • Scan Tool Does Not Communicate with High Speed GMLAN Device
    • Circuit Description
    • Diagnostic Aids
  • Data Link References
• Repair Instructions
  • Body Control Module Replacement
    • Removal Procedure
    • Installation Procedure
• Description and Operation
  • Body Control System Description and Operation
    • BCM Functions
    • Power Mode
  • Data Link Communications Description and Operation
    • Circuit Description
    • Data Link Connector (DLC)
    • Class 2 Serial Data Line
    • High Speed GMLAN Serial Data Line (Diesel only)