Computer/Integrating Systems
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Notes
- Diagnostic Starting Point - Computer/Integrating Systems
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B1000: Electronic Control Unit (ECU) Performance
- DTC B1004: Keep Alive Memory (KAM) Reset
- DTC B1007: EEPROM Write Error
- DTC B1009: EEPROM Checksum Mismatch
- DTC B1397: Device Voltage Reference Output Circuit Low
- DTC B1440: Power Mode Master Input Circuits Mismatch
- DTC B1477: Retained Accessory Power Circuit Low
- DTC U0101: Lost Communication With Transmission Control Module (TCM)
- DTC U1000: Class 2 Data Link Malfunction
- DTC U1001: class 2 serial data circuit monitor
- DTC U1300, U1301, U1305 (5.3L): Class 2 Data Link Low or High
- DTC U1300, U1301, U1305 (4.2L): Class 2 Data Link Low or High
- DTC U2100: High Speed CAN Communication Bus
- DTC U2105: Lost Communication With Engine Control Module (ECM)
- Symptoms - Computer/Integrating Systems
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Class 2 Device (4.2L)
- Scan Tool Does Not Communicate with Class 2 Device (5.3L)
- Scan Tool Does Not Communicate with High Speed GMLAN Device
- Power Mode Mismatch
- Retained Accessory Power (RAP) On After Timeout
- Retained Accessory Power (RAP) Inoperative
- Control Module References
- Data Link References
- Repair Instructions
- Description and Operation