Computer/Integrating Systems
- Schematic Wiring 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 U0100 - U0299: Lost Communication With Transmission Control Module (TCM)
- DTC U1000:
- DTC U1001-U1254:
- DTC U1300, U1301, or U1305: Class 2 Data Link Low, Class 2 Data Link High, Class 2 Data Link Low or High (5.3L)
- DTC U1300, U1301, or U1305: Class 2 Data Link Low, Class 2 Data Link High, Class 2 Data Link Low or High (4.2L)
- DTC U2100: High Speed CAN Communication Bus
- DTC U2105-U2199: 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 w/o Immobilizer)
- Scan Tool Does Not Communicate with Class 2 Device (4.2L w/Immobilizer)
- 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 (Except XUV)
- Retained Accessory Power (RAP) On After Timeout (XUV)
- Retained Accessory Power (RAP) Inoperative (Except XUV)
- Retained Accessory Power (RAP) Inoperative (XUV)
- Control Module References
- Data Link References
- Repair Instructions
- Description and Operation