Data Communication System
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Data Communications
- DTC B1000
- DTC B1004
- DTC B1007
- DTC B1009
- DTC U0001
- DTC U0073
- DTC U0100 - U0299
- DTC U1000
- DTC U1001-U1254
- DTC U1300, U1301 or U1305 (4.2L)
- DTC U1300, U1301 or U1305 (5.3L)
- DTC U2100
- DTC U2105-U2199
- Symptoms - Data Communications
- 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
- Data Link References
- Repair Instructions
- Description and Operation