Data Communication System
- Schematic & Routing Diagrams
- Diagnostic Information & 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 & U1255
- DTC U1001-U1254
- DTC U1300, U1301, or U1305
- DTC U2100
- DTC U2105-U2199
- Symptoms - Data Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Class 2 Device
- Scan Tool Does Not Communicate with High Speed GMLAN Device
- Data Link References
- Repair Instructions
- Description & Operation