Section 1654 (Data Link Communication System)
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point-Data Link Communications
- Diagnostic Trouble Code (DTC) List
- DTC U1000 and U1255: Critical Operating Parameter Has Not Been Associated
- DTC U1001 to U1254: Module U1XXX Communication
- DTC U1300, U1301, or U1305: Class 2 Serial Data Circuit
- Symptoms-Data Link Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Class 2 Device
- Description and Operation