Section 868 (Data Link Communications System)
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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
- DTC U1000 and U1255: Node Alive Message Has Not Been Received From An Unidentified Module
- DTC U1001-U1254: Module U1XXX Communication
- DTC U1300, U1301, or U1305: No Valid Messages Are Detected On The 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