Data Link Communication DTCS
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DATA LINK COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| 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 |