DTC Descriptor
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic procedure supports the following DTC:
DTC U1XXX Lost communication With XXX Module
DTC U1001-U1254
| Control Module | ID Number |
|---|---|
| BCM | 064 |
| DRR | 137 |
| EBCM | 040 |
| HUD | 098 |
| HVAC | 153 |
| IPC | 096 |
| LSDM | 162 |
| PCM | 016 |
| Radio | 128 |
| RSDM | 163 |
| SDM | 088 |
When more than one Loss of Communication DTC is set in either one module or in several modules, diagnose the DTCs in the following order:
- Current DTCs before history DTCs unless told otherwise in the diagnostic tables.
- The DTC which is reported the most times.
- From the lowest number DTC to the highest number DTC.