GMC fault codes
Coverage shown is GM data: 17,703 codes · 2,212 vehicle records · 180 ECU records · 10,756 live-data parameters.
GMC shares fault-code data with GM. Data may not cover GMC-specific systems.
Codes 17,703
| Code | Description | Brands | System |
|---|---|---|---|
| U198B | No description available | 6 | Network |
| U198E | Timeout Error of CAN message GW_EM_FrP04 | 8 | Network |
| U198F | No description available | 7 | Network |
| U1990 | Vehicle CAN-nod NPB ogiltig signal | 10 | Network |
| U1993 | Vehicle CAN node NAS no signal | 9 | Network |
| U1994 | Vehicle CAN-nod NAS ogiltig signal | 9 | Network |
| U199B | Lost Communication with Drive Motor Control Module | 8 | Network |
| U199E | No description available | 7 | Network |
| U19A2 | Drive Motor Control Module Communcation Error with 14V Power Module | 7 | Network |
| U19D1 | Lost 3D1 Message From Engine Control Module | 7 | Network |
| U19F1 | Lost 3F1 Message From Body Control Module | 7 | Network |
| U1A16 | No description available | 4 | Network |
| U1A17 | Incomplete MOST ring detected by rear entertainment control module | 4 | Network |
| U1AC1 | Lost 4C1 Message From Engine Control Module | 7 | Network |
| U1AE9 | Lost 4E9 Message From Body Control Module | 7 | Network |
| U1AF1 | Lost 4F1 Message From Engine Control Module | 7 | Network |
| U1B01 | 87 = ECM Signal Not Received | 6 | Network |
| U1C00 | Lost 600 Message From Engine Control Module | 11 | Network |
| U1C05 | Steering Wheel Angle Signal | 6 | Network |
| U1E01 | Battery Control Module Lost Communication With HVM | 8 | Network |
| U1E02 | Subnet 1 communication abnormality | 10 | Network |
| U1E03 | Subnet 2 communication abnormality | 9 | Network |
| U1E04 | Subnet 3 communication abnormality | 8 | Network |
| U1E05 | Subnet 4 communication abnormality | 9 | Network |
| U1E06 | Subnet 5 communication abnormality | 8 | Network |
| U1E07 | Subnet 6 communication abnormality | 10 | Network |
| U1E08 | Subnet 7 communication abnormal | 10 | Network |
| U1E09 | Subnet 8 communication abnormal | 9 | Network |
| U1E0B | Subnet 10 communication abnormal | 9 | Network |
| U1E0C | Lost Communication With Cell Monitor Unit (CMU) 10 | 8 | Network |
| U1E0D | Lost Communication With Cell Monitor Unit (CMU) 11 | 8 | Network |
| U1E0E | Lost Communication With Cell Monitor Unit (CMU) 12 | 8 | Network |
| U1EF3 | No description available | 6 | Network |
| U1EF5 | Internal Control Module Software Incompatibility | 6 | Network |
| U1EFD | Cockpit low-speed CAN network wakes up randomly | 7 | Network |
| U1EFF | LIN3 Fault - Unexpected trigger | 7 | Network |
| U1F00 | Lost Communication with Body Control Module | 7 | Network |
| U1F01 | Unexpectedly wakes up LIN Built-in System Interface (BSI) 1 | 7 | Network |
| U1F02 | Night vision ECU not received light intensity value signal from BCM | 8 | Network |
| U1F03 | Night vision ECU not receiving low beam ON/OFF signal from combination switch | 8 | Network |
| U1F05 | Head up display not received signal from multimedia | 8 | Network |
| U1F06 | Head up display not received signal from night vision system | 8 | Network |
| U1F07 | Infotainment CAN network failure | 7 | Network |
| U1F08 | CAN body network failure | 7 | Network |
| U1F09 | CAN comfort network failure | 7 | Network |
| U1F0A | Multimedia CAN Bus | 7 | Network |
| U1F0E | Transmitting and receiving problems on CAN IS network | 7 | Network |
| U1F0F | ECU No communication on CAN network | 7 | Network |
| U1F10 | LIN communication bus abnormal | 8 | Network |
| U1F14 | CAN signal receiving abnormal (VST/ABS frame lost/checksum) | 8 | Network |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.