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 |
|---|---|---|---|
| B128B | Video Display Output Signal | 8 | Body |
| B128C | Video Display 2 Output Signal | 7 | Body |
| B128D | Video Display Position Signal | 7 | Body |
| B128E | Video Display Position Control Signal | 8 | Body |
| B128F | Right Video Display Mode Control Signal | 8 | Body |
| B1290 | Speaker 19 | 15 | Body |
| B1292 | Driver Side Crash Sensor Fault Signal | 16 | Body |
| B1293 | Speaker 22 | 15 | Body |
| B1294 | Passenger side impact sensor signal lost | 15 | Body |
| B1295 | Speaker 24 | 16 | Body |
| B1296 | Inconsistent information used by the automatic braking (urban) function on collision | 14 | Body |
| B1297 | Automatic braking in case of collision risk (urban) function detects collision | 15 | Body |
| B1298 | Intrusion Sensor Power circuit short to battery (DTC) or short to ground DTC | 16 | Body |
| B1299 | Intrusion Sensor Power circuit short to battery (DTC B1298) or short to ground DTC | 16 | Body |
| B129A | Trunk Lid Ajar Signal Circuit | 9 | Body |
| B129B | High Number Of System Activations | 8 | Body |
| B129C | Trunk Lid Left Actuator Circuit | 7 | Body |
| B129D | Trunk Lid Right Actuator Circuit | 9 | Body |
| B129E | Enable/disable switch - Semi-automatic advanced parallel park | 9 | Body |
| B129F | Function LED - Semi-automatic advanced parallel park | 8 | Body |
| B12A0 | Rear Seat Audio 1 - Audio Control Request Circuit | 12 | Body |
| B12A1 | V574 - Left indirect ventilation flap control motor | 15 | Body |
| B12A3 | Steering column adjust motor drive A | 12 | Body |
| B12A4 | Steering column adjust motor drive B | 11 | Body |
| B12A5 | Steering Column Adjust Motor Drive C | 10 | Body |
| B12A6 | No description available | 8 | Body |
| B12A7 | Steering column tilt sensor A | 9 | Body |
| B12A8 | Steering column telescope sensor A | 9 | Body |
| B12A9 | Steering column tilt sensor B | 8 | Body |
| B12AA | Steering column telescope sensor B | 9 | Body |
| B12AB | Front Window Position Sensor Power Supply | 9 | Body |
| B12AC | Electrochromatic door mirror output | 9 | Body |
| B12AE | Right heat exchanger temperature sensor | 8 | Body |
| B12AF | Left coolant control valve | 8 | Body |
| B12BE | No description available | 9 | Body |
| B12C1 | Left Low Beam Control Circuit | 9 | Body |
| B12C6 | Rear Window Lifter Motor Up Relay | 9 | Body |
| B12C7 | Rear Window Lifter Motor Down Relay | 9 | Body |
| B12F0 | Master exterior lamp switch illumination | 14 | Body |
| B12F1 | Ambient lighting zone 1 output | 13 | Body |
| B12F3 | Secondary tailgate release | 11 | Body |
| B12F4 | Front right anti-pinch module message error | 11 | Body |
| B12F5 | Front right anti-pinch module switch error | 10 | Body |
| B12F6 | Headlamp power supply A | 9 | Body |
| B12F7 | PpositionFailurePresent (Only for AT) | 9 | Body |
| B12F8 | Folding Top Right Luggage Barrier Sensor Circuit | 9 | Body |
| B12FA | Power steering solenoid control A | 9 | Body |
| B12FC | Front Door Lock Feedback | 10 | Body |
| B12FE | Fan - Open Circuit | 10 | Body |
| B12FF | Rear Door Switch Illumination | 10 | Body |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.