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 |
|---|---|---|---|
| P25A2 | Brake system control module 'A' requested MIL illumination | 13 | Powertrain |
| P25A5 | Fuel mode select switch performance | 10 | Powertrain |
| P25A6 | Fuel mode select switch circuit low | 10 | Powertrain |
| P25A7 | Fuel mode select switch circuit high | 10 | Powertrain |
| P25A9 | Piston cooling solenoid valve open circuit | 14 | Powertrain |
| P25AA | Piston cooling solenoid valve short circuit to ground | 15 | Powertrain |
| P25AB | Piston cooling solenoid valve short circuit to power supply | 15 | Powertrain |
| P25AC | Piston cooling oil control circuit performance/stuck off | 11 | Powertrain |
| P25AD | Piston cooling oil control circuit stuck on | 10 | Powertrain |
| P25B0 | Fuel level sensor 1 signal stuck | 13 | Powertrain |
| P25B1 | Fuel level sensor 'B' stuck | 12 | Powertrain |
| P25B3 | Turbocharger/supercharger wastegate 'A' stuck open | 13 | Powertrain |
| P25B4 | Turbocharger/supercharger wastegate 'A' stuck closed | 10 | Powertrain |
| P25B5 | Turbocharger/supercharger wastegate 'B' stuck open | 11 | Powertrain |
| P25B6 | Turbocharger/supercharger wastegate 'B' stuck closed | 10 | Powertrain |
| P25BD | Unmetered fuel - forced engine shutdown | 10 | Powertrain |
| P25BE | Alternative fuel disable control circuit/open | 10 | Powertrain |
| P25BF | Alternative fuel disable control circuit high | 10 | Powertrain |
| P25C0 | Alternative fuel disable control circuit low | 10 | Powertrain |
| P25C1 | Alternative fuel disable signal circuit | 10 | Powertrain |
| P25C2 | Alternative fuel disable signal circuit high | 10 | Powertrain |
| P25C3 | Alternative fuel disable signal circuit low | 10 | Powertrain |
| P25C5 | Brake booster temperature sensor 'A' circuit range/performance | 10 | Powertrain |
| P25C6 | Brake booster temperature sensor 'A' circuit low | 10 | Powertrain |
| P25C7 | Brake booster temperature sensor 'A' circuit high | 10 | Powertrain |
| P25C8 | Brake booster temperature sensor 'A' circuit intermittent/erratic | 10 | Powertrain |
| P25C9 | Brake system control module 'B' requested MIL illumination | 10 | Powertrain |
| P25CA | Intake camshaft actuator parking lock control circuit/open bank 1 | 10 | Powertrain |
| P25CB | Intake camshaft actuator parking lock control circuit low bank 1 | 10 | Powertrain |
| P25CC | Intake camshaft actuator parking lock control circuit high bank 1 | 10 | Powertrain |
| P25CD | Intake camshaft actuator parking lock control circuit/open bank 2 | 10 | Powertrain |
| P25CE | Intake camshaft actuator parking lock control circuit low bank 2 | 10 | Powertrain |
| P25CF | Intake camshaft actuator parking lock control circuit high bank 2 | 10 | Powertrain |
| P2600 | Gear P motor abnormal | 31 | Powertrain |
| P2601 | Motor always rotates | 33 | Powertrain |
| P2602 | Coolant Pump A Control Circuit Low | 32 | Powertrain |
| P2603 | Coolant Pump A Control Circuit High | 32 | Powertrain |
| P2604 | Steering angle range verification failed | 23 | Powertrain |
| P2605 | Motor short circuit | 23 | Powertrain |
| P2606 | Drive circuit short | 24 | Powertrain |
| P2607 | Relay stuck closed | 24 | Powertrain |
| P2608 | Current exceeds limit | 24 | Powertrain |
| P2609 | CAN receiving failure | 25 | Powertrain |
| P260A | PTO control circuit/open | 22 | Powertrain |
| P260B | PTO control circuit low | 22 | Powertrain |
| P260C | PTO control circuit high | 22 | Powertrain |
| P260D | PTO engaged lamp control circuit | 19 | Powertrain |
| P260E | Particulate Filter Regeneration Lamp Control Circuit | 16 | Powertrain |
| P260F | Evaporation system leak detection timeout | 22 | Powertrain |
| P2610 | Linear power controller (LPC) fault | 37 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.