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 |
|---|---|---|---|
| P27B5 | Intern styrmodul, utväxlingskontroll, prestanda | 10 | Powertrain |
| P27B9 | Pressure control solenoid 'N' performance/stuck off | 10 | Powertrain |
| P27BA | Pressure control solenoid 'N' stuck on | 10 | Powertrain |
| P27C1 | Pressure control solenoid 'p' performance/stuck off | 10 | Powertrain |
| P27C2 | Pressure control solenoid 'p' stuck on | 10 | Powertrain |
| P27C9 | Pressure control solenoid 'R' performance/stuck off | 10 | Powertrain |
| P27CA | Pressure control solenoid 'R' stuck on | 10 | Powertrain |
| P27D1 | Pressure control solenoid 'S' performance/stuck off | 10 | Powertrain |
| P27D2 | Pressure control solenoid 'S' stuck on | 10 | Powertrain |
| P27D9 | Pressure control solenoid 'T' performance/stuck off | 10 | Powertrain |
| P27DA | Pressure control solenoid 'T' stuck on | 10 | Powertrain |
| P27DB | Pressure control solenoid 'T' electrical | 10 | Powertrain |
| P27DD | Pressure control solenoid 'T' control circuit/open | 10 | Powertrain |
| P27DF | Pressure control solenoid 'T' control circuit low | 10 | Powertrain |
| P27E0 | Pressure control solenoid 'T' control circuit high | 10 | Powertrain |
| P27E1 | Electric/Auxiliary Transmission Fluid Pump 'A' Pressure Too Low | 10 | Powertrain |
| P27EB | Transmission Range Control 'A' Position Sensor/Switch Circuit/Open | 10 | Powertrain |
| P27EC | Transmission Range Control 'A' Position Sensor/Switch Circuit Range/Performance | 10 | Powertrain |
| P27ED | Transmission Range Control 'A' Position Sensor/Switch Circuit Low | 9 | Powertrain |
| P27EE | Transmission Range Control 'A' Position Sensor/Switch Circuit High | 9 | Powertrain |
| P27EF | Transmission Range Control 'B' Position Sensor/Switch Circuit/Open | 10 | Powertrain |
| P27F0 | Transmission Range Control 'B' Position Sensor/Switch Circuit Range/Performance | 10 | Powertrain |
| P27F1 | Transmission Range Control 'B' Position Sensor/Switch Circuit Low | 9 | Powertrain |
| P27F2 | Transmission Range Control 'B' Position Sensor/Switch Circuit High | 9 | Powertrain |
| P2800 | Transmission Range Sensor B Circuit (PRNDL Input) | 25 | Powertrain |
| P2801 | Transmission Range Sensor B Circuit Range/Performance | 24 | Powertrain |
| P2802 | Transmission Range Sensor B Circuit Low | 26 | Powertrain |
| P2803 | Transmission Range Sensor B Circuit High | 26 | Powertrain |
| P2804 | Transmission Range Sensor B Circuit Intermittent | 24 | Powertrain |
| P2805 | Transmission Range Sensor A/B Correlation | 26 | Powertrain |
| P2806 | Gear N learning not executed | 26 | Powertrain |
| P2807 | Pressure Control Solenoid G | 25 | Powertrain |
| P2808 | Pressure Control Solenoid G Performance/Stuck Off | 26 | Powertrain |
| P2809 | Pressure Control Solenoid G Stuck On | 26 | Powertrain |
| P280A | Transmission range sensor 'A' circuit not learned | 19 | Powertrain |
| P280B | Transmission range sensor 'B' circuit not learned | 20 | Powertrain |
| P2810 | Pressure Control Solenoid G Electrical | 24 | Powertrain |
| P2811 | Pressure Control Solenoid G Intermittent | 19 | Powertrain |
| P2812 | Pressure Control Solenoid G Control Circuit/Open | 26 | Powertrain |
| P2813 | Pressure Control Solenoid G Control Circuit Range/Performance | 23 | Powertrain |
| P2814 | Pressure Control Solenoid G Control Circuit Low | 28 | Powertrain |
| P2815 | Pressure Control Solenoid G Control Circuit High | 28 | Powertrain |
| P2816 | Pressure Control Solenoid H | 20 | Powertrain |
| P2817 | Pressure Control Solenoid H Performance/Stuck Off | 26 | Powertrain |
| P2818 | Pressure Control Solenoid H Stuck On | 26 | Powertrain |
| P2819 | Pressure Control Solenoid H Electrical | 24 | Powertrain |
| P281A | Pressure Control Solenoid H Intermittent | 19 | Powertrain |
| P281B | Pressure Control Solenoid H Control Circuit/Open | 22 | Powertrain |
| P281C | Pressure Control Solenoid H Control Circuit Range/Performance | 20 | Powertrain |
| P281D | Pressure Control Solenoid H Control Circuit Low | 24 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.