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 |
|---|---|---|---|
| P306C | Injection time failure | 12 | Powertrain |
| P306D | Cold Start Exhaust Camshaft Position Timing Over-Advanced - Bank 1 Sensor 2 Cold Start Emission Reduction Strategy (CSERS) | 11 | Powertrain |
| P306E | Cold Start Exhaust Camshaft Position Timing Over-Advanced - Bank 2 Sensor 2 Cold Start Emission Reduction Strategy (CSERS) | 11 | Powertrain |
| P306F | Cold Start Intake Air Temperature Sensor 1 Performance Cold Start Emission Reduction Strategy (CSERS) | 12 | Powertrain |
| P3070 | Cold Start Intake Air Temperature Sensor 2 Performance Cold Start Emission Reduction Strategy (CSERS) | 15 | Powertrain |
| P3071 | Reservoir for Additive for Particle Filter: Empty | 15 | Powertrain |
| P3072 | Voltage Supply Relay: Electrical Malfunction | 14 | Powertrain |
| P3073 | Fuel pump circuit: electrical malfunction; Defective | 15 | Powertrain |
| P3074 | Fuel Pump 2 Circuit: Electrical Malfunction | 13 | Powertrain |
| P3075 | Turbo boost 1 2 Trim Adaptation Limit Attained | 13 | Powertrain |
| P3076 | Engine management ECU | 15 | Powertrain |
| P3077 | Sub fuel pump relay | 14 | Powertrain |
| P3078 | Throttle Control: Airflow at Idle too Low | 14 | Powertrain |
| P3079 | Relay for Aux. Fuel Pump for Cold Start (J748) Short to Plus | 13 | Powertrain |
| P307A | Air intake system: flow too low; Lower limit exceeded | 10 | Powertrain |
| P307B | Each Cell VOLT. difference | 9 | Powertrain |
| P307C | Each Cell VOLT. difference | 9 | Powertrain |
| P307D | Each Cell VOLT. difference | 9 | Powertrain |
| P307E | Each Cell VOLT. difference | 9 | Powertrain |
| P307F | Each Cell VOLT. difference | 10 | Powertrain |
| P3080 | Relay for Aux. Fuel Pump for Cold Start (J748) Open or Short to Ground | 16 | Powertrain |
| P3081 | Engine Temperature too Low | 15 | Powertrain |
| P3082 | Clutch position sensor (G476): implausible signal | 14 | Powertrain |
| P3083 | Fluid Level Sensor for Particulate Trap Additive (G504): Elect. Malf | 13 | Powertrain |
| P3084 | Her hücre gerilim farkı | 13 | Powertrain |
| P3085 | Each cell voltage difference [133] | 14 | Powertrain |
| P3086 | Each cell voltage difference [134] | 14 | Powertrain |
| P3087 | Each cell voltage difference [135] | 19 | Powertrain |
| P3088 | Starter relay electrical fault | 19 | Powertrain |
| P3089 | Each cell voltage difference [137] | 15 | Powertrain |
| P308A | Intake Camshaft Profile Actuator 6 Control Circuit Open | 12 | Powertrain |
| P308B | Intake Camshaft Profile Actuator 6 Control Circuit Low Voltage | 9 | Powertrain |
| P308C | Intake Camshaft Profile Actuator 6 Control Circuit High Voltage | 9 | Powertrain |
| P308D | Fuel pump: RPM too low | 10 | Powertrain |
| P308E | Fuel pump electronics: over-temperature | 10 | Powertrain |
| P308F | Throttle control 2: airflow at idle too low; No or incorrect basic setting / adaptation | 12 | Powertrain |
| P3090 | Signal from auxiliary heater: not Present; Lower limit exceeded | 17 | Powertrain |
| P3091 | Signal from auxiliary heater: Always Present; Mechanical failure | 15 | Powertrain |
| P3092 | Internal control module: memory check sum error; Mechanical failure | 14 | Powertrain |
| P3093 | Internal control module: memory check sum error; Short to ground | 16 | Powertrain |
| P3094 | Immobilizer authentication failed | 15 | Powertrain |
| P3095 | Immobilizer no SIM response | 15 | Powertrain |
| P3096 | Internal control module: memory check sum error; Short to ground | 18 | Powertrain |
| P3097 | Control unit faulty | 15 | Powertrain |
| P3098 | Internal control module: memory check sum error; Open circuit | 14 | Powertrain |
| P3099 | Internal control module: memory check sum error; Defective | 14 | Powertrain |
| P309A | Pressure sensor for Disengagment clutch: implausible signal; Lower limit exceeded | 10 | Powertrain |
| P309B | Exhaust Camshaft Profile Actuator 4 Circuit High Voltage | 9 | Powertrain |
| P309C | Actuator for disengagement clutch: mechanical malfunction; Short to plus | 11 | Powertrain |
| P30A2 | Unknown error Code; Mechanical failure | 11 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.