GMC specific DTC OBD2 code: P1508 IAC System Low RPM
GMC specific DTC OBD2 code: P1526 TP Sensor Learn Not Complete
GMC specific DTC OBD2 code: P1431 Fuel Level Sensor 2 Performance
GMC specific DTC OBD2 code: P1509 IAC System High RPM
GMC specific DTC OBD2 code: P1527 Transmission Range/Pressure Switch Comparison
GMC specific DTC OBD2 code: P1432 Fuel Level Sensor 2 Circuit Low Voltage
GMC specific DTC OBD2 code: P1510 Back UP Power Supply
GMC specific DTC OBD2 code: P1528 Governor
GMC specific DTC OBD2 code: P1433 Fuel Level Sensor 2 Circuit High Voltage
GMC specific DTC OBD2 code: P1511 Throttle Control System-Backup System Performance