GMC specific DTC OBD2 code: P1890 ECM Data Input Circuit
GMC specific DTC OBD2 code: P1819 Internal Mode Swtich No Start, Wrong Range
GMC specific DTC OBD2 code: P1850 Brake Band Apply Solenoid Circuit
GMC specific DTC OBD2 code: P1891 Throttle Position Sensor PWM Signal Low
GMC specific DTC OBD2 code: P1820 Internal Mode Switch Circuit A Low
GMC specific DTC OBD2 code: P1851 Brake Band Apply Solenoid Performance
GMC specific DTC OBD2 code: P1892 Throttle Position Sensor PWM Signal High
GMC specific DTC OBD2 code: P1673 Engine Hot Lamp Control Circuit
GMC specific DTC OBD2 code: P1692 Coolant Gage Circuit High Voltage
GMC specific DTC OBD2 code: P1793 Transmission control Module Stack Overrun