GMC specific DTC OBD2 code: P1804 Ground Control Relay
GMC specific DTC OBD2 code: P1831 PC Solenoid Power Circuit Low Voltage
GMC specific DTC OBD2 code: P1868 Transmission Fluid Life
GMC specific DTC OBD2 code: P1810 TFP Valve Position Switch Circuit
GMC specific DTC OBD2 code: P1833 A/T Solenoids Power Circuit Low Voltage
GMC specific DTC OBD2 code: P1870 Transmission Component Slipping
GMC specific DTC OBD2 code: P1811 Maximum Adapt And Long Shift
GMC specific DTC OBD2 code: P1835 Kick-Down Switch
GMC specific DTC OBD2 code: P1871 Undefined Gear Ratio
GMC specific DTC OBD2 code: P1812 Transmission Over Temperature Condition