GMC specific DTC OBD2 code: P1670 Driver 4
GMC specific DTC OBD2 code: P1669 ABS Unit Expected
GMC specific DTC OBD2 code: P1667 Reverse Inhibit Solenoid Control Circuit
GMC specific DTC OBD2 code: P1666 Driver 3 Line 6
GMC specific DTC OBD2 code: P1665 Driver 3 Line 5
GMC specific DTC OBD2 code: P1664 1-4 Upshift Lamp Control Circuit
GMC specific DTC OBD2 code: P1663 Oil Life Lamp Control Circuit
GMC specific DTC OBD2 code: P1662 Cruise Control Inhibit Control Circuit
GMC specific DTC OBD2 code: P1661 MIL Control Circuit
GMC specific DTC OBD2 code: P1660 Cooling Fans Control Circuit