GMC specific DTC OBD2 code: P1663 Oil Life Lamp Control Circuit
GMC specific DTC OBD2 code: P1682 Driver 5 Line 2
GMC specific DTC OBD2 code: P1705 P/N Signal Output Circuit
GMC specific DTC OBD2 code: P1664 1-4 Upshift Lamp Control Circuit
GMC specific DTC OBD2 code: P1683 Driver 5 Line 3
GMC specific DTC OBD2 code: P1740 Transmission Torque Reduction Request Circuit
GMC specific DTC OBD2 code: P1665 Driver 3 Line 5
GMC specific DTC OBD2 code: P1684 Driver 5 Line 4
GMC specific DTC OBD2 code: P1743 TP Signal From ECM
GMC specific DTC OBD2 code: P1666 Driver 3 Line 6