GMC specific DTC OBD2 code: P1626 Theft Deterrent Fuel Enable Signal Lost
GMC specific DTC OBD2 code: P1625 PCM System Reset
GMC specific DTC OBD2 code: P1624 Customer Snapshot Data Available
GMC specific DTC OBD2 code: P1623 Transmission Temp Pull-Up Resistor
GMC specific DTC OBD2 code: P1622 Cylinder Select
GMC specific DTC OBD2 code: P1621 PCM Memory Performance
GMC specific DTC OBD2 code: P1620 Low Coolant Circuit
GMC specific DTC OBD2 code: P1619 Engine Oil Life Monitor Reset Circuit
GMC specific DTC OBD2 code: P1617 Engine Oil Level Switch Circuit
GMC specific DTC OBD2 code: P1615 Loss Of VTD Serial Data