Chevrolet specific DTC OBD2 code: P1622 Cylinder Select
Chevrolet specific DTC OBD2 code: P1638 Generator F-Terminal Circuit
Chevrolet specific DTC OBD2 code: P1656 Driver 2 Line 6
Chevrolet specific DTC OBD2 code: P1623 Transmission Temp Pull-Up Resistor
Chevrolet specific DTC OBD2 code: P1639 5 Volt Reference 2 Circuit
Chevrolet specific DTC OBD2 code: P1657 1-4 Upshift Solenoid Control Circuit
Chevrolet specific DTC OBD2 code: P1624 Customer Snapshot Data Available
Chevrolet specific DTC OBD2 code: P1640 Driver 1-Input High Voltage
Chevrolet specific DTC OBD2 code: P1658 Starter Enable Relay Control Circuit
Chevrolet specific DTC OBD2 code: P1625 PCM System Reset