GMC specific DTC OBD2 code: P1602 Loss Of EBTCM Serial Data
GMC specific DTC OBD2 code: P1539 Air Conditioning (A/C) Clutch Feedback Circuit High Voltage
GMC specific DTC OBD2 code: P1540 A/C System High Pressure
GMC specific DTC OBD2 code: P1543 A/C System Performance
GMC specific DTC OBD2 code: P1544 A/C Refrigerant Condition Very Low
GMC specific DTC OBD2 code: P1545 A/C Clutch Relay Control Circuit
GMC specific DTC OBD2 code: P1546 Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage
GMC specific DTC OBD2 code: P1547 A/C System Performance Degraded
GMC specific DTC OBD2 code: P1548 A/C Recirculation Circuit
GMC specific DTC OBD2 code: P1554 Cruise Engaged Circuit High Voltage