GMC specific DTC OBD2 code: P1539 Air Conditioning (A/C) Clutch Feedback Circuit High Voltage
GMC specific DTC OBD2 code: P1562 Cruise Vacuum Solenoid
GMC specific DTC OBD2 code: P1578 BBV Sensor Circuit Low Vacuum
GMC specific DTC OBD2 code: P1540 A/C System High Pressure
GMC specific DTC OBD2 code: P1563 Cruise Vehicle Speed/Set Speed Difference Too High
GMC specific DTC OBD2 code: P1579 P/N To D/R At High Throttle Angle
GMC specific DTC OBD2 code: P1541 A/C High Side Over Temperature
GMC specific DTC OBD2 code: P1564 Cruise Control System – Vehicle Accel Too High
GMC specific DTC OBD2 code: P1580 Cruise Move Circuit Low Voltage
GMC specific DTC OBD2 code: P1542 A/C System High Pressure High Temperature