GMC specific DTC OBD2 code: P1584 Cruise Control Disabled
GMC specific DTC OBD2 code: P1583 Cruise Direction Circuit High Volume
GMC specific DTC OBD2 code: P1582 Cruise Direction Circuit Low Voltage
GMC specific DTC OBD2 code: P1581 Cruise Move Circuit High Voltage
GMC specific DTC OBD2 code: P1580 Cruise Move Circuit Low Voltage
GMC specific DTC OBD2 code: P1579 P/N To D/R At High Throttle Angle
GMC specific DTC OBD2 code: P1578 BBV Sensor Circuit Low Vacuum
GMC specific DTC OBD2 code: P1577 BBV Sensor Circuit Low Voltage
GMC specific DTC OBD2 code: P1576 BBV Sensor Circuit High Voltage
GMC specific DTC OBD2 code: P1575 Extended Travel Brake Switch Circuit