GMC specific DTC OBD2 code: P1517 Throttle Actuator Control (TAC) Module Performance
GMC specific DTC OBD2 code: P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
GMC specific DTC OBD2 code: P1515 Control Module Throttle Actuator Position Performance
GMC specific DTC OBD2 code: P1514 Throttle Body Performance
GMC specific DTC OBD2 code: P1511 Throttle Control System-Backup System Performance
GMC specific DTC OBD2 code: P1510 Back UP Power Supply
GMC specific DTC OBD2 code: P1509 IAC System High RPM
GMC specific DTC OBD2 code: P1508 IAC System Low RPM
GMC specific DTC OBD2 code: P1504 Vehicle Speed Output Circuit
GMC specific DTC OBD2 code: P1503 Theft Deterrent System – Password Incorrect