GMC specific DTC OBD2 code: P1409 EGR Vacuum System Leak
GMC specific DTC OBD2 code: P1408 Intake Manifold Pressure Sensor Circuit
GMC specific DTC OBD2 code: P1407 EGR Air Intrusion In Exhaust Supply To EGR Valve
GMC specific DTC OBD2 code: P1406 EGR Valve Pintle Position Circuit
GMC specific DTC OBD2 code: P1405 Exhaust Gas Recirculation System Valve 3
GMC specific DTC OBD2 code: P1404 Exhaust Gas Recirculation System Valve 2
GMC specific DTC OBD2 code: P1403 Exhaust Gas Recirculation System Valve 1
GMC specific DTC OBD2 code: P1399 Wheel Speed Sensor 2, G-Sensor Circuit Intermittent
GMC specific DTC OBD2 code: P1398 Wheel Speed Sensor 2, G-Sensor Circuit High Voltage
GMC specific DTC OBD2 code: P1397 Wheel Speed Sensor 2, G-Sensor Circuit Low Voltage