P1451 GMC – Barometric Press. Sensor Performance

P1442 GMC – EVAP Vacuum Sw. High Voltage During Ign. On

P1433 GMC – Fuel Level Sensor 2 Circuit High Voltage

P1431 GMC – Fuel Level Sensor 2 Circuit Performance

P1432 GMC – Fuel Level Sensor 2 Circuit Low Voltage

P1421 GMC – Intake Air Low Pressure Switch Circuit High Voltage

P1423 GMC – Intake Air High Pressure Switch Circuit High Voltage

P1418 GMC – Secondary Air Injection System Relay A Control Circuit High

P1420 GMC – Intake Air Low Pressure Switch Circuit Low Voltage

P1410 GMC – Fuel Tank Pressure System

P1408 GMC – Intake Manifold Pressure Sensor Circuit

P1409 GMC – EGR Vacuum System Leak

P1407 GMC – EGR Air Intrusion in Exhaust Supply to EGR Valve

P1403 GMC – Exhaust Gas Recirculation System Valve 1

P1405 GMC – Exhaust Gas Recirculation System Valve 3

P1398 GMC – Wheel Speed Sensor 2 – G – Sensor Circuit High Voltage

P1399 GMC – Wheel Speed Sensor 2 – G – Sensor Circuit Intermittent

P1397 GMC – Wheel Speed Sensor 2 – G – Sensor Circuit Low Voltage

P1394 GMC – Wheel Speed Sensor 1 – G – Sensor Circuit Intermittent

P1395 GMC – Wheel Speed Sensor 2 – G – Sensor Circuit