Inspection/Maintenance (I/M) System DTC Table. GMC Truck Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Inspection/Maintenance (I/M) System DTC Table

System	DTCs required to Set System Status to Yes
Catalyst Monitoring	DTC P0420
EGR	DTC P0401 or P0402
Misfire Monitoring	DTC P0300-P0308