Inspection/Maintenance (I/M) System DTC Table
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| System | DTCs required to Set System Status to Yes |
|---|---|
| Catalyst Monitoring | DTC P0420 |
| EGR | DTC P0401 or P0402 |
| Misfire Monitoring | DTC P0300-P0308 |