For 1990-2009 cars only
Crankcase Ventilation System Inspection/Description for GMC Truck GMC C Sierra - 2WD 2002
A plugged positive crankcase ventilation (PCV) pipe/passage way may cause:
| • | Rough idle |
| • | Stalling or slow idle speed |
| • | Oil leaks |
| • | Sludge in the engine |
