Crankcase Ventilation System Inspection/Diagnosis
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
| Concern | Action |
|---|---|
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IMPORTANT:
The maximum crankcase pressure is 4 kPa or 16 in of water at 3, 100 RPM measured at the oil level indicator tube.Oil in the charged air cooler, hoses, turbocharger, or intake manifolds is normal with a closed crankcase ventilation system. |
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| PVC check valve stuck closed |
|
| Odors | Normal situation |
| Noise | Cracked hoses |
| Smoke | Damaged PCV diaphragm |
| Excessive Oil Consumption | Damaged PCV diaphragm, missing or broken spring |