Sable V6-183 3.0L VIN U FI (1998)
Positive Crankcase Ventilation Valve: Testing and Inspection
Cleaning of the Positive Crankcase Ventilation valve (PCV valve) is not recommended. The positive crankcase ventilation valve should be replaced at
specified mileage intervals. Shake positive crankcase ventilation valve and carefully inspect for splits or cracks. If positive crankcase ventilation valve
does not rattle or is damaged, replace it.