C 2500 Suburban 2WD V8-454 7.4L VIN J SFI (1998)
Positive Crankcase Ventilation: Service and Repair
CAUTION: An engine can be damaged if it is operated without crankcase ventilation. Therefore, it is important to perform the "Functional
Check". Refer to Procedures / Crankcase Ventilation System Diagnosis. See: Testing and Inspection
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Replace crankcase ventilation components as diagnosis requires. The recommended replacement parts are listed in the Specifications section of
the owners manual of the vehicle.
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Periodically, inspect the hoses and clamps and replace any showing signs of deterioration.