Crankcase Ventilation System for Chevrolet Blazer - 4WD 1997

Refer to the illustration for the replacement of the crankcase ventilation system components.

An engine which is operated without any crankcase ventilation can be damaged. Therefore, it is important to replace the crankcase ventilation valve at intervals shown in Section 0B .

Periodically, inspect the entire system and replace any parts showing signs of deterioration.