PCV Drain Tube Deletion

The 1.4L 4-cylinder engine (RPO LE2, LV7) and 1.5L 4-cylinder engine (RPO LYX, LFV, L3A) on 2016-2019 Encore, Cruze, Equinox, Malibu, Spark, Trax, Volt, and Terrain models features a Positive Crankcase Ventilation (PCV) drain tube. (Fig. 24)


Fig. 24


GM has determined that the PCV drain tube is not needed and the drain tube will be deleted in mid-year 2019 production going forward. As a result, the PCV drain tube will no longer be present when performing engine service on these engines nor will it be available as a service part. A replacement for the tube is not required.

If the PCV drain tube needs to be replaced, remove the bolt (Fig. 25, #1) that secures the tube to the crankshaft oil deflector and bedplate. The crankshaft oil deflector does not need to be removed. Remove the old tube and discard it. (Fig. 25, #2) Replace the drain tube bolt with a new shorter bolt to retain the crankshaft oil deflector. The shorter bolt must be used if the PCV drain tube is discarded.


Fig. 25


Refer to Bulletin #19-NA-080 for additional information.


– Thanks to Jeff Kropp

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