My ex-wife’s 2015 2.4 was tested for oil consumption and qualified for the oil consumption repairs (pistons, rings, timing chain, etc). Part of that procedure for the 2010-2013 vintage (but her 2015 ended up getting covered after the dealership fought with GM), is to use a 1/16” drill bit to clear the intake PCV orifice so the PCV system properly vents. GM clearly recognizes/acknowledges this issue and even adds this procedure to the bulletin for oil consumption-approved vehicles. I also installed the FC219 vented cap. I also replaced the PCV tube a time or two (it can be easily cleaned out without replacing it but it was under $10 so I just replaced it). I cleared the lines a few times a year myself as a PM. If it weren’t for all of that, her 2015 probably would have likely blown a rear main seal by now leaving her and the kids stranded.. I worry this could still happen, b/c I’m no longer around to do the “PCV PMs” and clear the lines in the winter.
For those who haven’t yet had a blown seal, if you’re noticing the oil consumption, winter gunk, etc, see if you’d qualify for coverage under the bulletin or GM approval if you pass the consumption test (they check oil levels over the span of a few thousand miles and if it’s below a certain level, then coverage should apply)..
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