I have a 2011 GMC Terrain SLT V6 3.0L. We did a tune up on it yesterday and noticed a lot of oil blow by in the air intake hose, filter, throttle body and in 2 of the spark plugs. Has anyone else had this problem or can someone guide me as to what would be causing this? My car does have the excessive oil consumption issue that everyone else seems to be having. It also went in to limp mode a couple weeks ago. We added a quart of oil and it was fine. Anyone else have these problems?