Our 2011 Cruze with the 1.4 turbo is currently just over 70,000 miles. Just a few months ago, we ran into a problem that MANY have faced with the PCV failing in the valve cover due to the non return nipple failing in the intake manifold. Our car was surging terribly at idle, even getting to the point of stalling out because it had unmetered air coming through the PCV. This threw a bunch of lean codes. We replaced the valve cover in hopes that the 2012 model valve cover, released to be more resistive to this problem, would hold up longer. We were trying to avoid replacing the hole intake manifold assembly, valve cover, and breather line since we were just beyond powertrain warranty and did not want to pay $1200-1500.
We replaced the valve cover two months ago, and the problem is occurring again. It sounds like it is a very well known issue from GM, yet they seem to not care enough to do anything about it. It makes the car undrivable, and now we will either have to replace the valve cover for $200 every other month, or shell out $1500 in hopes that the non return nipple doesn't fail again, in which case the problem would not return.
Would a GM rep please help me out?