Hey all, long time reader, new member. I recently completed this fix and I'm having a strange issue. Car is a 2012 cruze 1.4 rs. I'm getting 108" of water (vacuum) at the dipstick at idle, causing a chirping sound at the crank seal. I replaced the valve cover with what was suppose to be oem but based on some dissimilarities, I think it's an aftermarket. I don't appear to have any external vacuum leaks and the car runs normal except the chirping/squeeking. I'd replace the crank seal but I don't feel it's the true issue. Could someone share some advice? My first thoughts are either a leaking intake manifold gasket or the valve cover has a bad "diaphragm/check valve". Thanks in advance. Car has 62k miles with no issues before this recent orange valve disappearance followed by valve cover failure.