Quote:
Originally Posted by ksa8907
I would highly suggest a "catch can" on the pcv system. I made a cheap one out of a water supply sediment filter and some fittings for under $50. In 5k miles it will catch maybe half a quart, and thats not even all of it, i need to make more modifications to it.
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On the older ones this was a fix to some degree. After talking to a GM mechanic "off the record", he said my truck already has the supposedly fixed items. He said its the design of the cylinder deactivation that is the cause. When the deactivated cylinder runs through its deactivation cycle the rings are floating and not sealing oil because there's no combustion to expand them to the cylinder wall, and this lets oil gets past the top ring. This also causes the ring pack to get gummed up in a hurry and then it even makes the problem compound itself.
IMHO the design was a complete failure from the beginning. GM knows this and also knows what the cost would be to fix it. Can you say another Bankruptcy.
