Originally Posted by POWERFREAK
did they do it under warranty for you? how many miles did you have on it when it went?
most good performance shops will automatically replace the oilpump when doing a cam since it's right there (on these motors).
I went to the shop that did my heads and cam. They found the damaged o-ring and check valve after removing the pump. I wasnt having GM do it since this is $$ out of my pocket.