[arpad_m]

Originally Posted by gpskinzhut

Unless the job is all under warranty, I'd still opt for Katech. If I recall, Zach said they can replicate the same failure on every revision of the OEM pump. While there may or may not be some sales spin to that, if I'm going to have it open anyway, I'd replace it with theirs. Just my 2c.

Wise words, that's what I'll do if the engine ever gets opened up again (she is currently on 12686434, the latest GM oil pump that I know of).

Zach @ Katech said the repro required more and more stress with newer revisions, but eventually all GM pump revisions failed as they are essentially the same design with minor variations, whereas their pump is a ground-up solution. He is obviously a Katech employee, so there's that, but his info has always been trustworthy over time.