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Message: <blockquote data-quote="PoManNox" data-source="post: 24522" data-attributes="member: 8300"><p>That being the case, I'd throw a new vacuum pump, vac pump shaft seal and new gasket on it.    I've seen some videos where guys use RTV to seal the vac pump housing to the head, but there's still the shaft seal that can leak inside of that space.     As you've probably read these cam driven vac pumps can cause catastrophic engine damage if the pump looses a vane on the fly, binds up and breaks the end off the exhaust cam.     This problem seems to be more prevalent on the GMC Terrain 1.5T and the Malibu 1.5T for whatever reason, but they all share the same engine.</p></blockquote><p></p>