Clicking during acceleration while warm

By woogs
February 2, 2007 in Ask A GM Technician

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woogs

Posted February 2, 2007

I have a '95 C1500 with the 5.7

It's been clicking under acceleration, up under the hood. The click changes speeds along with the RPM's. It sounds like a lifter and I don't know what piston slap sounds like. But it's when the engine is warm, and usually only under acceloration, I don't hear it at low RPM's while cruising. I read something about a TSB about an o-ring being bad near the oil pump? I've heard it on several trucks including my folks '99 suburban with the 5.7 so I guess it's kinda common. But I still would like to know what it is, and if I can fix it.

-thanks, matt

*EDIT* it has 171k miles

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