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2002 Chevy 1500 5.3L lifter noise? Oring Replacement??


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So my truck has always made a lifter noise. it is not a typical tick
though. it sounds more like a squeaking/light rubbing. the oil pressure
gauge has some slight movement but not much. I have read many articles
about chevy lifter noise but for my specific year I found a service
bulletin about replacing the oring between the oil pump screen and oil
pump. I was wondering before I go through all the time and trouble to
replace it, has anyone had success or heard or success from this
replacement in getting rid of the noise? This noise is constant and does
not go away after running for awhile and luckily i have seen no metal
in the oil. thanks

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