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I have an 03 LS6 with 52K miles. Oil drips off passenger side long oil pan bolt and the plastic wing cover is wet. I've removed the clutch/flywheel inspection plate and everything is completely dry, so I'm guessing not rear main seal. I removed the long bolt and it was dry at threads. Some of the oil plan bolts were a little loose, including the long bolts and I re-torqued but leak did not change. From this very informative post, it seems like cam sensor may be the cause: https://ls1tech.com/forums/generatio...n-bolts-2.html
Does it seem like my leak is the cam position sensor?
What was not clear is the size of the replacement o-ring. Several say it is 113 mm, but there is disagreement. Anyone know the correct size and source?
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Cam sensor source of this oil leak? 
