Pull the transmission, and change the seal. Either that or you can change the PCV valve, and stop the crankcase from building up the pressure that is pushing the oil out of the rear seal.
Chnging the seal is a $1200 job, and changing the PCV costs about $15.. Take your pick. If you opt for the rear seal, and don't do the PCV.. Don't come crying to me when it is still leaking.
Ive got the whole motor torn apart, im doing the oil pump right now so i was wondering if i could do the rear main while im at it with the oil pan off or if i had to pull the tranny. Im just new to these LS motors. Im guessing its a one piece seal. When you say change the pvc valve do you mean plug it?
No, if it (PCV) was plugged, then the rear main seal would leak. They are not designed to hold pressure, they are more of just a 'splash shield' .
If the seal is not leaking, then don't touch it.
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Thanks for asking.
Oh I see, Yeah ill try that first, thank you for your help.
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