Hello everyone, i am pretty new to the forum world so bare with me. I have a 02 lb7. it was brought in with a oil leak. after looking around underneath it for a while i realized the oil was coming from the blow-by tube. this looked unusual for only having 90000 miles on the truck. i replaced the PCV valve and took the cover off the oil cavity that the PCV screws into to make sure it didnt have any trash in it...clean as can be. valve seemed to work but i went ahead and put new one on. still leaked out the blow-by tube. anyone have suggestions on this problem? im kind of stuck on this one. thanks!