Ok, I have a L33 out of a 2005 Silverado and I am doing an engine swap with a LS1 intake and the truck DBW. Does anyone have a diagram of the Vacuum system for the L33. I've had a couple of guys over on LS1tech post some diagrams for the LS1 but it deosn't seem to line up correctly, since the DBW throttle body is missing the extra fresh air inlet. Also, when I stopped by my local stealership they claimed the L33 and other newer truck engines don't actually have a PCV valve so I'm really not sure how that affects the situation. Thanks for any help.