Working on a 01 expi with a 4.6. Think I have a vacuum problem was trying to find the PCV valve and not having any luck. I have changed it on my truck before but for some reason having problems finding it this time. I think I found the lines that go to it and they feel like they have fallen off but cant find the valve to hook them back up. Please point me in the right direction and thank you to everyone that responds.

 

its on the passenger side valve cover.

 

Thanks. Found it but still has a miss. I will be right back with the codes it is throwing.

 

Check the elbow at the back of the intake manifold where the PCV hose hooks up. It likes to rot and crack, causing a vacuum leak and lean codes.