I am new to the LS1 motor. I have never worked on them. When it comes to mechanics i ave a good base but the only engines i have ever worked on was the I6 on a 1988 Jeep. I have dealt with vacuum leaks with the jeep but never with the LS1.
Today I had the hood up while changing the oil and I heard hissing sound so I went to looking around and this is what I found. Can yall point me in the right direction and advise me on the part name so I can go and get it replaced.

 

PCV check valve.

Its a common vacuum leak as they get older. Any local auto parts store shold be able to get you a new one. Alot of people use the truck valve from the 6.0L.

 

thank you

 

Good excuse to upgrade to '04 LS6 PCV (at least, that's how I rationalized it )