On my 2000, it was located on the passenger side of the engine near the front. Now, if I recall correctly when I changed from the LS1 intake to the LS6 intake, the PVC was somewhat different on the LS6 intake (which all LS1 engines got from 2001-2004), I think the pcv valve was part of the plate that covers the lifter valley where it used to be external when using the LS1 intake??? I’ll have to look into it further.