I just have a quick question and hoping someone can help. I just rebuilt and beefed up my 2003 Hummers H2’s 4L60E (burned clutch discs) tranny and am putting it back into the Hummer. I’m stuck on one part that I just can’t seem to remember. I can’t remember for the life of me if the oil line connectors are supposed to contain an o-ring on the inside of them or not please see pic)? I need to figure this out before I push the lines back into the connectors. I appreciate any answers you all may be able to provide and thank you.