I am in big trouble. Hopefully you guys can help me. I recently did a clutch swap on my car everything went fine however when I went to bleed the clutch the elbow that attaches on the spout on the transmission was leaking. After looking further I determined that I am missing that little plastic sealer cap that goes on top of the spout on the transmission. This spout runs down to the slave cylinder. Could you please assist me with a GM part number? Any help you can give would be much appreciated.