I have a leaking (lower) cooler line. It looks like it leaks at the crimped connector between the line, and the hose. I tried to order new ones but RockAuto cancelled my order, no idea when or if they are getting new ones. Is this another dreaded dealer only part?

You mean the trans cooler lines?

Yes. The tranny cooler lines. The lower one is leaking.

You can replace the line, a parts store may have these. Or you can cut the bad section and slide a rubber hose over the line and clamp it down. Just make sure you use a pipe cutter to cut the line, not a hacksaw.