Yukon leaks transmission fluid

I have a problem with leaking transmission fluid. I find it all over the right front suspension, and I can’t figure out where it is coming from or how to fix it. Help!

Check the transmission fluid cooling lines that run along the engine to the radiator.

Tester

Amusing. Trans leaks but I cannot see leak. How can I see leak? Uh, look harder? Or look better? Or pay someone to look?