Hello all. My neighbor has a 2003 Trailblazer that is leaking and she asked me to look at it. The is is coming from a metal plate area near the firewall in the engine bay on the passenger side. The silver metal plate has a few black stems coming off of it. Most of them have a hose connected to it, but the one that is leaking doesn't. It's an L shaped stem that's pointed down. It looks and smells like it might just be water since to is colorless and odorless, but I'm not sure what it's coming from to know if a water drop there is something to worry about or not. I was thinking this may just be condensation from the a/c system, but since it was dropping out of the stem, I wasn't sure if a hose was missing. Any advice would be greatly appreciated. Thank you.