on my '05 I have a small leak (enough to annoy me when crawling under truck) at the radiator, is trans fluid and coming from passenger side line. Is there supposed to be any seal in there? It's not bad, just a little wet, but trans fluid isn't cheap so I'd rather fix a leak than add fluid

 

Is it coming out of the actual radiator connection or the part where the rubber is crimped on the end fitting? That's a common leak point in these trucks.

 

where it goes in the radiator