Mine was leaking from those areas also. The trunk would get water in it. I almost have them fixed after going to the glass shop a couple times.
First, they just put a bead of sealant from the outside just under where the weatherstrip meets the glass. It still leaked a good amount.
So on the second time around, they pulled the glass out and put sealant in certain areas such as under the chrome trim area. Then they put a good amount of black urethane sealant just on the bottom of the outside part of the weatherstrip. It still leaked a little when I checked but it helped a lot. It still looks like they didn't put much sealant on the corner areas and upward a little.
Right now it still has a little amount of water coming in from the corners where the glass sits in the channel, it goes into the channel from the outside and then back up on the inside where the package tray is. I think the best way is putting that black sealant urethane in the channel of the glass and the channel where it touches the metal.
Also, the clips that hold the trim can leak also if they are screwed on. I was told that the factory tack welded them on but mine have screws. You can check yours by looking inside the trunk where the rear window area is.
They need to be careful if they pull the glass! If it breaks, I was quoted at about $500 for a new one!
