My side trim is starting to peel off at the front of the door.

How should I re-attach it? If I throw some silicone sealant or something in there I'd need to find some way to clamp it wouldn't I?

peel it and get the 3m double sided adhesive tape stuff. it's the gray stuff with red backing. good stuff. make sure to prep both surfaces carefully..removing all wax and get some isoprene alchohol swabs. stick it straight..it only goes on once. maybe get a 2nd set of hands to help line up.

What he said. I have the same problem but haven't gotten around to fixing it yet.

Thanks for the reply guys .

Will it be waterproof after I re-stick it?

essentially, yes. it's the same adhesive used to hold on autoshade accessories and the new xm/sirius satalite radio antennas.

That stuff's not cheap but it works very well, I second that recommendation. If you get the area clean before you stick it on, you'll probably never have to do it again.