When I lowered and raised my tailgate window the seal that presses up against the window popped loose.

I need to find a relatively easy and cheap way of reattaching and sealing a loose seal on the tailgate.

Does anyone have any ideas?

 

I did that on a 90 rummer I removed all the plastic clips from the rubber stripp and fixed any rust any glued the rubber strip down with clear silicone it worked very nicely PM me if u got questions