I think I may have figured out the cause of this. My windlace on the passenger side is and has been in bad shape since I got the truck. The PO must have replaced the drivers side, because it doesn't look that bad. I actually bought new material for these when I bought the door seal last year. I've replaced both the door seals this past winter, but the passenger door windlace had a piece break off a few months ago, it's in such poor shape. (The stuff looks to me like either its had solvent sprayed/wiped on it, or like it was heated with a torch, or something. I don't know if you can see from the pics, but it looks 'boiled', as when heat or strong chemicals get on rubber. Anyway, since the crack is at the spot that the missing piece is at, maybe this is what caused it. It's time to get that old stuff out and the new one's in!! What's everybody else think?
http://pic20.picturetrail.com/VOL1373/13685773/24611517/413291170.jpg http://pic20.picturetrail.com/VOL1373/13685773/24611517/413291169.jpg http://pic20.picturetrail.com/VOL1373/13685773/24611517/413291173.jpg
