I haven't found this particular thread. Maybe someone can help? I've been sealing and caulking and discovered a leak somewhere in the truck cab. In the photo you can see the caulking in the upper space above the passenger door. I found that when I ran water in that area it leaked inside. I have removed the old caulk with the intention of replacing but saw that there is no caulk in that area on the driver's side. Even if I attempt to caulk how likely am I to reach the affected area? Any ideas what needs to be done?