this sucks i took my truck through a car wash the other day and heard this dripping looked back to see that there was water dripping from the sliding window track. so i'm like SOB and got out to look and the seal right under my third brake light was pushed outward about 2mm from the cab and it was about 15" across. so i called an autoglass company and its gonna cost about $125 dollars total to have it fixed.

 

Run a bead of clear silicone on it. I did and it never leaked again.

 

Man you must have gotten your whole interior wet when you get back in the truck.Why didnt you wait until you were out of the car wash? lol


But to help with your problem, I dont no how bad it really looks with out seeing a pic or something but you could try to maby push the seal back in and run some silicone over it.