Hello, today I washed my truck and was starting to clean the inside of the cab, when I was cleaning my rear seats I saw where the back cab window is was wet and the top inliner was wet. Any body have this problem? Do I need to replace the gasket on the back window? This is the first time it leaked. Thanks for your input!

 

It's probably your 3rd brake light. Those are very common for leaking.

 

Either replace it or caulk the **** out of it with silicone and the issue will be fixed. The gasket around the light breaks down and is no longer sealed correctly.

 

There is an updated brake light/gasket from Ford, call your dealer and they should be able to set you up. When I replaced mine it was around $40 and it never leaked after I replaced it with the updated version.

 

3rd brake light is the culprit.....take it off clean up the surfaces and use some clear silicon caulk to seal....

 

You guys do realize once you put the silicone on it's there to stay unless you sand the paint off right? And that nothing sticks to silicone not even more silicone will adhere to it. If you ever have paint work done and you get just a thin coating on other surfaces from your fingers the paint will slide right off. I really despise silicone because it can cause more problems than it cures, go ask a paint and body guy what they think of silicone just make sure you are standing back a little bit. Don't get me wrong it has a time and place for it's use but just use caution when using it.

 

That's why you pull the light and put the silicone under neath the light and gasket then reinstall the light. Plus you can buy paintable silicone but it cost twice as much but I would never put it on the exterior of it when its possible to seal it up from the inside and reinstall the light.

 

Great info thanks alot!!! I will need to vist the dealer to get the gasket.

 

I unerstand that you put it underneath, but as someone that sells silicone there is no 100% silicone product that is paintable period... There may latex/silicone painters caulking but there is no silicone sealant that is paint friendly there is a reason why body shops use 100% silicone free products in the shops, it's because all it takes is a small amount to ruin a paint job and hundreds of hours of work. It is not something that you want to be using anywhere near a painted surface on a vehicle. If you think I am joking go put a little silicone based lube or sealant on your finger and touch a piece metal then try and paint it and see what happens. I have spent enough time around paint/body guys and had my own personal experiences with the stuff to know you don't want to use it.

 

You'er welcome.