I have a 2007 Dodge Ram 1500 Sport. Recently I have noticed a lot of moisture under my rear seats. I have been storing some items in small boxes there. The problem seems to be worse on the drivers side, but I may be wrong as I have many microfiber cloths stored under the passenger side rear seats.
Does anyone else had/have this problem & if so do you have any ideas where it might be coming from & how to fix this issue.

NOTE: I have a solid rear windshield; NO SLIDER.

 

Check to see if water is seaping through the Third Brake Light, it seems like this happens to many people.

 

I had a new lens & gasket put on when I had some body work done a little more than a year ago. I just started seeing water/moisture again this last week or two. I WILL CHECK IT LATER TODAY. Do they sell the gasket/seal at auto parts stores or is it a dealer part?

 

Looking online I only see the gasket/seal sold on a few websites like eBay and Amazon... You could try a couple of things: either try to add more sealant to it and make it a tight and flush fit, OR buy a brand new OEM third brake light with a new and pre-installed gasket/seal on it which shouldn't be too expensive. Personally I would try to buy more sealant and make it a tight fit. If you end up going the other route (buying a replacement third brake light), make sure it is not the cheap aftermarket ones. I once bought one of those crappy aftermarket ones and it was not fully turning off, in addition to not sealing well at all.

 

When I bought my 04 last year, I noticed the 3rd brake light had no gasket - and a pretty large gap around it. I put in new bulbs, the used clear caulk to seal the housing to the cab.

 

That sounds like the perfect thing to use to seal it.

 

[QUOTE=Alex Medeiros;3481275]Looking online I only see the gasket/seal sold on a few websites like eBay and Amazon... You could try a couple of things: either try to add more sealant to it and make it a tight and flush fit, OR buy a brand new OEM third brake light with a new and pre-installed gasket/seal on it which shouldn't be too expensive. Personally I would try to buy more sealant and make it a tight fit. If you end up going the other route (buying a replacement third brake light), make sure it is not the cheap aftermarket ones. I once bought one of those crappy aftermarket ones and it was not fully turning off, in addition to not sealing well at all.[/QU

I am going to the dealer this AM to buy a couple gaskets, so I'll have one on hand when this happens again. I hope this is the problem & not the cab vent(s).

 

After trying every remedy suggested to me, I bought an OEM 3rd brake light online & installed it a few days ago. It rained hard this AM & I just checked the interior. It is still leaking though not as bad. ANY IDEAS, SUGGESTIONS. This happened while sitting in my driveway, no driving.
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Do you have any idea where exactly it's leaking from now? If the new brake light is helping then I would imagine it's not just coming through there...