So here's the scoop:

We had a bit of rainfall last night here in the Florida panhandle and of course I park my 2004 H2 in the driveway. None of my windows were open and I DO NOT have a sunroof.
When I opened the door this morning I noticed the driver and front passenger floor boards are soaked!! I was pi$$ed to say the least. There are no signs of leaks that I can find, and this is the only area where it is wet..
I've done a bit of research so I guess I can rule out anything to do with the AC since my truck was off. My next assumption is to rule out the sun roof drains.. considering I don't have a sunroof.
What gives!? My door seals seem pretty good, but I guess I will tear them off and reseal them and go from there. Or is there something else that might cause a leak like this?
What has everyone used to re-attach their door seals once they've been removed and cleaned off?!
Thanks for any and all advice in advance!

 

I had the same problem on drivers side only. Deduction tells me that it's the door seals at top a the door. How I know, is like this. We just had several days of rain with wind and it came from the northeast. My bummer was parked with the driver side facing east so the wind and rain got in and soaked the carpet on driver side probably running down the seal to the carpet.

Looking at the seals they need replacing cause they are broken and short sections are missing. I would guess ice formed and the seals stuck at some time and the frozen door was forced open taking the seals apart

 

The top front corner lights would be my guess. The big rubber plug through the roof on those dry out and leak. Mine were literally loose in the holes.

 

How did you guys fix the issue? Did you just buy replacement parts? Or did you pull a McGuyver? I'd like to take care of it myself if I can. I have plenty of duct tape and paper clips laying around the house..

 

On the roof corner lights - most owners simply seal them up themselves. The foam gasket under the corner lenses does not matter (thats just to keep dust out). Remove the single screw holding the lens on and you will see where the wire goes down through about a 1" rubber plug into the roof.. Odds are you will need to really cleanup the area (if you want the silicone to work). Also the top of the plug, there is an inset area which should also be cleaned out and filled with silicone.

Replacement is expensive and not easy since the wires and plug are one part. You have to pull parts of the headliner down to fully replace that entire part of the wiring harness with the rubber plug. Much easier to just clean it up from up top and be done.

Also the two rear ones are just as prone to leaking as are the 3 smaller center ones at the front and rear. The 3 smaller ones on each end are different on how you can try to seal them. Most just try siliconing all around those too but I think that looks messy so I made new gaskets for those smaller ones.