I am not sure now if my initial post was correct then. I have a 99 NBS ext. cab that the passengers floor front and back are soaked. It is water and not antifreeze. I did find that the rubber seal at the top rear of my third door was pulled away and left a gap in the corner. I tried to push it back up on it, but it doesn't want to hold. So, I put some silicone in the seal and got it to stay up and sealed. I haven't tried to see if it leaks anywhere else. I may need to get the hose out and do more testing. I have my carpet lifted up to help drying. I think I will do some more testing when I get home. As much trouble as I have went thru to get my carpet dry, I will be pissed if it gets soaked again.
