When I purchased my GX there was water in the back as you describe. I thought it was just from the yahoo's at the stealership just leaving one of the back windows open or being lazy with the carpet shampoo machine. I tore the back apart including removing the weather stripping around the rear door. I found that a lot of water in the weather stripping along the bottom of the door/hatch area. There was some rust forming down there also.
I checked on it again after the next big rain and while there was no water in the cargo area, the weather stripping was again holding water at the bottom. I cleaned it up and used some weather stripping sealant to try and eliminate the issue, as I "thought" maybe as the water was working its way down from the roof around the weather stripping, it was finding its way in. I didn't have enough to go all the way around the entire area, just the top portion and down each side, but am still seeing water in there.
I will be pulling the carpet and leaving everything out, then have my wife drive through the carwash while I scope things out in the back. I know certain companies make weather stripping conditioner, and I want to get a hold of that for the side windows.
I checked on it again after the next big rain and while there was no water in the cargo area, the weather stripping was again holding water at the bottom. I cleaned it up and used some weather stripping sealant to try and eliminate the issue, as I "thought" maybe as the water was working its way down from the roof around the weather stripping, it was finding its way in. I didn't have enough to go all the way around the entire area, just the top portion and down each side, but am still seeing water in there.
I will be pulling the carpet and leaving everything out, then have my wife drive through the carwash while I scope things out in the back. I know certain companies make weather stripping conditioner, and I want to get a hold of that for the side windows.