I own a 2008 CTS and I just noticed that in the front passenger floor mat, there was a lot of water and I dont seem to locate where the leak should be because once I saw it was dripping water from a conduct at the right from the AC vent for the feet. Next time I noticed that there was a little "stream" of water in the door side of the interior and I dont know where to look for the leak. The same happens for the rear passenger floor mat, it seems that the water streams down from the side of the door right from under the roof, so I dont know if it is something from the sunroof or from the door rubbers that seal the car. Please advise on anything you should know about it. Thanks
Front passenger floor mat leak and filled with water, same for back floor mats. on 2008 Cadillac CTS
by zackramm in Houston, TX on July 03, 2011
ANSWER by Visitor , July 04, 2011
it is generally a leak from a/c system condensation forms in the case, there must be a leak in the case.
ANSWER by GigaWatts , August 18, 2015
Do you have a sunroof? I saw the same kind of leakage, and found the same kind of "stream" down the door. Turns out that it was actually from the column between the windshield and the passenger door. That is where the drain for the sunroof is. Within that drain is a small hose/pipe that goes down the frame and out the bottom of the passenger door outside. If this pipe comes loose, it will drain directly into the column, fill it with water, and in turn drip into your car. It only happens when it rains or during a car wash. I haven't gotten it fixed yet, because I'm afraid of the cost.