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Take off your windshield wipers. (not kidding) Take off that black piece of trim under your windshield wipers (still not kidding) On the passenger side of the car you'll see the flap, this is what opens and closes for the A/C unit. The problem is the gasket they used between that flap and the steel of the car. This piece needs to be removed and cleaned. Below this piece there is a seep hole for water to escape out. I know i had to clean my out it was completely clogged with crap. I also trimed some of the plastic off to not let it get as clogged as fast.
When i went to reinstall the flapper thing i ran a bead of silicone around the housing for the flapper, put it back in and bolted it down. and then used the remaing silicone to COMPLETELY COVER THE EDGE. Tighted the screws back and guess what it's been completely dry on my passenger side for 7 months now. But yes i have the same problem with the drivers side, and from what i have found it is behind the brake pedals, (this summers project) as far as the back seat floor the only thing i can determine is either gasket around the trunk lid. under my back seat, in the spare tire area and my floor get's soaked and i can't figure it out.
Hopefully this helped you out
Chuck
I have water that now accumulates in the back passenger floor well and on the driver's front side only. Sometimes I have 2 inches in the back seat. I dried it all out, (still not knowing for sure where it is coming from), and with the floors perfectly dry, I drove it for about 2 miles, let it sit in front of my office, (not raining) and when I came back out to go home, it looked like a poured a couple gallons of water in it!
My guy and my mechanic that there is a leak where water is getting in and getting trapped. I will pass these replies onto them BUT how do I explain the two different places that ge t wet.. (Front Driver's and back passenger)?
I would love and greatly apppreciate all the help and suggestions that any has to offer.. I love the car, but I hate letting it just sit and not be used.
http://www.edmunds.com/cash-for-clunkers/eligible-vehicles.html
I see they have a 95 Pontaic Grand Prix and I thought Grand Prix were supposed to be a better model than Grand Am. In fact, I don't see any Pontiac Grand Am's on the list?
stlrz00
stlrz00
Open the sunroof and look all the way to the front and in the corners. You should see a pencil sized hole for drainage. This hole leads to a tube that drains down the A-pillar (the front posts on both sides of the windshield) and out between the door hinges (on a 2002 Grand Am). If you see debris in front of the hole clean it out. Now pour about a 1/4 of a cup of water down next to the drain hole and watch for it to come out the hole between the door hinges. Make sure both sides are clear. If it doesn't drain and you can't see any debris try blowing it out with an air hose or use a straw and your mouth if you're desperate.
How would this get the floor wet instead of the seat you ask? Your sunroof is designed to deal with water that gets past the seal. Believe it or not, it is not designed water tight. There is a small drain pan that holds that water until it gets drained. If it goes over the edge it gets into your headliner which has a plastic underlayer and (depending on the angle that your vehicle is parked) it runs out the front corner of the headliner where it is channeled by the A-pillar cover down to the top of the dash. It runs down beside the dash into the floor. If you are parking on a steep incline, I suppose you could get water in a different location.
Hope this helps! Oh, I almost forgot. Check those drains regularly!
I noticed this leaking you all are referring to almost at once.
Today, it was raining and I had already pulled up the rug and padding on the front floor boards the other day. I noticed water running to the front from underneath the front seats through a channel that seemed to be there under them coming from the rear of the car.
I opened up the trunk lid and the passenger front corner of the trunk was wet. At each corner of the upper part where the gasket sits of the trunk lid GM, for some reason, put a channel under the corner of the back window going somewhere. It seemed to me that it was running down the floor board to the front floor board of the car. I caulked it shut and will do a water test tomorrow.
I used the hose with a nozzle to flush out the rocker panels from just inside the front doors in the void going to the front at the bottom. Tons of sand and debris came out. I flushed until clear and water flowed freely out the rocker panels I then spent the next couple of weeks sponging out the wet carpet inside and lo and behold, I have not had water anywhere in the car ever since. The carpet has remained dry and I no longer bother keeping rags in the car.
The fix is easy, spray rust proofing. Just get the area dry and paint it with the rust proofing a few times over several hours to allow the coats to dry and tack up a bit. Spray all the way around the plastic that latches the harness into the body of the car and that will prevent the water from running inside from that location.
BTW these water leaks are a big problem for the airbag module that is under the passengers seat (under the carpet) and the cause the module to fail and typically destroy the harness connector.