93 Grand am leaking water into the front passenger area, drivers area, both back seat areas on the floor

I've got a Grandam that I've been working on that leaks rain water onto the floors. I took the heater core area apart today in hopes that it was just a plugged drain but no luck there. And actually there was very little water in that area compared to the serveral gallons on the floor that was vacuumed up with a shop vac. While apart I can see that it is wetter on the insulation next to the firewall than anywhere else and it appears that the water is coming from somewhere near the base of the windshield but not sure where. Does anyone here have any ideas ? It looks like it's been doing it for quite a while as everything is pretty damp and it never dries out.

Let me know... Thanks, Steve m...

Reply to
Steve m...
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Heh, at least you noticed your leak. My 93 leaks and because of the way I park facing uphill a little, I didn't realize it until the rug was growing all sorts of nasty stuff underneath and started to stink. I'm currently driving around with no rug or sound insulation (it's a bit noisier without it but smells better). :) I would recommend removing the rain tray and ensuring that all the leaves/nuts/etc are cleared out of the drainage areas. Also, on mine, the rubber grommet where the wires for the alarm siren pass through the firewall was letting water in. I have recently put some silicon sealer on it and the leak is much less now. The next step is to check the door seals for leaks and also see if it's getting through the water barrier behind the door panels.

HTH, Chris

Reply to
Chris Z.

"Chris Z." wrote

I should add that the rug will pull water from one side of the floor to the other making it hard to tell which side the leak is on. Also, there are channels in the floor which run front to back which make it hard to tell if the leak is in the front or rear.

Chris

Reply to
Chris Z.

It may be coming in the cowl area - typical Grand Am leak place. Water is supposed to go OVER the cover, not under the cover. Does it also have water in the glove box? Remove cowl, clean & check both cowl drains, silicone around the air intake. When you put the cowl cover back on, black silicone the entire windshield edge of it. Seal it to the windshield.

Reply to
« Paul »

As a matter of fact there is water in the Glovebox ! Not a lot but enough to wonder where it came from . I have already taken the cowl off (along with the hood for ease of access) and the dealer (or scammer as a lot call them, me included) "sealed" up the area some (they did a lousy job of course) and that was supposed to fix it. But alas it still leaks. I like you ideas. It's coming in from the front somewhere. I'm sure of that now. Especially if they have a history of leaks. As for the leaves etc... I didn't see any in there when I had it apart. Was clean in there. Those cowl drains are the flapper things on the left and right side. One is under the blower asm. and the other by the wiper motor. Both looked good and worked correctly when hosing it down with water there. Ah, over the cover. I don't think it's doing that currently. It all pouring inside and making a flood. I'll have to work on that area. The other thing is that the cowl is actually cracked. It has 3 bad cracks that go the whole length. That probably isn't helping to keep water out. I'll have to black seal that as well. And the air intake looked good but I didn't check it closely at the base. Maybe the water is just pouring in there as well. Thanks for the ideas.

Steve m...

Reply to
Steve m...

The cowl cover on mine is patched together with bits of plastic, super glue, and silicone. The dealer wants nearly $200 for a new one. Old ones aren't much better then the one I have.

Reply to
« Paul »

What a bummer. I have the same problem but I can't see or get an arm under my cowl. Body shop told me to jack opposite side of car up very high and pour loads of hot tar in cowl area. Also told me to check where wipers attach to body as these areas have been known to leak and could drip water directly into the stovepipe. Sealed the heck out of those and still have leak. Good luck. Al

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snelln2

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