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Sedans Pontiac Bonneville Pontiac Bonneville Water Leaks
101 messages, Last post on Nov 21, 2009 at 5:26 PM
You are in the Pontiac Bonneville Forum. Your Hosts are pat & karens
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I found a very detailed posting of how to repair the sunroof drain tubes. The front tubes are the most McGivered devices you can imagine. Instead of being one continuous tube, they are sectioned and joined behind a heavy rubber mat that is pinned to the firewall (underneath the carpet). As soon as you blow out the tubes to clear them, they separate at this section. The only way to access the location where the joint is located, is by cutting an access flap into the heavy rubber mat. The detailed posting with very clear pictures showing how this is done is unfortunately not in this forum. you can find it at (www.pontiacbonnevilleclub.com/forum/viewtopic.php?f=43&t=1688) Study the pics carefully to figure out where to cut the access flaps. On the driver's side, you will have to remove the parking brake. And use a hose clamp so they don't come off again. Agggg! Unhapping ending: Before I found this post, all I knew was that the water was draining behind the heavy rubber mat rather than outside. It was a black box mystery - because you simply can't remove the mat to inspect. And without knowledge or a shop manual you are lost. So, I finally gave up and took my car to the dealer. They charged me 3 hours labor so you know this isn't an easy job and they ended up slicing the mat just like the posting describes. A day later I found this posting with the clear pics. Turns out I had already done most of the work. Another tip. the underside of the carpet is coated with a thick foam material that really sponges up the water. So don't expect that it is going to dry by itself. The best solution is to remove the carpet and sun dry it, reverse side up (per the Pontiac Tech) but what I am trying is to create an airspace by placing some plastic bottles under the carpet and sqeezing the foam like you would wring out a sponge. I figure that with AC on, it will eventually dry if you allow the air to circulate. Also, park on a sloped driveway, with the back end downhill ( keep your rear carpet elevated off the floorboard) Gravity will pull the water toward the back seat floorboard area where you can mop it out. And keep wringing the foam on the back floor carpet. It will get fresh water in it, as it runs down hill. A few days of this will get rid of most of the water. The Pontiac Tech tells me that the carpet doesn't like to naturally wick the water out of the foam to the surface, so don't expect it to just dry out by itself. You will be shocked at how much water wrings out of the foam. It can absorb well over a quart on each side. |
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Replying to: imidazol97 (Jun 03, 2008 5:06 am) |
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| I have a 2002 Pontiac Bonneville, the windows work intermittently and I believe this is due to shorts probably caused by moisture somewhere around one of the wiring harnesses. I'm just not sure where. Took it to the dealer where they evidently replaced a wiring clip so the drivers side window works regularly now. They recommended to replace the other window motors, but I think they are fine. Anyone know where these wires run that might get exposed to water? The posts in this forum seem to support my theory. Any help out there with this? | |
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I finally came up with the perfect solution to the sunroof and door water leaks in my Pontiac. I had searched for days trying to find all the leaks. It got really frustrating. So what I finally ended up doing solved the problem. 1) I removed all the old soggy carpet with the sponges stuck to the underside and threw it away. 2) I then coated the entire floorboard with Rhinocoat. Looks real good, and gives the car a real custom appearance. 3) I re-routed all the sunroof drain tubes through the headliner so they now empty into a bucket that I keep in the back seat. (I am considering switching to beer cans in the rear cup holders for a more professional finish) 4) I have flip flops for all the passengers so they can dangle their toes in the water while we drive. 5) Every so often I toss a couple of shovelfuls of sand onto the floorboards. Makes everyone feel like they are at the beach. Why didn't GM think of this great idea? 
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Replying to: imidazol97 (Jul 22, 2008 4:40 pm) Thanks. |
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Replying to: kts0347 (Jul 21, 2008 4:21 pm)  comcast.net. Thanks.
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Replying to: enalevanko (Aug 26, 2008 4:45 am) |
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Replying to: raelu (Feb 15, 2008 8:12 am) |
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I blew out the sunroof drains with a pressure hose, because they were all blocked. They flowed fine after that. Problem was, they flowed right into the car and trunk, because GM had seen fit to put connections on the hoses where they pass from inside to outside the car. The pressure hose had blown out all four connections. Two are in the trunk - easy to reach, just remove the grey matting on the side of the trunk and they are there right behind the wheel well. Two in front are really difficult. They are on the driver and passenger firewall kick-plate and are behind a heavy, black, un-removable rubber mat. Have to cut access flaps to get to the connection points. See my earlier post for website info. The tale continues. I thought the carpets would just dry out and it would be over. Not so. They smell. So, I have to remove them, and get the mildew out of them. (Living in FL, I will just toss them in the pool. Chlorine works wonders) So I have removed the seats and am struggling with the center console. Need help here. Took out the obvious two bolts at the rear of the console, and now it lifts freely from the rear. But the front is still firmly attached to the IP and I can't find any more attachments to remove. Must be clipped somehow, but I don't want to tug or pull too hard in case I break something. Advice? Thanks
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Replying to: kts0347 (Aug 26, 2008 5:20 pm) 1) Remove Instrument Panel Cluster Bezel Trim. (start with two button clips on underside of upper edge of trim panel, then the rest is just push in clips. Whole bezel right down to the radio cover comes off as one piece. 2) Remove the small trim panel remaining that contains the emergency flasher. (unclip harnesses and pull out and up) 3) Remove four bolts holding console to Dash Panel 4) Lift panel surrounding shift lever and rotate 90 degrees for access. Take care with clips here, fragile. 5) Unclip main harness connection 6) Unclip Shift lever cable (slip on fitting) and remove from retainer 7) Unclip Shift Lockout lever cable (remove yellow retaining cap and disconnect) and remove from retainer. 8) Remove two bolts holding console to floor near rear of console 9) Lift back and up. Route harnerss and cables through front opening. This presumes you have already removed the seats. To remove bucket seats you need a star socket. I bought one as part of a three piece brake caliper removal kit for $2.99 at Harbor Freight. Four star bolts hold seats in position. Tilt seats backward and disconnect power seat harnesses. Remove through back door. Carpets now lift out freely. Mine are going into the pool with an extra dose of clorine to clear them of the mildew. While I have them out, I am going to finish reconnecting the front drain tubes (as per the web page above) and also do the door trim resealing as I have leaks there as well. Then everything goes back together (hopefully).
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