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Pontiac Bonneville Water Leaks

101 messages,  Last post on Nov 21, 2009 at 5:26 PM

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What is this discussion about? Pontiac Bonneville, Sedan


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#30 of 101
Leaky Bonnie by rklus
Jul 14, 2008 (5:22 pm)
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Hi, I have a 2002 Bonneville that is leaking very similarly to those posted here. Water is pooling on the floor behind the driver's seat. No sunroof. Can you also send me the information on possible fixes?
 
Thanks,
 
Rich
#31 of 101
Re: Leaky Bonnie [rklus] by imidazol97
Jul 14, 2008 (6:37 pm)
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Replying to: rklus (Jul 14, 2008 5:22 pm)

Done.
#32 of 101
Bonneville leaking by vapor29
Jul 18, 2008 (4:04 am)
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Hi, looks like I'm having a similar problem. Mine doesn't appear to be from rain though. My 02' Bonne has begun dumping massive amounts of water into the passenger side floor when I run the A/c and make left hand turns. Any help, picture, etc would be appreciated.
#33 of 101
Re: Bonneville leaking [vapor29] by imidazol97
Jul 18, 2008 (4:11 am)
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Replying to: vapor29 (Jul 18, 2008 4:04 am)

Since you don't mention water from the outside like rain, yours sounds like the drain on the AC evaporator is stopped up. Put the car up on blocks or a lift or something solid and crawl under. On the firewall down low you should find a tube that's the drain to the AC box. It will have a flattened end to keep it closed except when water weight inside pushes through.
 
Insert a coat hanger into the bottom end and you'll probably get a gush of stuff coming out that was blocking it.
#34 of 101
Re: Water Issues [imidazol97] by kts0347
Jul 21, 2008 (4:02 pm)
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Replying to: imidazol97 (Oct 25, 2007 4:35 am)

Hi imidazol97,
 
You have given some great advice.
 
I have a 2002 Bonneville with sunroof, and have water leaks under passenger seat and rear floor. I dropped the headliner (it needed to come out anyway for recovering) and blew out the four drain hoses on sunroof. They were all blocked. The two rear tubes exit just in front of the rear wheels and the two front ones appear to dump into the lower door sill and then drain out from there. Now they all run fine except the driver's front side. (I test poured water down the tubes to check) Nothing is coming out, and there is dampness on the emergency brake cable and wiring harness. Another post indicated this tube could be misrouted, but I can't find where the tube is behind the instrument panel. Can you help.
 
Also, I think I have one door inner seal that must be leaking too. Can you send info on that as well.
 
Thanks
#35 of 101
Re: Water issue [steve167] by kts0347
Jul 21, 2008 (4:08 pm)
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Replying to: steve167 (Nov 17, 2007 5:53 am)

Steve,
 
I have a problem with the sun roof drain tube on my driver's side front too. It doesn't seem to be draining to the outside. I blew it out with an airhose, and it is clear - that isn't the problem. I ran water down it as a test, and it disappeared - it just didn't come out the bottom of the car like the other three tubes did when I tested them. I pulled up the carpet partially and found seepage on the parking brake cable and wiring harness. But I didn't find the drain tube. There is a heavy rubber mat under the carpet on the firewall that is held down with pins. Do I have to lift that to find the tube, or how do I determine if the tube is positioned properly?
 
Thanks for the help.
#36 of 101
Re: Water issue [imidazol97] by kts0347
Jul 21, 2008 (4:21 pm)
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Replying to: imidazol97 (Nov 17, 2007 6:05 pm)

Hi imidazol97
I am a newby on the site, and have a number of Pontiac Bonneville water leak issues. I tried to find your picture-rich help guide for drain tube repairs but didn't have any luck. I went to your carspace but didn't see a link to the guide. Help!!
 
Thanks
#37 of 101
water leaking into my trunk on my 05gxp by 05gxp46
Jul 22, 2008 (9:51 am)
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hi out there, has anyone else had water leaking into their trunks? i have an 05 bonneville gxp and every time it rains i get water in the trunk and it pools up in the basin where the spare tire sits.
#38 of 101
Re: Water issue [kts0347] by imidazol97
Jul 22, 2008 (4:40 pm)
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Replying to: kts0347 (Jul 21, 2008 4:21 pm)

Check your carspace email box.
#39 of 101
Re: Water issue [kts0347] by imidazol97
Jul 22, 2008 (6:04 pm)
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Replying to: kts0347 (Jul 21, 2008 4:08 pm)

>heavy rubber mat under the carpet
 
It looks like you have to find the right place to cut a chunk out of that mat to find the place where the tube goes through and out behind the front wheel inside the wheelwell housing.

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