1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Noticed a wet spot on the driver's floorboard....

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Old 01-07-2008 | 03:13 PM
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There are lots of places the leak could be coming from. Almost all, probably all of them are discussed in Jr'3800 super duper water leak thread (almost 7500 views!) I'll go search water leak keyword and Jr's3800 author and see what I find.....

http://www.bonnevilleclub.com/forum/...ght=water+leak

If you take the time to read through that thread, you will almost surely find the cause of your leak.
Old 01-07-2008 | 03:43 PM
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Check if there are any cracks in the plastic rain drainage trim, located at the roofs edge. Water gets thru those cracks and runs inside the inner channel of the door moldings.
Old 01-07-2008 | 06:37 PM
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And from there, wicks down to the carpet padding at the forward end or trailing end of the sill.
Old 01-07-2008 | 07:04 PM
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Originally Posted by reb
Check if there are any cracks in the plastic rain drainage trim, located at the roofs edge. Water gets thru those cracks and runs inside the inner channel of the door moldings.
There are no cracks there either..
Old 01-07-2008 | 07:22 PM
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Originally Posted by harofreak00
Originally Posted by harofreak00
it is probably your door seals. they shrink and cause gaps and what not.

remove the seal completely, and then reinstall it starting from the top, with the seam at the bottom. I bet you will have a couple inch gap. you can either fill it with silicon, or just get new seals
Old 01-07-2008 | 07:58 PM
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My car was also leaking at the seams on the floor board/firwall/inner fender junction. Pull up the carpet and see if the pinkish hard putty has cracks. If so, get some water proof marine epoxy and brush a fairly thick coating down.
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