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.

water leaks from under dash

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Old Oct 25, 2009 | 10:40 PM
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Default water leaks from under dash

I have a 1999 SE. No sunroof. I have cleaned and sealed the door seals and roof channel. Patched the holes in the passenger side rear wheel well.

I now have moved to the front of the vehicle and have leaks in the following places under the dash: above the gas pedal, right front corner and left front corner. If I run water on the black plastic under wipers near the windshield I get water in. Applying water around rest of windshield doesn't seem to be a problem.

Any help you can give would be greatly appreciated.

Jill
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Old Oct 25, 2009 | 10:44 PM
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Sounds like your EVAP drain is plugged. Take a look here, it should help.

https://www.gmforum.com/t278997/
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Old Oct 25, 2009 | 11:02 PM
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What is a EVAP drain and where do I find it?
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Old Oct 25, 2009 | 11:05 PM
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Sorry in hurry and didn't see link.
Thanks I will try that.
Jill
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Old Oct 25, 2009 | 11:08 PM
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The drain is explained a bit just past the half way point of the write up.
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