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It's very possibly a function of condensation. Check for multiple evaporators. If there is more than one in your Riveria, the second will be somewhere in the area where you are getting the water. If that's the cause, clear the condensate drain and that should clear the problem. This is a very interesting question. I have a 1995 Riviera, in excellent condition, and noticed water beneath the passenger seat and also on the carpet directly behind the seat. After soaking up the water and drying it out thoroughly, I went through a car wash the other day and as the water was spraying underneather the vehicle, immediately I felt the carpet under the passenger seat becoming very wet. I assumed that the water was getting in somewhere under the passenger seat but after the car was put up on a hoist, the meachanic couldn't see where the water was getting into the car under the passenger seat. He has suggested removing the passenger seat and lifting the carpet to see where it might be getting in. He said there are two seals located under the seat with caulking around them and he can only figure that the caulking has let go. However you are relating this problem to the A/C and now have me thinking. Do you think it has to do with the car wash pressures pushing its' way in under the passenger seat or are you thinking that it has to do with the A/C?

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โˆ™ 2009-08-25 02:37:32
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Q: When you run the AC in your 1995 Buick Riviera your back floorboard behind the passenger seat gets wet what is causing the leak and how to fix it?
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