I had a similar problem with my Bonneville few years ago. The problem was
attributed to a damage (piched) drain tube along the passenger side just
above my dashboard during assembly of the interior trim. I was able to
locate the damage and repair it myself. What I did was to plug one drain
hole at the time with RTV. Since the drain hole is small (one or two drain
hole depending what you are trying to do), so controlling the amount of
water is critical not to poor too much water as it could over flow and you
will have a mess to deal with later. It is a time consuming process so take
your time by shifting the car parking angle to faciliate the water flow.
Once you locate your source of the problem, you will have to pull the
interior trim out and replace or repair it. Since you have a 2000 model, I
would bring it back to dealer.
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"David McDougall" wrote in message
> I have a 2000 Grand Prix GT that is accumulating water inside the dome
> light. I think it is tracking from the sunroof, but when checked by the
> mechanic at dealership, I am told there is no sign of any water leaks.
> anyone else had this kind of problem?
> >> Stay informed about: 2000 Grand Prix GT Sunroof leak