Question about 2004 Pontiac Grand Prix

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Water sound inside 2004 grand prix

I hear water running circulating under the dash when I start the car. There is no water in the floor..

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This sound you hear is your cooant going to your heater core. Check your coolant level , radiator cap and thermostat. one of these mught be on its way out. If you have no problems with your heat or a/c then flush your radiator and don,t worry about anything. I hope this helps. Don,t forget to rate my answer, thanks

Posted on Feb 27, 2009

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Hello,
If you can smell a little bit of a sweet smell from the water on the passenger side floor, or if it has an oily film to it, you may have a leaking heater core.

They usually leak on the passenger side floor, and that might explain why you hear water sloshing around.

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I hope this helps you.

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