Sloshing sound when you make a hard left turn. It sounds like tires going through water

It sounds like a leaking heater core. If your radiator level keeps loosing fluid? that will confirm this as the problem. The "Warm water" is engine coolant and is simply getting caught up in the lower dash board sloshing around as you turn
You probably need to replace the heater core . It is what gives you heat inside the car from the engine. Another symptom would be no heat inside the car caused by low fluid level. Driving too long like this WILL cause serious engine damage.

Sound of sloshing water coming from behind dashboard - GM Inside ...

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Nov 16, 2008 - 11 posts - ‎9 authors
Hey guys, I have a 1999 Olds Intrigue (3.8) with 137000 miles. ... However, the sound goes away completely as the car starts to warm up (after about 10 .... If you hear thesloshing on the drivers side of the dash, it is not the lack of coolent. ... Your heater core is leaking (passenger side sloshing, low coolant).

what the heck? Where's this water noise coming from??? - Car ...

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It sounds like water is sloshing around towards the engine compartment. ... is gurgling behind my dash. i figure as long as nothing goes wrong, i can just turn my stereo up louder to cover it up. ... I had the same problem on my Oldsmobile Bravada.... This may only happen when the vehicle is low on coolant due to draining ...Missing: 97

Sloshing sound behind dashboard - Discussion on Topix

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is your spare tyre located under the trunk carpet ? if so i expect that the tyre well is filled with water , has the accident damage been repaired yet ? if not then thats how water is getting in so get the repair done , if has been repaired take back to the repairer , the usual place after a repair to leak is where the rear bumper/fender is bolted to the body , these bolts need sealing as they are when vehicle is manufactured

water in your trunk maybe in the spare tire area

sounds like you have a bad wheel bearing, does sound change going around curves ?

sound like a bad heater core! the heater core is like a small radiator that is usually locaded in the dashboard on the passenger side. now if the leaking is really bad you are going to see water dripping by the front passenger tire or if it gets really bad it may leak inside the car. in order to fix this problem the HEATER CORE must be replaced. good luck

This is usually a sound generated from a failing heater core...since you have heat, and no apparent external leaks, you may just want to continue to observe...Hope this helps.

Look around the firewall for flaps or holes that are blocked at the bottom.

Rain water or wash water accumulates in the body and sloshes around.

Debris can block the drainage holes, just like in a gutter.

Good luck to you on this one.

you can find fuel filters near fuel tank under car or close to the carberator under bonnet. Sometimes the easy way to find is to start where fuel enters engine and carefully follow it backwards.Hope this helps.Good luck.

if you can hear the slosh. it probily in the cab. need to check you drain tube for the AC unit under the dash