1999 Pontiac Montana Logo
Posted on Apr 27, 2009
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Sounds like water in my dashboard

Everytime i get in my car and take off it sounds like a bunch of water swishing back and forth and i think my a/c line is not draining it may be backing up in my dashboard where do i find this line to see if there's a blockage?

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  • Posted on Apr 27, 2009
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It's the coolant in the heater core that your hearing,so you probably have some air in the cooling system.

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In regards to the swishing water. Had the same problem on my 99 Jimmy. Reason for the problem was air pockets due to low coolant level in my rad and any empty reserve tank. Drained rad and refilled till absolutlely full. Filled reserve tank to proper level and waited for thermostat to open and **** in coolant, level goes down. Top it up and repeat till rad level stays full and no air will be present. Bybe bye to swishing water sound. Hope this helps.

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