Question about 1999 Chevrolet Silverado 1500

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GURGLING SOUND FROM DASH DURING ACCELERATION - 1999 Chevrolet Silverado 1500

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Hi, I had that problem with my 01 gmc. heater core was partially blocked, so when you accelerate the water flows faster through the core. I flushed my core out with viniger and my heat was better and the sound went away, but I had to change the core about two years later because it started to leak.

Posted on Aug 25, 2010

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My 1999 buick century started making this squealing sound when ever i hit he gas, but stops when i break, what could it be? also, when i push on the gas pedal, i hear this water gurgling type sound co


the sound is from loose belts ( poor condition belts) that slip from the acceleration. Check power steering belt, ac belt and generator drive belts of if one belt check condition and tension.

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2005'Towncar. 40k miles. Started making an odd sound on acceleration; hard to describe but sounds like it is coming from passenger dash side. Maybe an air noise?? No sound on very soft acceleration


Turn off heater/air conditioner and accelerate briskly. If noise does not occur problem is probably a regulator in the heater/air conditioning system located under the dash.

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Perhaps there is an air lock in the heater core. Just a guess, but if you purge the air, it may solve your problem. I hope this helps.

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Depends.
It could be water trapped inside the heater box, or air in the cooling system. If the sound happens when you take off from a stop, it could be low on coolant. If it happens when you are making a turn, it could be water in the heater box. The drain could be plugged up.

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That is an interesting question. I experienced this once with a 1995 Taurus and it would sound like the ocean behind the dash on turns. It was a leaking radiator that caused air to get in the system as it leaked. I have also seen the drain plugs clogged for the air box during the summer that collected water due to condensation from the evaporator.

Check the coolant reservoir to see if it is at the correct level and also make sure the air box drain(s) is clear of debris. Although, if the air box is that full with liquid, it usually starts to poor out on the passenger floor so that would give you a better idea of what is happening if that is the case. I hope this gives you some Ideas of how to approach the problem.

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I have an 04 Ram and have heard the same sound. Mine is actually refrigerant gurgling when I have had it on defrost. When defrost is used the air conditioning compressor cycles. They do this so oil will be circulated through the compressor during winter months. Keeps the clutch and everything working and keeps seals from drying out.

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I get a gurgling sound coming from behind the dash


Does the sound stop after a minute or two? IF so, this is normal. When the a/c is working, there is high pressure on one side of the expansion valve, and low pressure on the other. When you turn the a/c off, the pressures equalize. That's the noise you are hearing.

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Gets warm not hot after some time.


That sound you hear is the heater core, and the air passing through it. Either the air is trapped by a clogged heater core, or its sucking air from a leak at, or on the heater core.

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Check the water coolant level because some of the hot water goes into the heater radiator behind the dash. Seems you have air in the system.

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