Question about 1999 Chevrolet Express

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There are two hoses on the radiator overflow tank one connects to the top of the radiator , but i have no idea wher the other one goes

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On my car and truck,, they are overflow,,meaning they come out of overflow tank and drain to the ground in case of "overflow{

Posted on Feb 05, 2013

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All vehicles have a closed cooling system so that the coolant that goes into the overflow can redirect back into the engine not onto the ground like Ray suggested in his answer.

Posted on Aug 20, 2019

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1999 chevy express van.I have two hoses that run off of my reserve tank one of the goes to the radiator. and another hose that looks like it goes on the acumlator


From the reserve tank, one hose should go to the radiator and the other should be for overflow. Sometimes that one goes to an accumulator, sometimes its left dangling cause its just there to drain any excess fluid from expansion in a hot system. Depends on the vehicle. If its in an enclosed system or plugged you would get an excess of back pressure which would further heat up the coolant and inhibit flow. Just leave it there. If it pukes coolant when hot then its doing its job. Don't overflow your reserve tank.

Apr 26, 2016 | Cars & Trucks

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Where do I fill coolant?


Generally now there is a plastic overflow tank, where you do this, and not into the radiator top neck. The cap there is usually not meant to be routinely removed. There will be a hose about 1/2" diameter from the side of the radiator top neck to the overflow/filler tank. Just follow that.

http://pad1.whstatic.com/images/thumb/6/6b/Fill-a-Radiator-Overflow-Tank-Step-1.jpg/670px-Fill-a-Radiator-Overflow-Tank-Step-1.jpg

Oct 05, 2014 | Cars & Trucks

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I am diagnosing overheating and power steering issues on my 2005 KIA Sedona. So far, I have done well by using this site to properly diagnose both issues, however, I'm stuck on one minor detail. I don't...


There are 2 tanks on a radiator. One on top and one at the bottom. They are what seal the top and bottom of the radiator core. You will also find an overflow tank connected by a small hose near the radiator cap that connects to the overflow tank. The overflow tank is where you top up the coolant. One some coolant system, the overflow tank is pressurised and the "radiator" pressure cap is on the overflow tank, on others the radiator pressure cap is on the radiator and the overflow tank is unpressurised.

Aug 26, 2017 | 2004 Kia Sedona

1 Answer

Where is the thermostat on the 2007 chevy impala lt. Not at the end of radiator hose


On this engine it isnt on the radiator hose it is on the hose that goes from the overflow bottle to the coolant housing. follow the tank to the block . you will need to drain the overflow bottle to remove this hose without making a mess.The thermostat is located in a hausing wher the hose bolts to the block.

Sep 15, 2012 | Cars & Trucks

1 Answer

How do you hookup the hose from overflow tank to moto


The hose from the overflow tank goes to the radiator at top just below cap

May 02, 2011 | 2001 Oldsmobile Intrigue

1 Answer

Do you have a diagram of the radiator cap, overflow hose, and tank seal


Unfortunately there is no specific diagram for this but your radiator cap is right on the top of the radiator closest to the front bumper, the overflow hose will also be connected to the cap or very close to it. You should see it go from there to the radiator fluid reservoir. The tank seal is located inside your radiator cap, this is what makes it from coming out of the cap. The other seals are welded into the actual radiator. Hope this gave you a good idea of what you were looking for!


Have a good one!

Feb 22, 2011 | 2004 Kia Sorento

1 Answer

I have a 2002 jeep grand cherokee and am having coolant problems. Every say 2 weeks or so, the coolant low level warning will come on and the overflow tank will be empty. radiator is still full though...


The hose is an over flow drain. If you've seen no signs of leaks then most likely your radiator cap is bad. The cap helps to pressurize the cooling system, if it is bad it allows to much coolant out to the over flow tank and the extra is dumped while your driving. When you turn off your engine the fluid is drawn back into the radiator and your coolant mysteriously disappears.

Jun 26, 2010 | 2002 Jeep Grand Cherokee

2 Answers

Just added coolant to reservoir 1 hose back into


That will be your over float goes no where but down, there should be another hose that goes to the radiator.

Dec 28, 2009 | 2001 Mitsubishi Galant

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