Sudden Antifreeze leak - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-20-2007, 05:17 PM   #1
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Default Sudden Antifreeze leak

So I went to start my 1995 Bonneville SLE today and I figured on checking fluids so i shut her right down in the driveway after a minute...

I open the hood to check the oil see its fine so i look over and my overflow tank is dead empty. I look under the car and theres a small puddle of water, so i start up the car to make sure and sure enough anti-freeze is dripping down at a somewhat nice rate. I have taken a look and it seems to be coming from under the water pump. Everything above the waterpump is dry, but right from beneath it, wet as could be. The one hose I can see of coming into it from the front of the car looks dry and fine...so I'd imagine something directly under or the underside of the waterpump, has the leak.

Does anyone have any idea what this is? How can i get the waterpump off and check?
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Old 01-20-2007, 05:28 PM   #2
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There'* a hole in the lower part of the water pump that will leak when the seal goes. You need a new water pump.
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Old 01-20-2007, 05:31 PM   #3
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Well my friend had told me that exact thing about the hole when the water pump goes after i posted this, now I know he is right lol.

One question...how hard is my water pump to replace, what needs to be done to get it out?
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Old 01-20-2007, 05:34 PM   #4
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Sorry another quick question for you gearheads..


My friend has a garage and will help me, I just have to drive it roughly a mile...is that ok if i top off the levels before I go? (its very cold here and i have no garage to use)
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Old 01-20-2007, 05:36 PM   #5
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It should be fine to drive a short distance after refilling.
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Old 01-20-2007, 05:37 PM   #6
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keep an eye on the gauges, in case the water pump freezes and throws a belt
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Old 01-20-2007, 05:37 PM   #7
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Yep, top off your cooling system, go easy on the gas pedal and try to get to your destination as quick as possible. Ironic what I just said huh?

Take a couple jugs of water with you just in case that 1 mile turns into a 20 minute drive.

Look at this thread I started. It has a bunch of pictures of the 3800 that could help you out when it comes to pulling the water pump out.
http://www.bonnevilleclub.com/forum/...281&highlight=
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Old 01-20-2007, 05:39 PM   #8
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don't forget to pump it down so you dont get air pockets
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Old 01-20-2007, 07:28 PM   #9
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Well in the morning it'* off to my friends and a water pump change it is Thanks a ton guys!!! This club is amazing.
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