96 Bonneville leaking - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-04-2010, 02:49 PM   #1
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Default 96 Bonneville leaking

Hello and happy easter to all forum readers and administrators......

I have a 96 bonneville and it is leaking coolant. yesterday, I crawled up underneath of it, took the plastic splash pan off of it, took a look around underneath and could not find where it is leaking. Can someone tell me if they have ever had this problem. and maybe where I could look to find this pestering leak??????
I looked around the water pump, and all the other areas that have pulleys on them...
Hope what I have described is an easy fix., or someone can help me out with this.
Thanks alot to all.....
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Old 04-04-2010, 03:04 PM   #2
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Check the coolant elbow above the water pump.
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Old 04-04-2010, 09:47 PM   #3
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Is that coolant elbow rubber, or is it part of the water pump?
And if I was to put a pressure test on the system, How much pressure do I put into the system?
Thanks, cause it is getting expensive and I have got a big ole mess in the driveway.

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Old 04-04-2010, 09:51 PM   #4
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The elbow is plastic and cost about $5 at autozone. I can't remember the pressure off hand, I think it'* like 11 or 14 pounds. You should be able to rent on at AZ and they will tell you the correct amount. It should also say on the radiator cap.
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Old 04-05-2010, 09:06 AM   #5
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Please give us more information.

"I took off the splash shield and looked up."
This only puts us in the area of the motor. How much does it leak, what area is it seeming to leak from? These are the things that will help us to help you.
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