Cooling System Problems - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-30-2006, 01:21 AM   #1
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Default Cooling System Problems

I have a 1994 Bonneville with only 53,000 miles. It is losing coolant and no one cane seem to find out where it is going. It'* not on the ground or in the oil and a thorough inspection seems to to show no signs of leaking. Anyone have any thoughts?
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Old 06-30-2006, 01:24 AM   #2
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Overflow tank? Is it full to the top?

by the way - please post your car'* model (se, sse, ssei) and year in you signature.
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Old 06-30-2006, 01:27 AM   #3
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Default Cooling System Problems

The tank is where I notice the coolant missing from. Also the car does not seem to run hot.
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Old 06-30-2006, 01:31 AM   #4
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Default Cooling System Problems

The car is a 1994 Bonneville LE
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Old 06-30-2006, 01:32 AM   #5
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Default Re: Cooling System Problems

Quote:
Originally Posted by dgfpbhs77
The car is a 1994 Bonneville LE
no such thing.. lets assume its an SE
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Old 06-30-2006, 01:35 AM   #6
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Default Cooling System Problems

You're correct it is an SE pardon my mistake. [/b]
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Old 06-30-2006, 02:12 AM   #7
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i say intake manifold gaskets.
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Old 06-30-2006, 06:36 AM   #8
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Default Cooling System Problems

Wouldn't that show up as coolant in the oil and make the oil milky looking? If so the oil looks fine.
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Old 06-30-2006, 10:52 AM   #9
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About how much does it seem your losing roughly.
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Old 06-30-2006, 10:58 AM   #10
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Have you had an oil analysis completed?
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