I'm not a mechanic, but I own a 98 Lumina that had this problem. The water pump is towards the front, so that's not likely to be the problem. The mechanic that repaired mine said there is a seal at the bottom rear (closer to passenger side) of the engine that wore out and he replaced it for me. After that, I haven't had any problems with it leaking.
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Friday, January 8th, 2010 AT 6:27 PM