[Ridenour]

It sounds like it could be the infamous LIM (lower intake manifold) gasket leak. That would be my first guess. Where specifically is it leaking? Is it under the throttle body? If it's under the throttle body area or on the belt side of the engine, it could very well be the LIM. Check your oil - make sure it isn't milky in color - if it is it's a sure sign that coolant is mixing with it - and in due time it will eat through your bearings on your motor - which will suck. But hopefully it will only be an external LIM leak. If you look where the heads meet the engine block sides down near the bottom and see some coolant marks running down, those are most likely coming from your shot LIM. If you're not sure what to look for, take it into a shop and have them check it out. The original LIM gaskets were plastic and were melting - the new ones won't melt. A shop would be able to replace your gasket for anywhere from 400 to 700 dollars. You could do it yourself for about 100 dollars. It's a several day fix if you can do it yourself - it's quite an undertaking if you haven't torn into your engine before.