If you have the 2.4 engine, it might be the water outlet. It's located on the drivers side at the end of the head, behind the power steering pump. It's made of plastic and has an o ring inside. When mine broke, it left no puddles. The only way I found it was I had removed the large metal plate that covers the spark plugs to check them and noticed a puddle near the plugs. I squeezed the large hose and coolant gushed out. It had broken on the inside, out of view and coolant was leaking past the gasket. If that's the problem, spend the extra money and get the part from a GM dealer, about $42. I bought a part from Auto Zone and it lasted 5 months.
If you look under the water pump, you'll see a hole in the housing. If the pump is bad, water will leak from there also. If your heater core is bad, coolant will leak out thru your a/c hose on the firewall. Both problems are a pain.
Probably the easiest way to locate the leak is add water, start it up and let it idle at park until you see a leak, them trace it back. Watch that it doesn't overheat. A puddle might not appear for hours after shutting the car off.
Saturday, December 8th, 2007 AT 9:37 PM