Hi badboy101178. Welcome to the forum. If you're referring to the passenger side, the heater core is buried way back there. Good luck reaching it. The tubes are plastic so don't put too much pressure on them. One of those hoses could be leaking, especially if it is a fairly fast leak.
Slower leaks or leaks that only occur when the engine is warm may require a pressure tester to make it show up. A head gasket can leak coolant into the oil or out the side of the engine but that isn't real likely for a two year old gasket.
Also look for a metal tube running along the rear edge of the rear valve cover It could have a hole corroded through it, especially near the metal mounting tab that is welded onto it.
Friday, July 2nd, 2010 AT 6:41 PM