Tonight, after driving a short distance, I have coolant heavily dripping out somewhere on the passenger side of the engine bay. I can't tell where it's coming from as it's dark now, even with a flash light. All I can see is that the entire area seems to be wet/moist. Car is not/ has not been overheating. I only noticed the leak tonight, but have had the check coolant message recently and the coolant was indeed low-I added some. I recently had the rad flushed and filled with Dex Cool- also added Bar's instead of GM "pills/tablets" because I'm not near a GM dealer. I realize that there are several places where it could be leaking, but has anyone had similar experiences with coolant leak issues not related to Head Gasket issues?

thanks