[madmaxx]

my guess is it where your water pump bolts to the block. Notorious for leaking there. See if it is not damp in the little valley on the driver side adjacent to where the pump bolts to the block. If it is there the best solution is to add some bars leak to the cooling system, half a bottle is fine and the leak will be forever gone. You could replace the gasket but more than likely it will rear its ugly head. GM, Ford, Chrystel all instruct to add leak sealant anytime the system is flushed to catch these nuisance leak.