Help with a 91 grand prix

I have the 3.1mp.I have a water leak with some copper or metal hoses on the driver side.There is very little water getting to the motor and the leak can be seen with a good flash light.The leak seems to be on one of the fittings.Do anybody know around how much this is going to cost me to replace the metal hose or the fitting???Bud-sc

On your engine, the quick-connect fitting near the t-stat housing erodes internally, then cracks and leaks. The fitting is cheap ($10'ish), but removing the old broken piece from the intake if it snaps off could get expensive if you take it to a shop.