A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.Google+
Car Problem Reports
Oldsmobile Achieva Leaking Water Pump May Cause Coolant Loss and Overheating
Oldsmobile Achieva Problem
Engines Affected: 2.3L 4 Cylinder, 3.1L V6
Visitor, 1998 Oldsmobile Achieva, 3.1L V6, 177,000 mi
Radiator is leaking coolant and I had to bypass the heating core cuz it leaked from the hose there as well, and thats a cheap fix if you dont care to have a working heater. Radiator is leaking from two spots, so will need replacement for sure.