Bad installation. Try some permatex "gasket maker" and re-do it. dave
If it is noisy, leaking or not pumping sufficient coolant to cool the engine, replace it.
If it is leaking. Fluid will be coming from the right side. Remove wheel and plastic cover behind it. look up and forward to see pully. There is a hole in the bottom of the pump. If you see leaking or streak from leaking . replace the pump.
Best to take it to a shop, if it needs charged it's leaking
Most of the time it is because the water pump is going out and it is leaking where the pulley is on the engine.
The drains in my sunroof were clogged and the body shop cleared them out for me, thats why mine was leaking.
Head gasket, timing cover gasket, or hose leaking.
The water pump on the 2000 olds Alero is located on the passenger side where the drive belts are. Water leaking from the water pump entails replacement.
i worked for Saturn and there is a defect with the 2000 Saturn GL's transmission but it is not documented. this year of Saturn should still under warente if not sorry but your SOL it will cost to much to repair at the dealership and that car is not worth it.
your windshield seal has failed
if the water pump is noisy or it is leaking coolant out the relief hole on bottom of pump.
Coolant is pink. You should have your water pump checked.
MY 2000 saturn is a standerd and I get an av of 38mpg