2001 Saturn SC Dry radiator

radiator is dry and does keep water. no sign of leak.

The coolant is going somewhere.

Well which is it, dry or does keep water?

If you are loosing coolant and no obvious leak, check your oil dip stick and oil cap for a milky residue. Sure sign of a breached head gasket. The coolant is going out the tail pipe.

bad head gasket or a thirsty rodent.