Most modern vehicles us R-134a refrigerant. If it's used in my '96 Caravan, should be no different in an '01 model.
**There should also be a sticker underneath the hood letting you know the refrigerant specification**
R134A
r134a froen
R-134a
R134aR134a
refrigerant R 134a
R134a
R-134
5W30
Yes
All Vehicles produced Post-1993 are required to utilize Refrigerant R134a.
The only refrigerant you can legally use in your 2001 Saturn would be the 134-A
R-134A. DuPont was the originator of this refrigerant (not Freon) and they called it Suva 134A.