You will find this label on the rear edge of the driver's side rear door. It is very helpful if you ever need to order parts. On this label, you will find the following:

Be sure that this label is not removed from the vehicle.

Not all air conditioning refrigerants are the same. If the air conditioning system in your vehicle needs refrigerant, be sure the proper refrigerants is used. If you're not sure, ask your Saturn retailer.