Yes. All automatic transmissions have a hydraulic pump to engage the gears. Saturns are no different in that regard.
Check
Yes
== == In the fuel tank.
Check saturnfans.com forums under the SL or post the question.
See saturnfans.com
Inside the transmssion
They are usually located down on the side of the transmission.
Which motor do you have SOHC or DOHC?
There is none.
Under the battery tray
If it is an automatic, it goes down the red dipstick tube.
No You have to drop the tank have fun