If your engine is like mine, a 3.1, you should see a red handled dipstick near the firewall in the shape of a "T". I think it is marked "Transmission". Easiest to access while standing at the driver's fender. You pour Transmission Fluid in the tube once you've removed the dipstick. You should have the proper funnel with a small spout for the 5/8" tube for allowing the fluid to enter the tube where the fluid dipstick is housed. Be sure the car is level and engine warm and idling in Park. Also, be sure to have shifted the transmission through all the gears before checking fluid level. Add slight amounts and keep checking to avoid overfilling past the full mark. An owner's manual or service manual would help you. Try your local library.
In the transmission in front of the modulator
Dextron IIE or III
A 1992 Oldsmobile may not shift out of park because the transmission is stuck. Check to transmission fluid to ensure it is at the proper level.
on the car
The 1992 Oldsmobile Cutlass supreme has two oxygen sensors. Both oxygen sensors are located on the outside of the air cleaner housing.
The Kelley Blue book on a 1992 Oldsmobile Cutlass Ciera ranges from $1825 - $2175.
5x115
It is inside the fuel tank.
In the tank
turn signal flasher
To reset the computer on a 1992 Oldsmobile Cutlass Supreme, unhook the battery for about five minutes. Then reconnect the battery. If this does not work, look for the reset button on the computer and manually reset it.
Sometimes the flasher relay on a 1992 Oldsmobile Cutlass Ciera is located in the fuse box. Other times it may be located under the dash near the steering column.