You can remove the throttle body. It is then so much easier to get to the bolts for the thermostat housing.
Remove the airbox and look underneath.
remove the glove box insert. a fuse panel is located there
According to http://consumerguideauto.howstuffworks.com/1990-to-1997-oldsmobile-cutlass-supreme-4.htm, the fuel capacity for the 1994 Cutlass Supreme is 16.5 gallons. Many years ago I owned a 1968 Cutlass Supreme convertible--a very fun car.
There were a reported 8,638 Olds Cutlass Supreme convertibles sold in 1994
Look behind the glovebox.
"What is the firing order on an 1994 Oldsmobile cutlass supreme 3.4L engine?"
Bottom of radiator. If it has none then remove the lower radiator hose to drain the radiator.
The oil sending unit on the 1994 Oldsmobile Cutlass Supreme is located on the top of the engine compartment. It is directly above the oil filter.
First you remove the lower back seat, and the bolts that secure the upper will be exposed. Remove them and lift out upper back seat.
Mounted at the top of the starter