Replace wheel cylinders and check rear proportioning valves.
The master cylinder contains the reservoir for the brake fluid. This is where you would add it on an 1990 Cutlass Supreme.
Bleed the master cylinder.& then rebleed the system.
It seems that they most problems with the 93' Oldsmobile cutlass supreme would be the engine and the break. Those seem to go out the most on this car.
Sometimes the Cutlass sedan and the Delta 88 would share the same wheel design.
1 or 2 inch lift
The best place to find the brake line schematic for a 1995 Cutlass is at a GM dealer. The repair facility would have all of the relevant manuals.
At the firewall on the passenger side
Hose leaking Water pump leaking
Blown fuse?
sad to say.but i do not know either... i have a 1994 cutlass supreme sl and am looking for the same answer. if you hapen to find the answer. i would appreciate it if you would contact me at jazingg@mail.com thanks
Replace ignition module (under the distributor cap)
just had something similar like this done, they had to replace the wire harness inside steering wheel, because its all electrical. one of my turning signals and left side of brakes and back window light would not work.