Where is oil pressure sensor on a 2001 buick century

SOURCE: Where is the fuel filter located for Buick Century 2001

The fuel filter is located underneath the car in front of the gas tank.
You have release the fuel pressure. Remove the fuel filler cap, locate the fuel test port on the fuel rail on the passenger side on the end of the right real fuel rail for a 3.1L engine.
3.8L engine yhr test port is located at the pressure regulator under the trim cover.

SOURCE: how to replace a coolant level sensor, 2000 buick century

TRY THIS. Good luck!

SOURCE: how to replace a coolant level sensor, 2000 buick century

The coolant level sensor is located on the radiator. If you are looking at the engine from the front of the car it will be on the left side. There will some kind of clip holding it in the radiator. Removed the clip and pull the sensor out. You will lose coolant so try to swap it out quick or drain some of the coolant out. Once new sensor is installed, install clip to keep the sensor in place and reconnect the wires to the sensor. Crank the engine and make sure the coolant level is full. This should correct your problem.

SOURCE: 2001 Buick Century shift solenoid

It is in the side cover on the valve body. The transmission needs to be removed to access the solenoids.

SOURCE: how to replace the fuel sensor on a 2001 buick

If you mean the fuel level sender for the gauge it is part of the fuel pump module inside of the fuel tank. If you mean the fuel tank pressure sensor for the EVAP emission system it is located on top of the fuel pump module on the outside/top of the tank. If you have an erratic fuel gauge then the sender is most likely at fault. Some are serviced seperately but some are sold only as part of the pump. If you have to remove the tank and pump to replace the sender and have close to 100k on the odometer then I would STRONGLY suggest replacing the fuel pump at that time.