We are trying to find out if my 1997 buick le sabre has an oil pan sensor or oil pressure sensor and where it is located at so that we can change out the oil pan

All car well have a oil pressure sensor, the oil pressure sensor is what lets you know, you have good oil pressure, if light comes on low oil pressure, need to turn off engine before major engine damage occurs, the oil pressure switch will be next to the oil filter, screw into the engine block, your car also has a oil pan sensor, called oil level sensor, that one screw into the side of the oil pan, it let you know when your some what low on oil.