How do you replace a 1990 Oldsmobile Calais starter?

To replace the starter on a 1990 Oldsmobile Calais, first disconnect the negative battery cable for safety. Then, locate the starter beneath the vehicle, usually near the transmission. Remove the mounting bolts and electrical connections from the old starter, then install the new starter by reversing the process. Finally, reconnect the battery and test the new starter to ensure it’s functioning properly.