How do you replace the crank sensor on a 1989 Buick Reatta 3800 engine?

To replace the crank sensor on a 1989 Buick Reatta with a 3800 engine, first, disconnect the negative battery cable to ensure safety. Locate the crankshaft position sensor, which is typically found near the crankshaft pulley. Remove the sensor's electrical connector and unscrew the mounting bolt to take it out. Install the new sensor by reversing the process, ensuring that it is securely fastened and the connector is properly attached before reconnecting the battery.