How do you replace starter on 2003 Oldsmobile alero?

To replace the starter on a 2003 Oldsmobile Alero, first disconnect the negative battery cable to ensure safety. Remove any components obstructing access to the starter, such as the air intake duct or battery tray if necessary. Then, unbolt the starter from its mount, disconnect the wiring harness, and remove it from the vehicle. Install the new starter by reversing the process, ensuring all connections are secure and finally reconnect the battery.