How to change starter 2005 Cadillac STS?

To change the starter on a 2005 Cadillac STS, first, disconnect the negative battery cable to ensure safety. Remove any components obstructing access to the starter, such as the air intake duct. Unbolt the starter from its mounting location, disconnect the electrical connections, and then install the new starter by reversing the removal steps. Finally, reconnect the battery and test the new starter to ensure proper functionality.