How do you change alternator on a 2005 Chevy Malibu?

To change the alternator on a 2005 Chevy Malibu, first disconnect the negative battery cable to ensure safety. Remove the serpentine belt by using a wrench to relieve tension on the tensioner pulley. Unbolt the alternator from its bracket, disconnect the electrical connectors, and carefully remove it. Install the new alternator by reversing these steps, ensuring all connections are secure and the belt is properly tensioned.