How do you replace the alternator on a 1990 Pontiac Grand Prix?

To replace the alternator on a 1990 Pontiac Grand Prix, first disconnect the negative battery cable to ensure safety. Remove the drive belt by loosening the tensioner, then unbolt the alternator from its mounting bracket. Disconnect the electrical connectors and remove the alternator from the engine bay. Install the new alternator by reversing these steps, ensuring all connections are secure and the drive belt is properly tensioned before reconnecting the battery.