Originally Posted by nyydynasty
i have yet to change my password but if I'm not mistaken, as soon as your gmail app fails to sync with the servers (because of the pwd mismatch), it should notify you. When you click on that notification, it will give you the option to change your password.
if you haven't gotten that notification, try to turn off the gmail auto sync and turn it back on. That should force it to resync.
I can confirm this is the case. As soon as it fails to sync, you'll get a notification icon with the message "Sync error with <email address>". You click the notification and it gives you a password prompt.
You can also just hit "Sync all" or the "Sync" button in the Gmail account that the password changed.