Search a lil harder...because it's been gone over MANY times
A short simple answer for you:
NO, none of the Grand AM PCM's (even the one for the SE) will work on an Alero. You gotta get a hold of Jason at DHP (jasonjeross@hotmail.com) and he'll let you know what to do as far as getting one for the Alero..it's simple and isn't any more expensive. Just send him an email and ask him.