I replaced the alternator twice. After I replaced it the first time I had it checked and it was bad. So I replaced it again and the charging system light is still on and the problem is still occuring the same exact way it was before. Also just put a brand new battery in when I replaced this alternator. The problem happened as I was test driving it around the block. So my question is can the PCM cause the alternator to go bad or did I just get another bad alternator or is there some other problem?