I have a 2000 Camaro and its a automatic, well what my problem is i drove the car about 20 miles and got to where i was going and cut it off. Well a hour later when iI got back in to leave it wouldn't start , it wouldn't even turn over and the alarm was going off. And normaly when you put the key in and turn it on the alarm wont go off. Well i thought the battery was dead so i got some one to give me a jump but it still wouldn't turn over.And i noticed the battery gage had a 13 amp charge when the cables were hooked up but only had a 5 to 8 charge when the cables were not hooked up. But even with the cables hooked up it still wouldn't turn over, the door locks wouldn't work,and the alarm wouldn't turn off. any help ..