I am having troubles with my passenger air bag in my 2008 Aveo LS. When no one is in the passenger seat, the display tells you that the air bag is off. Occasionally when my sister or boyfriend sit in the passenger seat it still says the passenger air bag is off. The first weekend I had my car, I took it on a trip from Tampa to Gainesville. On the way their the air bag worked fine but on the way back it was off. My boyfriend weighs about 155 and my sister, 115. This should be enough to tell the sensor that an adult is in the seat. My dealer is passing it off as me being a stupid girl who doesn't know anything. Has anyone else had this problem or maybe know what to do?