Hi guys I got a 52 astra 1.8 sri and whats bothering lately is the alarm. Once i double lock using the key fob at times the alarm would go off. Not all the time but sometimes. I read that it might be the powersounder but this does not happen all the time and also if I just lock it once with the keyfob then its ok, not alarms go off. I think it might be the powersounder coming to its death soon, what do you guys think?