my battery his been gettin knock down alot. when i get really for work. my car is dead. i mean the lights and bell work. but it won't start. and this car unless to have a aftermarket car alarm because he took the stock one off and put in a better alarm. now i know he took it off because he traded this car in. i need to solve this problem soon. well it work if i just put in a aftermarket alarm to fix it. or just took to the chevay dealer to check it out?