i would consider goin with an aftermarket one anyways for the reason that the facotry doesnt have impact sensors. this is why my car got broken into(they smashed my window :madfawk: no alarm) stupid people didnt jump through the window to do whatever they wanted 4 however long but then opened my door and poped my trunk. thats when it went off. they stole my amp but didnt take my subs also they fawked up my dash with screwdrivers and bent in the sides of my deck but couldnt get it out. so my 2cents get anaftermarket and :madfawk: the theves