I have to be standing next to my Jimmy for my remote to unlock/lock the doors. It has the old remotes (I think in 1999 they re-designed it) without the alarm, but I would like a security alarm and to have a stronger signal. A factory alarm. If it isn't possible does anyone know where I could get a new thing for in my truck to sense my key from 20 feet away? Also, most importantly: where is the receiver even located in my Jimmy?