Theft deterant system
 

Please help, truck is saying service theft deterant system, haven't tried starting it yet today but last time it wouldn't click over, bfs not home and I need my truck what can I do if it doesn't start?

what year?
did the battery slowly die or was it replaced?
if you have a second key, try it. if that doesn't work get the theft deterrent codes read and post them here. if you can't do that then you will have to have it towed to a shop. nothing you can do without the fault codes.