Service theft deterrent system light came on and truck won't start how might I go about fixing my problem. I had an Avital remote start put in back when I got truck in 2015. I changed the battery in the key fob and still won't work I've read the owner's manual and that's not giving me any advice. Please help if you can thank you

 

Did you figure it out?

 

Yes, all I had to do was disconnect the battery cables and then reconnect them.