Your truck might have already had sentry key. Look on your window sticker or have your dealer run a VIP for the option list. Otherwise go get a $2 key cut and if it starts the truck you do not have sentry key.
If it does, unfortunately you wasted the money on the aftermarket alarm. You will find no better system then the factory anti theft. They will be able to steal it, but they will not be driving it away.
If it does, unfortunately you wasted the money on the aftermarket alarm. You will find no better system then the factory anti theft. They will be able to steal it, but they will not be driving it away.