Originally Posted by paulmega
That wont work on the truck that the OP and myself have. On the 2500 with keyless entry and remote start, the keyfob is different then what I beleive the 1500's have. If the keyfob is anywhere near the vehicle , anyone can just touch the door handle and unlock the doors and once in the vehicle all they have to do is push the start button. On the 2500's the keyfob is not inserted into anything to start the truck, it just has to be near the truck. These trucks do come with a key but it is only to open the door if your battery is dead. If you try to open the door with the key it will sound the alarm.
Exactly so the spare key is worthless I can get into the truck and start it with the iPhone app but can't drive it.