Only have 200 miles and when running there is a passenger air bag alarm that looks like a passenger sitting with an X over the air bag and the number 2 also says off. When someone is in the passenger seat it says on and a picture of a carseat with an X over it. Just happened only had truck three days hope this is not the beginnings of trouble

 

That sounds normal. The truck senses when the passenger seat is empty and disables the airbag on that side. The one with the carseat is telling you that the airbag is on and a carseat shouldn't be used there.

 

What does the owner's manual say about it?