Horn Honking with the keyless entry

What is your question?

As usual the keyless entry will honk the horn when you push the lock button twice to confirm the doors are locked and all closed all the way..... but when i press the unlock button twice to unlock passenger door aswell as driver door it honks the horn twice aswell... ive never had that happen with any previous silverados ive had... i was wondering if maybe its a problem in the remote and i need to get a new one or a problem in the truck?