Have you ever had this scenario happen? You head home, and the sun is low in the sky. You're tired and ready to settle in for the night after a long day of work. But you get to the garage door, punch the remote control, and wait – nothing happens. Maybe you try again. And again. But eventually, you realize something isn't right. You recently serviced your door opener remote, so you know it works. Nope. Your Chamberlain or LiftMaster garage door opener needs to be reprogrammed. Where do you even start??