In winter, it’s tricky to keep your energy up, especially by the end of the day. All you want to do is slip inside, get your slippers on, and enjoy time with the family during the holiday season. You pull up to your home and hit the garage door opener button. You wait a moment, try again, but nothing happens! It can’t be the door opener remote, you just changed the batteries! Oh dear, it looks like you have to reprogram the LiftMaster by Chamberlain garage door opener!