I bought a 2005 Trailblazer and shortly after I bought it I broke the key fob and am just now getting around to replacing it. I’ve tried 2 different key fobs now and they won’t program, it’s like I can’t get into the program mode. I follow the steps and shortly after the locks cycle they cycle again and the horn honks. My rear wiper, defrost and license plate light all work fine. What could it be?