My car will continually lock and unlock the doors and blow the horn of course, this continues even when the keys are in the house.
This will continue until the batteries are pulled. Acts like the passive system is turned on. No mater what I do, talked to the local chevy service tech. He suggested taking the battery out of one fob and setting the other up, to find which one is bad, did this and they are both bad, seems unlikely both go bad at the same time. One fob is original to the car and the second when I purchased the car in 2002, the dealer order the second fob. I would think others have had this problem, this has gone on for a few years. Sure hope someone can help.