As soon as I got home this morning, I turned the ignition off and removed the remote. I opened the driver's door and the chime went off and would not time out. I closed the door again and the chime went off. I got out of the car and tried to lock the doors with the remote. The doors and tailgate did not lock. Now I can only lock the doors using the key. Tried my wife's remote and the malfunction persisted. At least the symptom is repeatable, not intermittent.
Note: The tumbler in the ignition switch was replaced by the dealer in May of this year due to problems with the locking/alarm system. It took ONLY seven trips to the dealership to have the problem fixed!
Please help me before I go nuts.