2002 Oldsmobile Silhouette Door locks are locking themselve

This minivan just started having intermittent door locking problems. The door locking solenoids will lock themselves intermittently. No matter if you are driving or while the car is sitting shut off, if the keys are in the ignition or keys not in the ignition, the door locks will cycle themselves into the locked position. It will do it up to 10 times an hour. The keyfob, the door switches all work nomally also, it is just that something is activating the door locks.