I know what your thinking, door actuator. Truth be told so did I Thanks to the help of my fellow Durango owners I was able to replace it. Just bought the D and have ran it for over a month with no problems. The driver front door lock was going in and out, then finally out. I replaced it with a dealer door actuator and no luck. Took my Fluke and can't seem to see any voltage. There is a four wire adapter going to it. Here is the kicker, all the other doors lock/unlock fine, it is just the driver door. Could it be a ground? Relay? If so where should I look? Thanks so much in advance and any help I can get would be great!