The automatic lock actuator went out on my truck's driver door. Does anybody have one or know a place where I can get one without paying dealer prices? I've looked around on the internet but cant seem to zero in on it. Can you replace just the actuator or do you have to replace the whole latch mechanism? Anybody know the part number(s)? I would even do a "u pick it" salvage yard if anybody knows one in the south/southwest area of Houston, that may have it. Thanks for any help.