Lumina Door Locks

98 Lumina Power door locks work intermitently. Driver door lock seems to be culprit. Can unplug it but others still will not finction. Could it be the body control module or is it the drivers side switch?

there is a door lock relay and usually it is behind the glove box,,,best way to find it is operate the locks and listen for a light clicking behind glove box area,,also check the grounds on the drivers door wire harness they usually ground to the door shell inside under door panel