GMC Repair: electric door locks, rear panel doors, electric door locks

Question
I have a '96 GMC suburban. The passenger door locks (the front passenger side and both back doors) quit working. Neither the remote, keyless entry or the actual switch on the drivers door will unlock the other three doors. The rear panel doors will unlock but only with the keyless module rear door button, not with anything else.  I have replaced the actuator motor in the passenger door and they all worked but only for a few weeks.  Any advice or test to help diagnose would be greatly appreaciated?  Thanks.

Answer
I do not have an electrical schematic for a 1996 but what I have seen alot of was that there was a break in the wiring that goes thru the rubber electrical boot between the door and the front fender.

You want to remove the drivers side door lock switch and test the terminal for battery voltage while you manipulate the electrical protective boot and see if you loose battery voltage to the switch.


let me know.


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