I need to diagnose the failure of the driver's side back power window. Here is what it does: the master driver's switch does not work, and the switch for that window doesn't work. All other windows work. Because both switches do not work it leads me to believe that it is not a switch problem, but what could it be? The motor? Or, if the switch on the master switch fails, does that keep the one that goes with the window from working? Please let me know what you think.
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Darius in Albany NY '86 744 GLE, 91 745T
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