When you say the lock on the passenger side will not work at all, do you mean the lock is not functioning with any switch or do you mean that the passenger's switch is not working? In any event, since this is an intermittent problem with the driver switch, I suggest inspecting the connections to the switch. If the connections are dirty or loose it will cause these symptoms. The passenger side switch may be completely dead and need replaced so try substiting a known good switch with it.
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Thursday, April 9th, 2009 AT 2:13 PM