1986 Cadillac Deville

Electrical problem
1986 Cadillac Deville V8 Front Wheel Drive Automatic 92000 miles

I have a two door 1986 Cadillac Deville which I inherited from my father. The window switches work when I want to roll the window down for the driver's side and passenger side. It does not work to roll up the passenger side window when using the driver side up button. The passenger side window button does work to roll down and up the passenger side window. As a result I can assume that something must be wrong with the window regulator, control switch panel, or window motor on the driver's side. How would you diagnose the problem? What needs to be fixed?
I found the answer. The window switch on the drivers side had to be replaced. *Thanks everybody for your help in this matter*
Eric Richelsen
June 18, 2008.

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