Turn on the dome light. Watch the light closely as you push the button for the
window, key on of course. If the light dims briefly (do it 3-4 times, it can be
to see) the wiring and switches are ok. Occasionally the motors 'stick' from
lack of use.
To free it up:
Turn the key on
Open the door
Hold the switch in the Down Position
Rap the door hard with the side of your fist or a rubber mallet. Hit it down
about halfway back.
Lube the run channels and operate the window fully in both directions 5-6
Start removing the door panel, WBMS. The windows least used are the ones
to fail sooner. The reason is the switch contact become corroded from non
use. When they are used the corrosion leads to arcing that erodes the
contacts. That is why us collectors make it a point to run all of the
switches on our vehicles as part of the 30/30 rule
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