Put my rear drivers window down and it will not come up. When putting it down, I heard a popping noise, almost as if it came off the track, but kept on putting the window down.

When I try to put the window up, I do hear the window motor going, but nothing is coming up. What should I do?

I tried to lift the window, but there is only a 1/4" of window showing and I cannot grab it.



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'89 420 SEL
'90 300 SEL
'84 300 SD (sold it)