Window won't go up
 

Hi guys,
My window sometimes go up and some times don't.
Sometimes I hear the motor pushing the window hard then stop moving up.
Any idea which part might going defective .
Thanks

Maybe the glass is binding in the track. Maybe the glass or the tracks have come loose so that the glass can tilt and bind.

You will have to take the door panel off so that you can look inside to check things.

thanks
but when i try pulling the window by my hands, it does close the window.
i do not think its the track.
could it be possible the motor is going weak ?

It is possible that the motor has gone bad. Maybe the brushes in the motor are almost worn out and making intermittent contact.

It's also possible that the vulcanized rubber sections of the big final drive gear in the motor have separated. But you should hear the motor running without the window moving.

thanks for your support.
it turns out to be motor was weak.
installed reman motor and it works perfect.