Rear Sliding Window Opens a little the stops. What's the problem?

I have a 1999 sr5 ext cab with the rear sliding powerwindiw. When I click the button, the window will open a little bit bu then stops, The motor is still working while I press the button, the window will not move. Does anyone know what I should do?

 

Learn something new everyday on the forum...power rear window? Never knew 1st gens had this option

 

yup I've never seen that either.

is there anything stuck in the window track? that's where I'd start

 

I think that if you find nothing in the track that would stop the window, then one o' them plastic gears in the window's drive mechanism broke away from the wheel. I assume that when the window stops opening you can close it using the power button??