This happens when the window motor gets weak, or the window track gets full of dirt. Here is how you can remove the door panel and window motor and regulator so you can clean the track or replace the motor/regulator you can find a new one on eBay. Check out the diagrams (below). Please let us know what happens.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.