I was driving with a dog in the back of my truck with the window partway down. When I got home the window went down fine but the next day i could not get it to go back up. I eventually pulled the window up far enough to keep rain out. When I use either the switch or the key all I get is the sound of the motor moving but the window doesn't move up or down. I don't know if the dog bumped the window and knocked it off track of what. Is there an easy way to fix this? When I opened the tailgate the window appeared to be in the track.