the window has a cable that lifts or drops the glass, motor pulls the cable. The crackle noise may have been cable binding up. you can't fix it. I had to replace window regulater about $135.00 dealer part.One side cost more than other. I would get a shop manual from parts store. not that hard to fix but not that easy.also glass is held in place by two plastic nuts. remove them from the regulater then pull out glass.
