My sis in law's 02 trailblazer the back windows are on some sort of cable drive. The cables have come out of their mounts and the pick up reel is a birds nest of cable. Never came across anything like this. Are they shot? Can a " shade tree " like me give them ago and get them working again? She is tight on money and I cant spring for them myself. Any help at all is appreciated!!!!!!!!!!!!! Thanks in advance!