My mom has an Olds Alero and I have replaced the window regulators 4 times on different doors. I'm not sure if its the parts suppliers fault or if its General Motors terrible design. I heard Aleros were lemons anyways. The cable always comes off the plastic wheels and gets wrapped and knotted up. I usually don't give bad ratings but after buying 4 of these things and then having them break not even a month later, I just welded a rod inside the door so the window never rolls down again.