After numerous successful operations, those window regulators are going to go bad. Whether they slid off the tracks, got rusted out due to water, or the wires are damaged, these replacements will get those windows working once again. Since this is a fairly common issue, there are numerous DIYs available online. If you notice grinding or rattling, if your window is clunking on the way down, or if it simply won?t operate at all, replace that worn out regulator.Does not include a window motor.Please Note: Regulators are side and door specific.