Buick Century multiple broken window regulators causing windows to drop open on Buick Century

Some Buick Century owners report experiencing issues with multiple broken window regulators, leading to windows dropping open unexpectedly. Common problems include the failure of the power window regulator, often due to a broken main anchor or damaged lower fairlead. Additionally, worn-out components and age can contribute to these failures, resulting in windows that do not open or close properly, with some exhibiting intermittent movement or sudden drops. The failure of nylon clips that secure the cabling can also cause windows to drop down unexpectedly. In cases where the window goes down smoothly but struggles to roll back up, this may indicate binding issues with the window regulator affecting the motor's performance. To resolve these concerns, it is essential for a mechanic to diagnose the fault, test the window switch and regulator for proper voltage signals, and potentially replace any faulty components.