ok I have a 97 Buick Century with 3.1L. The left turn signal flashes quickly and the left turn lights do not some on. The right side works fine. I checked the bulbs and they are good. I know it is not the wiring because my car is in really good shape. Do you really have to replace the whole turn signal in order to fix this problem? Is there something else I can do like clean the contacts of the switch. Anyone with ideas hit me back.