There may also be an issue with the turn signal switch itself. If the four way flashers work but the turn signal does not, it may be the turn signal switch on the column. PN 61-31-1-377-987. to replace, remove "button" at the center of the steering wheel by prying it out, remove nut retaining the steering wheel, and then remove the plastic shroud and the under dash cover to access the wiring connectors (non air bag car only)