where is the turn signal switch

Did you replace the blinker relay? If your turn signals and 4-ways are inoperative, you will need to replace the blinker relay. GM traditionally mounted these about halfway up the steering column, but on newer cars I have seen the blinker relay mounted integrally to the turn signal switch, requiring the removal of steering-column trim pieces to access.

I'm not sure if you asking about the turn signal flasher. If that's what you're looking for it should be under the steering wheel, above the brake pedal bracket. Mine was bright green, but switched it to a black one. It's a little bit hard to pull out.

you can slide the [URL="http://www.familycar.com/autoparts/saturn/turn_signal_switch.html"]turn signal switch[/URL] and can be taken apart to be cleaned & lubed. dude when the spring pushes the lever back to the center and turns the signal off unless you hold it so try checking if it is still working. put the switch back at the front.