The 250-3020 cruise control switch is applicable to early model GM columns. If the end of your rounded GM turn signal is flat, and is held in by a single set screw, then this may be the switch you need. Please call for application questions. This switch will not work with an OEM cruise control. It is designed for an aftermarket cruise ONLY. If you have an IDITIT or Flaming River steering column, this is the switch you need.