GM Service Manual Online
For 1990-2009 cars only

Cause

Action

The turn signal switch is broken.

Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .

Foreign material or loose parts are impending the movement of the switch

Remove the foreign material.

The detent is broken or missing.

Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .