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Home >> GMC >> 1983 >> Forward Control 5.7 M, Automatic, 400/M40 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Steering Column Switches >> Turn Signals & Hazard Flashers >> Testing & Trouble Shooting >> Turn Signal & Hazard System >> Turn Signals Inoperative (One Side)

Turn Signals Inoperative (One Side)

  1. Turn on hazard system. If one or more lights are inoperative, replace lights as necessary. Test light sockets for power or poor ground connection.
  2. If all lights operate with hazard system on, inspect for improper lamp or inoperative turn signal switch. If turn signal flasher can be heard, but lights do not operate, check for a short circuit.