All Investigations » Investigation EA02037

  Defect Investigation of Turn Signal Failures

Investigation of Turn Signal Failures

Subject: Turn signal failures
Components covered:
  • Hazard flashing warning lights
  • Hazard flashing warning lights switch
  • Turn signal
  • Turn signal switch
Investigations Summary: This investigation was opened on Dec. 23, 2002. It was closed on Sep. 5, 2003. Note: this investigation has resulted in a vehicle safety recall.
By letter dated August 27, 2003, gm notified the agency that it is conducting a voluntary safety recall (NHTSA recall no. 03v327) involving certain model year (my) 2000-2001 Chevrolet malibu, Oldsmobile alero, and pontiac grand am. Gm's recall covers 670,740 vehicles manufactured beginning February 1, 2000 through may 1, 2001 (alero and grand am) and February 1, 2000 through may 31, 2001 (malibu). Gm reports that turn signal failure is due to solder joint cracking in the hazard switch, and has identified rapid temperature transitions of the hazard switch and the soldering process as the cause of cracking. Electrical current to the turn signals flows through the hazard switch and an open circuit in the hazard switch will cause the exterior turn/hazard lamps to become intermittent or inoperative. Gm will replace the hazard switch on all involved vehicles. Based on gm's safety recall action, this investigation is closed.
Vehicles Affected by this investigation:
  • 2000 Chevrolet Malibu
  • 2001 Chevrolet Malibu
  • 2000 Oldsmobile Alero
  • 2001 Oldsmobile Alero
  • 2000 Pontiac Grand Am
  • 2001 Pontiac Grand Am

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