Front and back left turn signal not working

Tiny
KGOOD
  • MEMBER
  • 2003 BUICK LESABRE
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
The running light works, hazard lights work and the right signal works. Just left side turn signals not working.
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Wednesday, December 2nd, 2020 AT 6:32 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

When you turn the left signal on, does anything happen? For example, does the indicator come on in the vehicle or flash rapidly? Also, when you turn the hazard lights on, do they work?

I'm looking through the wiring schematic, and I notice that power goes through the hazard /signal switch before going to the flasher module. See pic 1. Let me know if anything is happening when the signal is turned on or when the hazards are turned on. If it still doesn't work, I will need you to check for power at the module's light blue wire when the left signals are selected. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know. If you have other questions, let me know that as well.

Take care,
Joe

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Wednesday, December 2nd, 2020 AT 7:03 PM

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