Left turn signal not working properly

Tiny
RYANMOTO
  • MEMBER
  • 2018 CHEVROLET TRAVERSE
  • 4WD
  • AUTOMATIC
  • 50,000 MILES
My left turn signal will start blinking normally when used, then after 3 seconds it begins blinking rapid like a bulb is burnt out. I have checked all 3 bulbs (front, rear, and mirror) and none are burnt out. I was wondering if anyone could help me find which fuse or relay commands the Left turn signal so that I can check those before replacing bulbs. Again, all bulbs appear to function properly.
Wednesday, January 19th, 2022 AT 5:34 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning.

The body control module controls the speed and operation of the turn signals.

If there is a fault, there should be a code stored. It will not show up on a standard code reader. You need one that will read codes for the BCM.

It could just need an update, or it may have to be replaced.

Roy
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Wednesday, January 19th, 2022 AT 6:21 AM

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