my right turn signal works fine during the day. but come dark it blinks fast. does m sensor on top have anything to do with that and what can i do?
Jun 28, 2025 at 4:48 PM
turn signal when dark outside it blinks fast?
2016 CHEVROLET TRAVERSE
MAILHANDLERJON#1
- MEMBER
- 4 POSTS
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I would turn all of the lights on at dark to see if any of the light bulbs/LED's are out. The control for the lighting come from the BCM. If all of the lights seem okay, you may have a BCM going out. We should do a CAN scan to see if any codes are stored. This video will show you how:
https://youtu.be/u-4syLc-ifQ
Please go over this guide and get back to us.
https://youtu.be/u-4syLc-ifQ
Please go over this guide and get back to us.
Jun 30, 2025 at 3:41 AM
i'm pretty sure i saw one light out of two on the bottom of the lights. I'll have to check it out during the day.
Jun 30, 2025 at 3:25 PM
Okay, if so, the next step is the CAN scan. The problem is only when it is dark correct? This would be internal programming inside the BCM.
Jul 1, 2025 at 11:28 AM
for some reason no one seems to know where the bcm is or doesn't want to share. i do my work if i can reach it.
Jul 9, 2025 at 9:58 AM
Here is the location of the BCM under the dash on the left side, you can get a preprogrammed unit by searching Google or Ebay. Check out the images (below).
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
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Jul 9, 2025 at 11:02 AM
i'm assuming that's just left of the steering wheel.
Jul 9, 2025 at 2:56 PM
Yes, that is correct, you will need to remove the knee bolster to get to it.
Jul 10, 2025 at 2:45 AM
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