Left rear turn signal not working

Welcome to 2CarPros.

Does the left signal flash fast? What I need to know if the vehicle has the LZ package or not. Also, using a test light, probe the blue wire at the light socket to see if there is power. You may just have a faulty socket or the problem could be related to the logic module.

I attached a picture from the schematic of the vehicle. The brown wire is powers the element in the bulb for the parking lights. The blue is for brake lights and signal lights. Being the brake light works on the left side, that tells me the ground is good and the bulb. Which leads me to the logic module which is part of the body control module. However, I need to know if terminal A on the plug (blue wire in picture) is getting power when the signal is on.

Here are a few link that you may find helpful when checking:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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

Let me know if I can help or if you have other questions. I will watch for your reply.

Take care,
Joe

Welcome back:

Were you able to check to see if there is power to the wiring? Also, what wiring did you replace? Was it only for the light socket? And the brake lights worked before but don't now?

Let me know.

Welcome back:

Great. I'm glad you found the issue. Take care and let us know if you have questions in the future.

Take care,
Joe