After replacing the evaporator core left headlight, blinker and taillight do not work?

KENNETH PARKER

MEMBER
2019 CHEVROLET IMPALA
2.5L
4 CYL
2WD
AUTOMATIC
110,100 MILES

We took the dash out to replace the evaporator core and we put everything back the way we took it out and now the left headlight and left blinker and the left rear running light do not work anymore?

Monday, September 18th, 2023 AT 9:02 PM

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

There is a ground G203 at the left side of the dash kick panel, I would check this first. If that is okay let's check the fuses, this guide can help:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Please go over this guide and get back to us.

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Wednesday, September 20th, 2023 AT 6:12 PM

KENNETH PARKER

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4 POSTS

I checked the plug that goes to the lights, and I am not getting any power to the left side lights and the right side has power.

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Thursday, September 21st, 2023 AT 7:42 AM

KEN L

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Did you check the ground I have mentioned?

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Saturday, September 23rd, 2023 AT 10:24 AM

KENNETH PARKER

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4 POSTS

Ken L, yes I have they are all tight.

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Saturday, September 23rd, 2023 AT 3:34 PM

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Okay, when you did the job did you remove the BCM? I would try checking the plugs. Also, let's try resetting the computers by following this guide:

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

If this doesn't work, we need to run the codes by doing a CAN scan. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Please go over these guides and get back to us.