Hello everyone,

I want to change the rear light from my 2018 Insignia B to Buick Regal MY 21(china) full led.

In the model from Insignia B/Buick Regal from 2018 to 2020 is the the brake and tail light led but turn, backup and fog are standard Bulb.

The "new" 2021 -2024 buick china have full led.

Dose anyone have successfully disabled the bulb check in the bcm?

Very King regards 😀

if the bcm its the same, should be possible.

have you a vin?

The BCM from my bcm i have. InsigniaB_MY18.zip

But to find a vin from buick regal china i was unsuccessful.

It very hard to find any useful data oder information.

Hi. Yes, the check can be disabled. I did this on a Buick using Calibration 7. What is your car's VIN?

From Insignia 2018 W0VZX6ECXJ1099744

Hi. I don't have BCM cals from chinese Regal. But I can find chinese VIN and check cals in TIS.

You need to use this one calibration:

If you need VIN and you can download calibrations for it I can send it to you.

Try recording with this calibration. If the check is disabled, you can use the process of elimination to find the specific "01 01" values that need to be replaced with "00 00." I flashed a Buick Encore about 20 times before I found the right ones that disabled the check.

39142439.rar

The VIN of chinese regal shoudld start with LSG....

I have 2 of Verano GS, (european astra K) and start with LSGB....

2 hours ago, Pavel said:

39142439.rar 442 B · 1 download

I will try my best and find out. Thx for the start

At least, Insignia 2019 onwards, uses 13535989 bcm, this BCM are used in a lot of cars, like CT5, XT6 Camaro RS, SS ZL1. GMC Acadia, encore GX.... maybe some of this can uses ful rear led lights...

Chinese regal should uses this bcm too

Hello, I can try and ask my chinese friend for a copy of MY2021 Buick regal. My understanding is the OS is different on MY2020 compares to your MY2018. I do have chinese regal BCM from 2018, but I assumed it doesn't have the LED bulbs at the rear lights.

There was a post about disable bulb for the indicator bytes for different vehicle, annoyingly I couldn't find it. :(