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How to activate remote start and change VIN number in GM's instrument cluster BMC


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How to activate remote start and change VIN number in GM's instrument cluster BMC

In order to activate remote start on GM vehicles you need:

1. Find VIN car("new VIN"), which have remote start options (PRO code BTV).

2. Update firmware for BCM from SPS with "new VIN".

3. Change VIN in BCM from "new VIN" to your original VIN in order to odometer shows correct data. For this you need cheap CH341A EEPROM tool like this.


USB BIOS EEPROM SPI FLASH Programmer CH341A 24 25 series

 

The following video show you how to setup the chip reader and program the chip.

https://www.youtube.com/watch?v=5NYe21nFSDI

 

BCM block.

IMG_20210503_105725.thumb.jpg.639a0a395b8b41bcdb60241da0100809.jpg

Chip location.

1319435397_IMG_20210503_115542(2).thumb.jpg.c6b601e867cdaa0ed3b6076a7dca2474.jpg

1113832941_IMG_20210503_115548(3).thumb.jpg.0f819d95317e386a92453772edb75c6b.jpg

 

It would probably be best to first make a backup of the chip in case anything goes wrong. Then you can view the contents of the chip. In the software, the left side of the screen shows the actual program, which is displayed in Hexadecimal numbers. The right side shows a translation in plain text.

On the right side, look for a string of numbers that look like a VIN. It is usually only a few lines down from the top. It is always missing the first number of the VIN. Replace it with your VIN (minus the first number) by simply highlighting each letter on the right side and typing in your VIN. Then program back the chip and you’re done.

 

1620742504_Screenshot2021-06-01134750.jpg.9d5a7d5cd0e501b347796d1cd8c8369a.jpg


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  • 2 weeks later...

No luck with remote start for me.

I got Cadillac remote start key. The key unlock all doors but will only start the car via push button if the key is place in the armrest key pocket.

If the key is on the seat the car won't start like the original key.

I got a copy of USA Buick regal BCM calibration files and program it my BCM. However, no remote start, no boot open via remote key, and the car windows doesn't work. lol.

I may need to dissect the BCM calibration package which is a lot of files 20 I think, to find out which calibration file is the one that activate remote start then compile that file with my original BCM calibration package.

I may have to leave this until I have some good free time.

 

Photos of the remote start option display on my screen.

IMG_5076.jpgIMG_5077.jpg

 

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8 hours ago, Troy said:

It's a 1.6 SIDI turbo petrol engine.

My knowledge on the petrol engines is limited but for the EDC17 you have to activate remote start in the software. It's just a matter of changing one 0 to a 1. In case you have possibility to read out the CAN messages on the HS-bus, then you can see if the remote start command is forwarded from the BCM or not. Would that be an option?

 

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On 7/24/2021 at 9:06 PM, Troy said:

No luck with remote start for me.

I got Cadillac remote start key. The key unlock all doors but will only start the car via push button if the key is place in the armrest key pocket.

If the key is on the seat the car won't start like the original key.

I got a copy of USA Buick regal BCM calibration files and program it my BCM. However, no remote start, no boot open via remote key, and the car windows doesn't work. lol.

I may need to dissect the BCM calibration package which is a lot of files 20 I think, to find out which calibration file is the one that activate remote start then compile that file with my original BCM calibration package.

I may have to leave this until I have some good free time.

 

Photos of the remote start option display on my screen.

IMG_5076.jpgIMG_5077.jpg

 

I bought a copy of the same key from aliexpress. It was successfully stitched into the car. All functions work, including Keyless. The only problem is that it is not stable. Sometimes the car loses it, but this is rare

20210723_004102.jpg

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