I'm on a mission to create a bench setup for some GM Global-B architecture modules. My aim is to figure out some method which can be used to recycle GM Global-B modules, including changing VIN and PIN. I have some Global-B modules coming from the USA, an IPC, BCM and an ECM for starters. 

 

Things I need to know before those modules arrive.

1. I need to know if I can connect a Global-B BCM direct to the power and Canbus data line and have DPS read the VIN, similar to the Global-A modules?

2. Will I need to route the BCM through another module, like the Network Gateway Control Module to read the Global-B VIN with DPS?

 

This article is a placeholder for future experiments and findings.

 

 

Update 8/March/2023

Today I received my new toys from the USA. An IPC and a BCM, from a 2022 Sierra 1500 Global-B. A BCM and an ECM from a 2022 Silverado 1500 Global-B. A BCM and an ECM from a Chevy Onix Global-B. I don't have the wiring loom, so I'll need to connect them using jumper wires which is going to take me a long time to figure out. Hopefully, I'll have this bench setup up and running.

 

Update 17/March/2023

I've tried for a few days to get DPS to read the VIN in these modules without any success. Anyone has info and a working Global-B bench setup, can you tell me which data pin number on the OBD connector and the BCM pin number for reading VIN with DPS?

Looking at the data OBD connector schematics, I can see the 4 data lines going directly to the gateway module. On the gateway schematics, I can see two 60Ω resistors, do you think I need to add 2 60Ω resistors to the data lines in order to read the VIN with DPS?

 

 

Update 19/March/2023

I've added the 2 60Ω resistors to PIN 6 and 14 data lines. However, I still can't get DPS to read the VIN from the BCM. My next route is to source a Global-B 2022, 3-plug port K56 serial data gateway module. Until then, I'll have to place this puzzle on pause. 

 

I see that DPS has the option for "with or without gateway". 

 K56 Serial Data Gateway Module
The K56 Serial Data Gateway Module gates messages between the CAN networks described in the Controller Area Network (CAN) Bus Description section below. The K56 Serial Data Gateway Module needs to know what CAN control modules are present on a given vehicle in order to enable/disable loss of communication DTCs and to know what CAN control modules to track for their communication status. The K56 Serial Data Gateway Module has the ability to learn the diagnostic addresses list of CAN control modules to identify what CAN control modules are equipped on the vehicle and what CAN buses they are on. If the K56 Serial Data Gateway Module is replaced, this learn/verification process will have to be done again through K56 Serial Data Gateway Module programming and setup procedure in SPS. This learn process will not cause any previously learned contents to be forgotten/overwritten. If the learn process is not done on a new K56 Serial Data Gateway Module, DTC U1977 will be set until the learn procedure is executed. If the learn is invalid due to control module internal malfunction or a K56 Serial Data Gateway Module swap, DTC U3000 42 or DTC U3002 56 will be set. If any of these DTCs sets, the K56 Serial Data Gateway Module will enable loss of communication for all CAN control modules. This will result in loss of communication DTCs being set against CAN control modules that are not equipped on the vehicle.
A fault can be localized by monitoring the normal mode messages on a CAN bus. The K56 Serial Data Gateway Module will monitor one signal per CAN control module per CAN bus to determine control module status. When a signal times out, a loss of communication event will be started.

 

Update 27/March/2023

Using @T c suggestion for reading the VIN with DPS at the beginning when ECM is powered on. That worked, and I can read the VIN with DPS in the 2021 global-B Chevy Onix ECM. The Onix doesn't have a separate gateway module like some of the other GM vehicles. I think the Onix gateway module is combined in its BCM. My BCM seems faulty, so I couldn't test with both modules fully connected. 

I should receive the global-B gateway module sometime this week, hopefully then I'll get the other modules working.

 

GM Techlink article, which has some info.

 

Update 12/April/2023

I received and connected the serial gateway module with the other modules, as shown in the GM SI schematics. I can now read the VIN with DPS anytime for all modules and perform partial programming, which is excellent. One step further. 
Global-B command functions differ from Global-A, which will take me some time to understand fully.
You will need the serial data gateway module and a genuine MDI2 to do any programming for a Global-B bench setup.

 

 

 

 

Data Link Communications Description and Operation.pdf

 

 

 

Update 18/October/2024

It is now possible to change the VIN and program General Motors Global-B UDS VIP 12-byte seed security electronic modules using the GM DPS tool. This is an excellent option for those who want to replace a faulty GM Global-B module in their vehicle by recycling a used module purchase from a scrap yard or eBay. More info to follow later.

 

In the video below, I demonstrate changing the VIN in a GM Global-B BCM module from a 2022 Chevrolet Silverado using a GM DPS file I created.

 

 

 

 

Update 1/October/2025

Today, I assisted a member who required information to connect the BCM to the Gateway module for a Global-B bench setup. I post the information here in case anyone needs it.

Info for connecting the BCM to the Gateway module for a Global-B bench setup.

Six pins are used to connect the BCM to the Gateway module.

Two battery positive and two battery negative pins need to be connected, along with two AUTOSAR pins. In total, six pins are used for connecting the BCM to the Gateway module.

For the AUTOSAR PINS: Connect the Gateway connector port X1 PIN-18 to the BCM connector port X4 PIN-19, and the Gateway connector port X1 PIN-17 to the BCM connector port X4 PIN-20.

I hope this helps anyone who needs this info.

Global-B Sierra 1500 BCM X4 connector pinouts.

Global-B Gateway module X1 connector pinouts.

View full article

Hello, I am working on a GMC Sierra 1500 2022 on Global B Platform, I have only been able to read the PCM using godiag GT100+ on the bench, which is an E90 Using an interface called AEZFLASHER 3. I attach photos and the reading obtained with DPS. I am in Miami if you need help for this project I am at your service.

GCI_Log.Txt

Hi,

I can send to you log of Vehicle Key Provisioning from DPS. I think if it will be possible to calculate Key from Seed, it will allow to get access to module without Certificate.

7 hours ago, jesus teran said:

Hello, I am working on a GMC Sierra 1500 2022 on Global B Platform, I have only been able to read the PCM using godiag GT100+ on the bench, which is an E90 Using an interface called AEZFLASHER 3. I attach photos and the reading obtained with DPS. I am in Miami if you need help for this project I am at your service.

GCI_Log.Txt

 

Thanks, I should have my modules in a few weeks, hopefully then I can start to learn more about the Global-B

I live near a place that sells modules for $25 let me know what you need sir, happy to help.  Check inventory here:

U Pull R Parts Inventory | Auto Parts

UPULLRPARTS.COM

---

Before you yank...spend a few minutes with our online search and see what’s on the lot and how long it’s been out! You can also check what other models have the parts you need.

 

On 2/18/2023 at 4:59 AM, med458 said:

I live near a place that sells modules for $25 let me know what you need sir, happy to help.  Check inventory here:

U Pull R Parts Inventory | Auto Parts

UPULLRPARTS.COM

---

Before you yank...spend a few minutes with our online search and see what’s on the lot and how long it’s been out! You can also check what other models have the parts you need.

 

 

Thanks for that link 🙂

What year are the global B modules?

2 hours ago, WWEILER said:

What year are the global B modules?

 

The modules I got are for the year 2022.

4 hours ago, WWEILER said:

What year are the global B modules?

GM models using the VIP architecture include (Global B):

 

 

 

Buick

 

2021-2023 Envision

 

 

Cadillac

 

2023 LYRIQ

2021-2023 Escalade

2020-2023 CT4

2020-2023 CT5

 

 

Chevrolet

 

2023 Colorado

2022-2023 Silverado 1500

2021-2023 Tahoe and Suburban

2020-2023 Corvette

 

 

GMC

 

2023 Canyon

2022-2023 HUMMER EV

2022-2023 Sierra 1500

2021-2023 Yukon

Are any of you guys working with Trifecta Performance or Tapout Tuning, here in the US, with this stuff?

I've tried for a few days to get DPS to read the VIN in these modules without any success. Anyone has info and a working Global-B bench setup, can you tell me which data pin number on the OBD connector and the BCM pin number for reading VIN with DPS?

Looking at the data OBD connector schematics, I can see the 4 data lines going directly to the gateway module. On the gateway schematics, I can see two 60Ω resistors, do you think I need to add 2 60Ω resistors to the data lines in order to read the VIN with DPS?

BCM was on CAN2  , terminating resistor must be 60 ohms in total reading, if it was 120 ohms communication is pass and failed,, open circuit data in data bus diagnostic,

7 minutes ago, LLCasaol said:

BCM was on CAN2  , terminating resistor must be 60 ohms in total reading, if it was 120 ohms communication is pass and failed,, open circuit data in data bus diagnostic,

 

Ok i'll buy some resistors and check again. Thanks

17 hours ago, Troy said:

Несколько дней я безуспешно пытался заставить DPS считать VIN в этих модулях. У кого-нибудь есть информация и рабочая установка Global-B, можете ли вы сказать мне, какой номер контакта данных на разъеме OBD и номер контакта BCM для чтения VIN с помощью DPS?

Глядя на схему разъема данных OBD, я вижу 4 линии данных, идущие непосредственно к модулю шлюза. На схеме шлюза я вижу два резистора по 60 Ом, как вы думаете, мне нужно добавить 2 резистора по 60 Ом на линии данных, чтобы считать VIN с помощью DPS?

Hello, you looked at the board there in different ways connected

I've added the 2 60Ω resistors to PIN 6 and 14 data lines. However, I still can't get DPS to read the VIN from the BCM. My next route is to source a Global-B 2022, 3-plug port K56 serial data gateway module. Until then, I'll have to place this puzzle on pause. 

 

I see that DPS has the option for "with or without gateway". 

 

K56 Serial Data Gateway Module
The K56 Serial Data Gateway Module gates messages between the CAN networks described in the Controller Area Network (CAN) Bus Description section below. The K56 Serial Data Gateway Module needs to know what CAN control modules are present on a given vehicle in order to enable/disable loss of communication DTCs and to know what CAN control modules to track for their communication status. The K56 Serial Data Gateway Module has the ability to learn the diagnostic addresses list of CAN control modules to identify what CAN control modules are equipped on the vehicle and what CAN buses they are on. If the K56 Serial Data Gateway Module is replaced, this learn/verification process will have to be done again through K56 Serial Data Gateway Module programming and setup procedure in SPS. This learn process will not cause any previously learned contents to be forgotten/overwritten. If the learn process is not done on a new K56 Serial Data Gateway Module, DTC U1977 will be set until the learn procedure is executed. If the learn is invalid due to control module internal malfunction or a K56 Serial Data Gateway Module swap, DTC U3000 42 or DTC U3002 56 will be set. If any of these DTCs sets, the K56 Serial Data Gateway Module will enable loss of communication for all CAN control modules. This will result in loss of communication DTCs being set against CAN control modules that are not equipped on the vehicle.
A fault can be localized by monitoring the normal mode messages on a CAN bus. The K56 Serial Data Gateway Module will monitor one signal per CAN control module per CAN bus to determine control module status. When a signal times out, a loss of communication event will be started.

 

 

如果线路正常，您可以尝试在通电后立即读取。您可能会遇到意想不到的结果

3 minutes ago, T c said:

如果线路正常，您可以尝试在通电后立即读取。您可能会遇到意想不到的结果

I would prefer if I could read the modules anytime. I see in the GM manual a reference for "Module Service Mode" maybe the gateway module is what activates the service mode.

On 19/3/2023 at 9:01, Troy said:

Preferiría si pudiera leer los módulos en cualquier momento. Veo en el manual de GM una referencia para "Modo de servicio del módulo", tal vez el módulo de puerta de enlace es lo que activa el modo de servicio.

OCUPAS VER SI TIENE GETWAY  O NO POR ESO  DPS TE DICE QUE ELIJAS ESO  

Using @T c suggestion for reading the VIN with DPS at the beginning when ECM is powered on. That worked, and I can read the VIN with DPS in the 2021 global-B Chevy Onix ECM. The Onix doesn't have a separate gateway module like some of the other GM vehicles, I think the Onix gateway module is combined in its BCM. My BCM seems faulty, so I couldn't test with both modules fully connected. 

I should receive the global-B gateway module sometime this week, hopefully then I'll get the other modules working.

 

 

 

 

GM Techlink article which has some info.

 

As I remember correct, Onix is GEM platform. It is semi Global B.

On 3/27/2023 at 3:51 AM, _mrv_ said:

As I remember correct, Onix is GEM platform. It is semi Global B.

What is the difference between GEM and Global B platforms?

As far as I understand GEM is easy and cheaper then Global B. I don't have access to GEM vehicle yet.

GM GEM Platform

GEM, short for Global Emerging Markets, is a General Motors vehicle architecture designed to support entry-level passenger cars and crossover utility vehicles for developing markets.

 

Predecessor:    GM Gamma platform    GM-PATAC K platform 

 

Vehicle Application

Chevrolet:    Onix, Prisma, Cobalt, new 5-passenger CUV, Spin, Sail, Cavalier, Lova RV
Buick:    Excelle sedan, Excelle wagon, new 5-passenger CUV, GL6
 

Hello! can you tell me how to work with Global B which settings to choose in dps correctly? and is an internet connection required ? working with chevrolet tracker 2

On 4/4/2023 at 5:40 PM, sanchouz said:

Hello! can you tell me how to work with Global B which settings to choose in dps correctly? and is an internet connection required ? working with chevrolet tracker 2

 

For programming Global-B with DPS. You need.

1. A genuine GM MDI2 diagnostic interface.

2. A legit Online DPS that has a valid security validation certificate. Or generate the 12-byte seed key elsewhere. ( The normal Cracked DPS will not generate the 12-byte global-B seed keys) 

3. Select global-B in the DPS settings tab.