How to Get GM 24 Digit Security Code by Autel IM508 IM608 Team?

How to get the 24 digit code for GM cars ? How to solve if Autel IM608 asks for a 24-digit security verification code for GM full-size new system vehicles with CAN FD protocol?

They have to run a code to get you into programming and the 12 min wait. But it can be done!

Check the Instructions below.

Autel Im608 Gm Body Module Verification Code 1

In July 2021, it was reported that 24-digit security verification code calculation service of GM vehicles 2020-2021 CANFD protocol was not responded in time, so Autel team blocked the menu. But we have been receiving strong request to open this menu again from different Autel MaxiIM IM508/IM608 dealers/customers, so the company decides to open the menu again.In this situation, we need aftersales team to help calculate the 24-digit security verification code and send it to users when user perform this function. The calculation tool can only be placed in Autel China due to some concerns, needs to remotely control Autel China server to calculate this code via Teamviewer.

 

Vehicle Coverage 

Cadillac CT5 2020-2021 Smart Key
Cadillac CT4 2020-2021 Smart Key
GMC Yukon 2021 Smart Key
GMC Sierra 2021 Smart Key
Cadillac Escalade 2021 Smart Key
Chevrolet Tahoe 2021 Smart Key
Chevrolet Silverado 2021 Smart Key
Chevrolet Suburban 2021 Smart Key
GMC Denali 2021 Smart Key
Buick Envision 2020- Smart Key /New type only
Chevrolet Corvette 2021 Smart Key /New type only
Buick Envision 2021 Smart Key

Software Version

GM IMMO program higher than v3.61

 

 

Calculation Procedure:

1. Go to immo menu select the vehicle ….>Keyless system(CANFD) >add key/ all key lost.

Autel Im608 Gm Body Module Verification Code 2

2. Ensure the VCI connected to the CANFD adapter & press the start/stop button once

Autel Im608 Gm Body Module Verification Code 3

Autel Im608 Gm Body Module Verification Code 4

3. Send the ECM application code and VIN to after-sales department or a third party (i.e NASTF ) to get obtain ECM security verification code

Autel Im608 Gm Body Module Verification Code 5

Scan Autel Immobilizer tech support support Wechat QR code here

Contact technical stuff, send application code and VIN to get 24-digit ECM security verification code

Autel Gm Code Technical Support

4. Enter the ECM security verification code which get from after-sales department or a third party. Press ok.

Autel Im608 Gm Body Module Verification Code 6

5. Send the BCM application code and VIN to after-sales department or a third party to get obtain BCM security verification code.

Autel Im608 Gm Body Module Verification Code 7

Scan QR code above to get 24-digit BCM security verification code

6. Enter the BCM security verification code which get from after-sales department or a third party. Press ok.

Autel Im608 Gm Body Module Verification Code 8

7. Finally close the drive door & press ok. It will configure system & process add key/all key lost.

Autel Im608 Gm Body Module Verification Code 9

Autel Im608 Gm Body Module Verification Code 10

Any questions feel free to contact obdii365.com customer service.

 

FYI: obdstar does this right from the tool, still takes a few minutes.

OBDII365