Autel GM Security Verification Code Calculation Instruction
the process to get GM security verification code
【Background】
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 team blocked the menu. But we have been receiving strong request to open this menu again from different IM dealers/customers, so 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 to users when user performing 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 Procedures】
1. Select the vehicle type...>>Keyless system(CANFD) >>add key/all key lost
2. Ensure the VCI connected to the CANFD adapter & press the start/stop button once
3. Send the ECM application code and VIN to Autel or a third party to get ECM security verification code
4. Enter the ECM security verification code which get from Autel or a third party. Press ok.
5. Send the BCM application code and VIN to Autel or a third party to get obtain BCM security verification code.
6. Enter the BCM security verification code which get from Autel or a third party. Press ok.
7. Finally close the drive door & press ok. It will configuring system & process add key/all key lost.
