Autel GM Security Verification Code Calculation Guide

In this article, we’ll show you how to calculate GM Security Verification Code by Autel IM508/IM608.


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


Version Requirement

GM IMMO program higher than v3.61



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 gets from Autel or a third party. Press ok.


5. Send the BCM application code and VIN to Autelor a third party to get obtain BCM security verification code.


6. Enter the BCM security verification code which gets 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.

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Done! That’s the process of GM Security Verification Code Calculation.

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