Controller Authorization Code

Customers tuning 2017+ GM vehicles may purchase a Controller Authorization Code to negotiate controller security prior to reading or flashing their controller.

A controller auth-code is a 24 character code split into 6 x 4-character sections.
e.g. ZKWS-6Y95-Q8ND-T23K-4XSX-PQK8

US$50.00
Availability: In stock
SKU
EFI-AUT-COD

Maximum 30 characters

Maximum number of characters: 12

Maximum number of characters: 20

In 2017 GM began modernizing and hardening their controllers’ security negotiations which is now far more complex and virtually impossible to automate within the EFILive software. That means the end user must now concern themselves with the security negotiations prior to reading or flashing one of these controllers. Specifically the end user must provide the response (the key) to the controller’s challenge (the seed).

The seed and key are managed by the dedicated Authorization module contained in the EFILive V8 Tune Tool.

A controller auth-code is a 24 character code split into 6 x 4-character sections e.g. ZKWS-6Y95-Q8ND-T23K-4XSX-PQK8

Automated auth-code processing occurs within approximately 20 minutes of correct order placement.