Reprogram Control Module

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

To reprogram an existing control module, perform the following procedure:

Install EL-49642 SPS Programming Support Tool.
Access the Service Programming System (SPS) and follow the on-screen instructions.
On the SPS Supported Controllers screen, select K47 Rear Differential Clutch Control Module - Programming and follow the on-screen instructions.
On the SPS Supported Controllers screen, select K47 Rear Differential Clutch Control Module - Setup and follow the on-screen instructions.
NOTE:
RPO G99 = Twin Clutch System
At the end of programming, choose the "Clear All DTCs" function on the SPS screen.