(Without F45) K26 Headlamp Control Module Programming

WARNING: This page is about a different car, the 2022 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.

To program a replacement or existing control module, perform the following procedure:

Access the Service Programming System (SPS) and follow the on-screen instructions.
On the SPS Supported Controllers screen, select K26 Headlamp Control Module - Programming and follow the on-screen instructions.
On the SPS Supported Controllers screen, select K26 Headlamp Control Module - Setup while following the on-screen instructions.
Clear DTCs.