Replace and Program Control Module or Reprogram Control Module
WARNING: This page is about a different car, the 2020 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
To program a replacement or an existing K56 Serial Data Gateway Module, perform the following procedure:
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select K56A Serial Data Gateway Module Processor 1 - Programming and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select K56B Serial Data Gateway Module Processor 2 - Programming and follow the on-screen instructions.
- Clear DTCs.
NOTE:
When programming K56 Serial Data Gateway Module, both processor 1 and processor 2 need to be updated. After programming processor 1, re-enter SPS and program processor 2.