Reprogram Control Module

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

To program an existing K56 Serial Data Gateway Module, perform the following procedure:

NOTE:

Verify all modules are connected and communicating before attempting to program the K56 Serial Data Gateway Module.

Ignition/Vehicle OFF.
Access the Service Programming System (SPS) and follow the on-screen instructions.
On the SPS Supported Controllers screen, select K56 Serial Data Gateway Module - Programming and follow the on-screen instructions.
Clear DTCs.