Replace and Program Control Module or Reprogram Control Module
WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
To program a replacement or an 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 K38A Chassis Control Module-Auxiliary - Programming and follow the on-screen instructions.
- Clear DTCs.
- With a scan tool, perform the Suspension Sensor Trim Height Calibration, if applicable.