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Reprogram ECU (UDV or UHS)

WARNING: This page is about a different car, the 2024 Chevrolet Silverado 3500 HD and 2024 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

To program a replacement or an existing ECU, perform the following procedure:

  1. Ignition ON/Vehicle in Service Mode.
    2. NOTE:

    Ensure programming of this module is performed using the EL-52100 (MDI 2). Using the EL-47955 (MDI) will result in a programming failure.

  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. Ignition/Vehicle OFF.
  4. On the SPS Supported Controllers screen, select P16 Instrument Cluster - Graphics Programming and follow the on-screen instructions.
  5. On the SPS Supported Controllers screen, select P16 Instrument Cluster - Programming and follow the on-screen instructions.
    6. NOTE:

    If Ethernet programming fails, ensure Instrument Cluster is communicating over ethernet properly. Refer to Scan Tool Does Not Communicate with Vehicle

  7. Clear DTCs.
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