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Unsuccessful Programming Recovery

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Sierra 3500 HD, 2018 GMC Sierra 2500 HD, 2018 GMC Sierra 1500, 2018 Chevrolet Silverado 3500 HD, and 2018 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

If programming a control module is not successful, perform the following procedure:

  1. Ignition ON. Ensure the control module, DLC and programming tool connections are secure and the SPS software is up to date.
  2. Attempt to reprogram the ECU.
    • If the programming is not successful 
    1. Ignition OFF for 1 minute, ignition ON.
    2. Attempt to reprogram the ECU.
      • If the programming is not successful - Replace the component: K114B Hybrid/EV Powertrain Control Module 2
      • If the programming is successful
    3. All OK.
    • Go to next step: If the programming is successful 
  3. All OK.
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