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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. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
    • If the programming is not successful 
    1. Turn the ignition OFF for at least 1 minute.
    2. Turn the ignition ON and attempt to reprogram the ECU.
      • If the programming is not successful - Replace the component: K59 Starter/Generator Control Module
      • If the programming is successful
    3. All OK.
    • Go to next step: If the programming is successful 
  3. All OK.
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