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Home >> Chevrolet >> 2021 >> Bolt EV Premier >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Programming And Setup) >> Repair Instructions >> K114B Hybrid/EV Powertrain Control Module 2: Programming and Setup >> Unsuccessful Programming Recovery
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Unsuccessful Programming Recovery

WARNING: This page is about a different car, the 2020 Chevrolet Bolt EV. 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 ECU.
      • Go to next step: If the programming is successful
    3. All OK.
    • Go to next step: If the programming is successful 
  3. All OK.
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