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HOMESERVICE MANUALSBUICK2018REGAL BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 14 (PROGRAMMING AND SETUP)REPAIR INSTRUCTIONSK20 ENGINE CONTROL MODULE: PROGRAMMING AND SETUPUNSUCCESSFUL PROGRAMMING RECOVERY
2018 Buick Regal Base

Unsuccessful Programming Recovery

2018 Buick Regal BaseSECTION Unsuccessful Programming Recovery
WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. 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. Verify the control module, data link connector and programming tool connections are secure and the tool software is up to date.
  2. Ignition - On/Vehicle - In Service Mode
  3. Perform one of the following SPS Programming functions:
    NOTE:

    If both controller options below are listed, select K20/K71 Engine and Transmission Control Modules.

    • K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
    • K20 Engine Control Module and follow on-screen instructions.
  4. Verify the control module programming is successful.
    • If the programming is not successful 
    1. Ignition/Vehicle - Off - For greater than 1 min
    2. Ignition - On/Vehicle - In Service Mode
    3. Perform one of the following SPS Programming functions:
      NOTE:

      If both controller options below are listed, select K20/K71 Engine and Transmission Control Modules.

      • K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
      • K20 Engine Control Module and follow on-screen instructions.
      • If the programming is not successful - Replace the appropriate component: K20 Engine Control Module or K71 Transmission Control Module
      • Go to next step: If the programming is successful
    4. All OK.
    • Go to next step: If the programming is successful 
  5. All OK.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.