Unsuccessful Programming Recovery

2025 Chevrolet Tahoe PPV, 4WDSECTION Unsuccessful Programming Recovery

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. Perform the SPS function: K69 Transfer Case Control Module - Programming

    Verify the control module programming is successful.

    • If the programming is not successful 
    1. Disconnect the battery.
    2. Wait 60 s before proceeding to the next step.
    3. Connect the battery.
    4. Perform the SPS function: K69 Transfer Case Control Module - Programming
      • If the programming is not successful - Replace the component: K69 Transfer Case Control Module
      • Go to next step: If the programming is successful
    5. Select Serial Data Authentication Configuration button (located to the left of the SPS supported controllers list or to the bottom right of the Techline Connect) and follow the on-screen instructions.
    6. Perform the SPS function: K69 Transfer Case Control Module - Setup
      • If the programming is not successful - Replace the component: A16 Transfer Case Four Wheel Drive Actuator

        Perform the SPS function: K69 Transfer Case Control Module - Setup

      • Go to next step: If the procedure was successful
    7. Perform the scan tool function: Range Actuator Learn

      Refer to: Transfer Case Range Actuator Learn

    8. All OK.
    • Go to next step: If the programming is successful 
  3. Select Serial Data Authentication Configuration button (located to the left of the SPS supported controllers list or to the bottom right of the Techline Connect) and follow the on-screen instructions.
  4. Perform the SPS function: K69 Transfer Case Control Module - Setup
  5. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to No.
  6. Perform the scan tool function: Range Actuator Learn

    Refer to: Transfer Case Range Actuator Learn

  7. 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.