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HOMESERVICE MANUALSGMC2016SIERRA 3500 HD SLE, 4D CAB CHASSIS, 6.6L ENG VIN 8, 4WDREPAIR AND DIAGNOSISGENERAL INFORMATIONRESET PROCEDURESPROGRAMMING AND SETUP - ALL SYSTEMSREPAIR INSTRUCTIONSK20 ENGINE CONTROL MODULE: PROGRAMMING AND SETUPUNSUCCESSFUL PROGRAMMING RECOVERY
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WD

Unsuccessful Programming Recovery

2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WDSECTION Unsuccessful Programming Recovery

In the event of an interrupted or unsuccessful programming event, perform the following:

  1. Ignition ON. Ensure the control module, DLC, and programming tool connections are secure and the SPS software is up to date.
  2. Reprogram the control module following the on-screen instructions.
    • If the control module cannot be reprogrammed 
    1. Ignition OFF, disconnect the MDI, and exit SPS.
    2. Ignition ON, reconnect the MDI, and access SPS.
    3. Reprogram the control module following the on-screen instructions.
      • If the control module cannot be reprogrammed 
      1. Ignition OFF, disconnect the MDI, and exit SPS.
      2. Disconnect vehicle battery for 2 minutes. Reconnect battery.
      3. Ignition ON, reconnect the MDI, and access SPS.
      4. Reprogram the control module following the on-screen instructions.
    • If the control module cannot be reprogrammed 

      Replace the K20 Engine Control Module.

    • If the control module can be reprogrammed 
  3. 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.