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Home >> Buick >> 2001 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Analog Instrument Panels >> Programming >> Powertrain Control Module Programming >> Off-Board Programming
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Off-Board Programming

  1. Obtain Vehicle Identification Number (VIN) of vehicle for which Powertrain Control Module (PCM) is being programmed.
  2. With Techline terminal, select SERVICE PROGRAMMING.
  3. Select Tech 2 scan tool, Reprogram ECU, and Off-Board Programming Adapter as ECU location.
  4. Connect PCM, Off-Board Programming Adapter, and Tech 2 scan tool as described on Techline terminal. Ensure that correct harness connector from Off-Board Programming Adapter kit is used.
  5. Using Tech 2 scan tool, select SERVICE PROGRAMMING REQUEST INFORMATION function. Tech 2 scan tool communicates with PCM and receives access code.
  6. With Tech 2 scan tool, exit SERVICE PROGRAMMING REQUEST INFORMATION.
  7. Disconnect Tech 2 scan tool from Off-Board Programming Adapter.
  8. Connect Tech 2 scan tool to Techline terminal.
  9. Turn on Tech 2 scan tool.
  10. With Techline terminal, enter VIN of vehicle that will be receiving PCM.
  11. Techline terminal will display message, attaching to database.
  12. Identify what type of programming that you are performing.
  13. Select appropriate calibration file.
  14. Ensure all connections are secure.
  15. Techline terminal displays a summary screen that summarizes selections. After confirming choices, Techline terminal automatically loads calibration files to Tech 2 scan tool.
  16. After download is complete, turn off Tech 2 scan tool.
  17. Disconnect Tech 2 scan tool from Techline terminal.
  18. Connect Tech 2 scan tool to Off-Board Programming Adapter.
  19. Using Tech 2 scan tool, select SERVICE PROGRAMMING.
    20. CAUTION: DO NOT turn off Off-Board Programming Adapter if programming procedure is interrupted or unsuccessful. Ensure PCM and Off-Board Programming Adapter connections are secure and Techline operating software is up to date. Attempt to reprogram PCM. If PCM cannot be programmed, replace PCM. See POWERTRAIN CONTROL MODULE  under REMOVAL & INSTALLATION.
  20. Using Tech 2 scan tool, select PROGRAM.
  21. After download is complete, exit SERVICE PROGRAMMING.
  22. Turn off Off-Board Programming Adapter.
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