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Home >> Buick >> 2001 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Modules >> 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, Reprogram ECU, and Off-Board Programming Adapter as ECU location.
  4. Connect PCM, Off-Board Programming Adapter, and Tech 2 as described on Techline terminal. Ensure that correct harness connector from Off-Board Programming Adapter kit is used.
  5. Using Tech 2, select SERVICE PROGRAMMING REQUEST INFORMATION function. Tech 2 communicates with PCM and receives access code.
  6. With Tech 2, exit SERVICE PROGRAMMING REQUEST INFORMATION.
  7. Disconnect Tech 2 from Off-Board Programming Adapter.
  8. Connect Tech 2 to Techline terminal.
  9. Turn on Tech 2.
  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.
  16. After download is complete, turn off Tech 2.
  17. Disconnect Tech 2 from Techline terminal.
  18. Connect Tech 2 to Off-Board Programming Adapter.
  19. Using Tech 2, select SERVICE PROGRAMMING.
    20. WARNING: DO NOT turn off the 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, select PROGRAM.
  21. After download is complete, exit SERVICE PROGRAMMING.
  22. Turn off the Off-Board Programming Adapter.
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