LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2001 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Modules >> Programming >> Powertrain Control Module Programming >> Remote Programming
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remote Programming

  1. Turn ignition switch to OFF position.
  2. Connect Tech 2 to Data Link Connector (DLC). DLC is located on lower left side of instrument panel.
  3. Turn ignition switch to ON position.
  4. Turn off all vehicle accessories.
  5. Using Tech 2, select SERVICE PROGRAMMING.
  6. Identify vehicle information as requested by Tech 2.
  7. Select type of module to be programmed.
  8. Select type of programming to be performed.
  9. Verify displayed Vehicle Identification Number (VIN) with vehicle VIN. If displayed VIN does not match actual VIN, write down actual VIN and correct VIN at Techline terminal.
  10. When complete, exit Service Programming.
  11. Turn off Tech 2 and disconnect Tech 2 from vehicle.
  12. Turn ignition switch to OFF position.
  13. Connect Tech 2 to Techline terminal.
  14. Select SERVICE PROGRAMMING.
  15. Select Tech 2 (if available) as Tech 2 being used
  16. Select type of programming to be performed.
  17. Verify displayed VIN with vehicle VIN. Correct VIN as necessary.
  18. Select type of module to be programmed.
  19. Identify type of programming to be performed from the following:
    • NORMAL. This type of programming is for updating an existing calibration or programming a new controller.
      • NOTE: Techline Customer Support center will need to be contacted to use this option.
    • VEHICLE CONFIGURATION INDEX (VCI). This selection is used if vehicle VIN is unavailable or not recognized by Techline terminal.
    • RECONFIGURE. This selection is used to reconfigure a vehicle, such as tire size and axle ratio changes.
  20. Select appropriate calibration file.
  21. Ensure all connections are secure.
  22. Select REPROG to initiate download of new calibration to Tech 2.
  23. After download is complete, turn off Tech 2.
  24. Disconnect Tech 2 from Techline terminal.
  25. Connect Tech 2 to DLC.
  26. Turn on Tech 2.
  27. Turn ignition switch to RUN position.
  28. Select SERVICE PROGRAMMING.
    29. WARNING: DO NOT turn ignition switch to OFF position if programming procedure is interrupted or unsuccessful. Ensure all PCM and DLC 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.
  29. Select Program.
  30. After download is complete, exit SERVICE PROGRAMMING.
  31. Turn ignition switch to OFF position for 30 seconds.
  32. Turn off Tech 2.
  33. If a PCM is replaced, the following service procedures must be performed:
    • Crankshaft Position (CKP) system variation learn procedure. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.
    • Oil life system resetting.
    • Inspection/Maintenance (I/M) complete system set procedure. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
    • Programming theft deterrent components. See PROGRAMMING THEFT DETERRENT COMPONENTS  .
scientia non olet · About LEMON Manuals