1997 Buick LeSabre

1997 Keyless Entry Remote Fob

Important Notice: This vehicle supports onboard programming for remote keyless entry fobs using a manual sequence. No diagnostic tools are required. These steps apply only to remote fobs used for locking and unlocking the doors. This procedure does not program ignition or transponder keys.

Programming Procedure:

  • Step 1: Sit in the driver's seat and ensure that all doors are fully closed. Have all remotes you wish to program with you before beginning.
  • Step 2: Insert the vehicle’s key into the ignition. Leave it in the OFF position. Do not start or turn the key at this point.
  • Step 3: Locate the Data Link Connector (DLC) beneath the dashboard on the driver’s side. The DLC is rectangular in shape and is wider at the top. This orientation will help you correctly identify terminal positions.
  • Step 4: Identify terminals 8 and 4 on the connector. Although the terminals are not labeled, you can determine their positions based on the connector’s shape and layout. Make sure both terminals contain visible metal pins.
  • Step 5: Use a small jumper wire to connect terminal 8 to terminal 4. Leave the wire in place during the entire programming sequence. When connected properly, the vehicle’s door locks will automatically cycle (lock and unlock), indicating that it has entered programming mode.
  • Step 6: Confirm that all doors remain closed before proceeding further.
  • Step 7: Turn the key to the ON position, which is one click before engine start. Do not start the engine. The doors will lock again, confirming the system is ready to receive remote signals.
  • Step 8: On the first remote, press and hold the LOCK and UNLOCK buttons at the same time. Hold both buttons for about 15 seconds. Once the door locks cycle again, release the buttons. This indicates the remote has been successfully programmed.
  • Step 9: To add more remotes, repeat Step 8 for each one. Begin programming each additional remote within 60 seconds of the last one.
  • Step 10: Once all remotes have been programmed, turn the ignition key to the OFF position.
  • Step 11: Remove the jumper wire from the DLC to exit programming mode.
  • Step 12: Test each remote to verify that all functions—such as locking and unlocking—are working correctly.

Additional Considerations:

Remote Capacity: The system typically allows up to four remotes to be programmed.

Check Battery Power: Weak batteries can cause remotes to fail during programming. Ensure all remotes are powered and functional.

Ignition Key Excluded: This method does not support programming ignition keys or transponder systems.

Start Over if Needed: If the locks do not respond at any point, restart the process from Step 1.