GM Service Manual Online
For 1990-2009 cars only

Immobilizer System Component Programming Canada

10-Minute Immobilizer Relearn

This 10-minute relearn procedure will relearn the fuel enable password between the body control module (BCM) and the engine control module/powertrain control module (ECM/PCM).

  1. Connect a scan tool to the vehicle in the pass-thru arrangement.
  2. Turn ON the ignition, with the engine OFF.
  3. Ensure that all power consuming devices are turned OFF on the vehicle.
  4. On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions, using the Legacy Pass-Thru method. Ensure the correct programming selection is chosen based on component being replaced or programmed. For this procedure, go to the V.T.D. Vehicle Theft Deterrent Learn menu and choose the Vehicle Theft Deterrent Learn for Powertrain System selection.
  5. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.
  6. Important: 

       • The scan tool will initially display 12 Minutes. The first 2 minutes allow the scan tool to initialize the appropriate control module. The remaining 10 minutes is the relearn timer.
       • On some vehicles the security indicator may be illuminated for the duration of the 10-minute relearn procedure.

  7. Observe the scan tool. After approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition". The vehicle is now ready to relearn the password on the next ignition switch transition from OFF to CRANK.
  8. Turn OFF the ignition and wait 2 minutes.
  9. With a master vehicle key, turn the ignition to the RUN position for 15 seconds, then start the vehicle. The ECM/PCM has now relearned the fuel enable password.
  10. With a scan tool, clear any DTCs.

Immobilizer System Component Programming North America except Canada

10-Minute Immobilizer Relearn

This 10-minute relearn procedure will relearn the fuel enable password between the body control module (BCM) and the engine control module/powertrain control module (ECM/PCM).

  1. Connect a scan tool between the vehicle and the Techline Terminal for the pass-thru programming method.
  2. Turn ON the ignition, with the engine OFF.
  3. Ensure that all power consuming devices are turned OFF on the vehicle.
  4. On the Techline Terminal, select pass-thru programming, build the vehicle, and follow the on-screen instructions.
  5. Ensure the correct programming selection is chosen based on component being replaced or programmed. For this procedure, go to the V.T.D. Vehicle Theft Deterrent Learn menu and choose the Vehicle Theft Deterrent Learn for Powertrain System selection.
  6. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.
  7. Important: 

       • The scan tool will initially display 12 Minutes. The first 2 minutes allow the scan tool to initialize the appropriate control module. The remaining 10 minutes is the relearn timer.
       • On some vehicles the security indicator may be illuminated for the duration of the 10-minute relearn procedure.

  8. Observe the scan tool. After approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition". The vehicle is now ready to relearn the password on the next ignition switch transition from OFF to CRANK.
  9. Turn OFF the ignition and wait 2 minutes.
  10. With a master vehicle key, turn the ignition to the RUN position for 15 seconds, then start the vehicle. The ECM/PCM has now relearned the fuel enable password.
  11. With a scan tool, clear any DTCs.

30-Minute Immobilizer Relearn

This 30-minute relearn procedure will relearn the fuel enable password between the body control module (BCM) and the engine control module/powertrain control module (ECM/PCM).

  1. With a master vehicle key, turn ON the ignition, with the engine OFF.
  2. Observe the security indicator. After approximately 10 minutes, the telltale will turn OFF.
  3. Turn OFF the ignition, and wait 5 seconds.
  4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
  5. Important: The vehicle learns the fuel enable passwords on the ignition switch transition from OFF to RUN. You must turn the ignition OFF before attempting to start the vehicle.

  6. With a master vehicle key, start the vehicle. The vehicle has now learned the ECM/PCM has now learned the fuel enable password.
  7. If additional keys are required to be learned, refer to Adding Keys .
  8. With a scan tool, clear any DTCs.