Immobilizer System Component Programming (without RPO BAE)

Immobilizer System Component Programming (without RPO BAE)

Programming Replacement Passlock(TM) Sensor, BCM, or PCM

Note:
* The body control module (BCM) must be programmed with the proper regular production option (RPO) configurations before performing learn procedures. Refer to Body Control Module Programming and Setup (Testing and Inspection).
* If replacing the BCM with a GM Service Parts Operations (SPO) replacement part, the module will learn Passlock(TM) sensor data code immediately. The existing powertrain control module (PCM) however, must learn the new fuel continue password when the BCM is replaced.
* If replacing a PCM with a GM SPO replacement part, after programming, these modules will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password and will require a learn procedure after programming to learn the current vehicle password.

Conditions

Use this procedure after replacing:

* Ignition and Start Switch (Passlock(TM) Sensor)
* BCM
* PCM

Learn Procedures

There are 2 available methods to perform the programming procedure:

* A 10-minute procedure which requires a scan tool and a Techline Terminal.
* A 30-minute procedure which does not require the use of any tools.

10-Minute Learn Procedure

Tools Required
* Scan Tool
* Techline Terminal with current Service Programming System (SPS) software

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

Note:
* The Techline Terminal will initially display 12 Minutes. The first 2 minutes allow the Techline Terminal 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.

6. Observe the Techline Terminal, after approximately 12 minutes the Techline Terminal 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.
7. Turn OFF the ignition and wait 2 minutes.
8. 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.
9. With a scan tool, clear any DTCs.

30-Minute Learn Procedure

Turn ON the ignition, with the engine OFF.

1. Attempt to start the engine, then release the key to ON, vehicle will not start.
2. Observe the SECURITY telltale. After approximately 10 minutes, the telltale will turn OFF.
3. Turn OFF the ignition, and wait 5 seconds.
4. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.

Note: The vehicle learns the Passlock(TM) Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

5. Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password.
6. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.