Important: When replacing a body control module (BCM) with an GM Service Parts Operation (SPO) replacement part, set up the replacement BCM prior to the 10-Minute Relearn Procedure or the 30-Minute Relearn Procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Programming and Setup.
Important:
• When replacing a BCM with an GM SPO replacement part, the module will learn the keys immediately. The existing powertrain control module (PCM) must learn the new fuel continue password when you replace the BCM. • When replacing a PCM with a GM SPO replacement part, the new PCM will learn the incoming fuel enable password immediately after programming and upon receipt of a password message. A PCM which had been installed in another vehicle would have learned
the fuel enable password of the other vehicle's BCM. Perform either the 10-Minute Relearn Procedure or the 30-Minute Relearn Procedure to learn the fuel enable password of the current vehicle's BCM. • When performing either relearn procedure, all previously learned keys will be erased from the BCM memory. • Additional keys may be learned. Refer to
Adding Keys
.
10-Minute Relearn Procedure
Use this procedure after replacing the following components:
| • | The PASS-Key III (PK3) keys |
| • | The BCM |
| • | The PCM |
- Connect a scan tool to the vehicle.
- Turn ON the ignition, with the engine OFF.
- Insure that all power consuming devices are turned OFF on the vehicle.
- With a scan tool, select Request Info. under Service Programming System and follow the scan tool on-screen instructions.
- Disconnect the scan tool from the vehicle and connect the scan tool to a Techline Terminal with the current Service Programming System (SPS) software.
- On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions.
- Disconnect the scan tool from the Techline Terminal and re-connect the scan tool to the vehicle.
- With a master PASS-Key III key, turn ON the ignition with the engine OFF.
- With a scan tool, select Program ECU under Service Programming System.
- At this point the scan tool must remain connected for the duration of the 10-Minute Relearn Procedure.
- 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 key information and/or the passwords on the next ignition switch transition from OFF to ON.
- Turn OFF the ignition and wait 5 seconds.
- With a master PASS-Key III key, start the vehicle. The BCM has now learned the key transponder information and the PCM has now learned the fuel continue password.
- Turn OFF the ignition and wait 15 seconds minimum.
- With a second master PASS-Key III key, start the vehicle. The BCM has now learned the second master PASS-Key III key transponder information
- With a scan tool, clear any DTCs.
Important: If replacing a BCM with a GM SPO replacement part, perform the procedure to setup a new BCM prior to the 10-Minute Relearn Procedure. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.
Important: Perform this step ONLY on vehicles with EXPORT configured BCMs.
Important: Perform this step ONLY on vehicles with EXPORT configured BCMs.
30-Minute Relearn Procedure
Use this procedure after replacing the following components:
| • | The PASS-Key III (PK3) keys |
| • | The BCM |
| • | The PCM |
- With a master PASS-Key III key, rotate the ignition to the CRANK position.
- Observe the SECURITY telltale. After approximately 10 minutes, the telltale will turn OFF.
- Turn OFF the ignition, and wait 5 seconds.
- Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
- With a master PASS-Key III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.
- With a scan tool, clear any DTCs.
Important: This procedure is not available on vehicles equipped with option code (Z49).
If replacing a BCM with an GM SPO replacement part, perform the procedure to setup a new BCM prior to the 30-Minute Relearn Procedure.Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
