Important:
• When replacing a body control module (BCM) with a 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 Programming and Setup
. • When replacing a BCM with a 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 .
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, turn ON the ignition, with the engine OFF.
- 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.
