Programming Replacement Passlock™ Sensor, BCM, or VCM/PCM
Important:
| • | If replacing the BCM with a GM Service Parts Operations (SPO)
replacement part, the module will learn passlock™ sensor data code immediately.
The existing VCM/PCM however, must learn the new fuel continue password
when the BCM is replaced. |
| • | If replacing a VCM/PCM with a GM Service Parts Operations (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 VCM/PCM which
has been previousely 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's password. |
Conditions
Use this procedure after replacing:
30 Minute Re-Learn Procedure
- Turn ON the ignition, with the engine OFF.
- Attempt to start the engine, then release the key to ON (vehicle
will not start).
- Observe the SECURITY telltale, after approximately 10 minutes
the telltale will turn OFF.
- Turn OFF the ignition, and wait 5 seconds.
- 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).
Important: The vehicle learns the Passlock™ 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.
- Start the engine (the vehicle has now learned the Passlock™ Sensor
Data Code and/or password).
- With a scan tool, clear any DTCs if desired (history
DTCs will self clear after 100 ignition cycles).
