2001 Chevy Impala Theft Relearn
Security Light Flashes on and off. Car wont start.
Repair done prior = The ignition cylinder will turn but the engine wont start.
I have seen there is a procedure to re-learn the theft system. How do i
relearn codes so car will run.
tip/donation yes
GM tech JK
question = The ignition was changed to allow the key to turn. Now it
turns but will not start up and the Security Light Flashes. Looking for
step by step instruction on how to reset the Security Codes which will
allow the car to start. No other problems just the security wont let the
car start up.
JK:
Thank you for the tip/donation. Here is the procedure you requested.....
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 needed (history DTCs will self clear
after 100 ignition cycles).
Be sure to have a battery charger on the car, as this 30 minute procedure
may drain the battery to a point were it will effect the programming- or
cause a dead battery.
The other way is to have a dealer scanner re-program the system.
Security Light Flashes on and off. Car wont start.
Repair done prior = The ignition cylinder will turn but the engine wont start.
I have seen there is a procedure to re-learn the theft system. How do i
relearn codes so car will run.
tip/donation yes
GM tech JK
question = The ignition was changed to allow the key to turn. Now it
turns but will not start up and the Security Light Flashes. Looking for
step by step instruction on how to reset the Security Codes which will
allow the car to start. No other problems just the security wont let the
car start up.
JK:
Thank you for the tip/donation. Here is the procedure you requested.....
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 needed (history DTCs will self clear
after 100 ignition cycles).
Be sure to have a battery charger on the car, as this 30 minute procedure
may drain the battery to a point were it will effect the programming- or
cause a dead battery.
The other way is to have a dealer scanner re-program the system.
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Theft Learn Procedure 2001 Chevrolet Impala
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