Buick theft deterrent module Relearning?

This query was asked for Buick Century car model./
After replacing the theft deterrent module( TDM) it has to be relearned.
Below is the relearn 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 password XXXXX the next ignition switch transition from OFF to CRANK).

Important: The vehicle learns the password , 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 password).
With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).

This is the procedure.It will help you.

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