Important: 
|    •  | If replacing the BCM with a GM Service Parts Operations (SPO)  replacement
 part, the module will learn the passkey data code  immediately.       The
 existing PCM however, must learn the new fuel continue  password  when  
   the  BCM is replaced. | 
 
|    •  | If replacing a 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 PCM which has been
previously        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 these procedures after replacing:
10 Minute Learn Procedure
Tools Required
|     •  | Techline terminal with current SPS (Service Programming System)
  software | 
 
- Connect the Tech 2 to the vehicle.
 
- Select "Request Information" under "Service
  Programming".
 
- Disconnect the Tech 2 from the vehicle and connect it to
  a Techline terminal.
 
- On the Techline terminal, select "Theft Module Re-Learn"
  under "Service Programming".
 
- Disconnect the Tech 2 from the Techline terminal and connect
  it to the vehicle.
 
- Turn ON the ignition, with the engine OFF.
 
- Select "VTD Re-Learn" under "Service Programming".
 
- 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 (the vehicle is now ready to relearn the  password
    on the next ignition switch transition   from   OFF to CRANK).
 
- Turn OFF the ignition, and wait 5 seconds.
 
- Start the engine (the vehicle has now learned the password).
 
- With the Tech 2 (scan tool), clear any DTCs.
 
30 Minute 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 password on the next ignition
    switch transition from OFF to    CRANK).
 
Important: The vehicle learns the 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 password).
 
- With a scan tool, clear any DTCs if needed (history DTCs will
  self clear after 100 ignition cycles).