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Programming Theft Deterrent System Components

WARNING: This page is about a different car, the 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Due to component variability, the Vehicle Theft Deterrent (VTD) system must have the learn procedure performed regardless, if vehicle starts on the first ignition cycle after a VTD repair. All codes in the theft deterrent module must be cleared for a relearn.
NOTE: The BCM must be programmed with proper RPO configurations before performing learn procedures. If replacing BCM with a GM Service Parts Operations (SPO) replacement part, the module will learn Passlock(tm) sensor data code immediately. The existing PCM however, must learn the new fuel continue password when BCM is replaced.
NOTE: If replacing a PCM with a replacement part, after programming, these modules will learn 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 current vehicle's password.

Use these procedures after replacing:

10-Minute Learn Procedure 

NOTE: This procedure requires a Tech 2 scan tool and a Techline(tm) terminal with current Service Programming System (SPS) software.
  1. Connect Tech 2 to vehicle.
  2. Select "Request Information" under "Service Programming".
  3. Disconnect Tech 2 from vehicle and connect it to a Techline(tm) terminal.
  4. On the Techline(tm) terminal, select "Theft Module Re-Learn" under "Service Programming".
  5. Disconnect the Tech 2 from the Techline(tm) terminal and connect it to the vehicle.
  6. Turn ON ignition, with engine OFF.
  7. Select "VTD Re-Learn" under "Service Programming".
  8. Attempt to start engine, then release key to ON. The vehicle will not start.
  9. Observe the SECURITY indicator light, after about 10 minutes the indicator light will turn OFF. The vehicle is now ready to relearn the Passlock(tm) Sensor Data Code and/or password on the next ignition switch transition.
  10. Turn ignition off and wait 5 seconds.
  11. Start engine. The vehicle has now learned the password.
  12. With Tech 2 scan tool, clear any DTCs.

30-Minute Learn Procedure 

  1. Turn ignition on, with engine off.
  2. Attempt to start engine, then release key to ON. The vehicle will not start.
  3. Observe the SECURITY telltale, after about 10 minutes the telltale will turn OFF.
  4. Turn OFF ignition and wait 5 seconds.
  5. Repeat step  1 -  4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock(tm) sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
    6. NOTE: The vehicle learns the Passlock(tm) sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn ignition OFF before attempting to start vehicle.
  6. Start engine. The vehicle has now learned the Passlock(tm) sensor Data Code and/or password.
  7. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.
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