For 1990-2009 cars

Important:

• | If replacing a theft deterrent controller module with a GM Service Parts Operation (SPO) replacement part, the module will learn keys immediately. The existing PCM however, must learn the new fuel continue password when the theft deterrent controller module is replaced.

• | If replacing a PCM with a GM 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 in order to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicles fuel continue password and will require a learn procedure after programming in order to learn the current vehicle's password.

• | When performing the 10 minute or the 30 minute re-learn procedures, all previously learned keys will be erased from the VTD module's memory.

• | Additional keys may be learned immediately after the 10 minute or 30 minute re-learn procedure by inserting the additional key to be learned and turning the ignition to the RUN position within 10 seconds of removing the previously learned key.

### 10 Minute Re-Learn Procedure - Export and Domestic Vehicles

Use this procedure after replacing any of the following components:

• | The keys/lock cylinders

• | The theft deterrent controller module

• | The PCM if necessary, refer to the Important statement above

#### Tools Required

• | Tech 2 Diagnostic Tool

• | Techline Terminal with current service programing system (SPS) software

1. Connect the Tech 2 Diagnostic tool.
2. Select Request Information under Service Programing.
3. Disconnect the Tech 2 from the vehicle and connect the Tech 2 to a Techline Terminal.
4. On the Techline Terminal, select Theft Module Re-Learn under Service Programming.
5. Disconnect the Tech 2 from the Techline Terminal and re-connect the Tech 2 to the vehicle.
6. Turn ON the ignition, with the engine OFF, using a master Pass-Key® III key (black).
7. Select VTD Re-Learn under Service Programming.
8. At this point the Tech 2 must remain connected for the duration of the 10 minute re-learn period.
9. Observe the security telltale. After approximately 10 minutes the telltale will turn off. The vehicle is now ready to re-learn the key information and passwords on the next ignition switch transition from OFF to CRANK.
10. Turn OFF the ignition and wait 5 seconds.
11. Start the vehicle. The scan tool has now learned the key and password information.
12. Clear any DTCs using the scan tool.

### 30 Minute Re-Learn Procedure - Domestic Vehicles Only

Use this procedure after replacing any of the following components:

• | The keys/lock cylinders

• | The theft deterrent controller module

• | The PCM if necessary, refer to the Important statements above

1. Turn ON the ignition, with the engine OFF, using a master Pass-Key® III key (black).
2. Observe the security telltale. After approximately 10 minutes the telltale will turn off.
3. Turn OFF the ignition, and wait 5 seconds.
4. Repeat step 1-3 two more times, for a total of 3 cycles or 30 minutes.

Important: The vehicle learns the key information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

5. Start the vehicle. The vehicle has now learned the key and password information.
6. Clear any DTCs using the scan tool.

### Quick Learn Procedure - Keys Only - Domestic Vehicles Only

Important:

• | Additional master theft deterrent controller keys (black) or valet keys (gray) may be added, up to 10 keys, using this procedure when there is an available learned master theft deterrent controller key (black).

• | This procedure adds keys only. This procedure does not erase previously learned keys.

• | The keys to be learned must duplicate the mechanical cut of the current key.

1. With a previously learned master theft deterrent controller key (black), turn ON the ignition, with the engine OFF.
2. Turn OFF the ignition and remove the key.
3. Within 10 seconds, insert the key to be learned (black or gray) and turn ON the ignition, with the engine OFF. The vehicle has now learned the new key.