Programming Theft Deterrent System Components

Programming Theft Deterrent System Components

Note: To confirm if the vehicle has an immobilizer system, please check the vehicle SPID label or the VIN in GMVIS for the presence of RPO BAH (engine immobilizer).

Note: Turn ON the ignition before installing in the scan tool. Failure to connect in this procedure may cause communication errors and the programming procedure will not complete. Any keys that are not programmed at this time will no longer function.

Note: Try to obtain all the keys. At least 2 keys are necessary to successfully program the immobilizer system.

A maximum of 5 keys may be programmed.

Conditions

Use these procedures after replacing:

* Theft deterrent module (Immobilizer)
* Engine control module (ECM)
* Any key

Immobilizer Programming Procedure - LMU, LXT

1. Turn the ignition switch to the ON position.
2. Install the scan tool.
3. Select IMMOBILIZER KEY PROGRAMMING from the Module Setup menu under the Immobilizer section.
4. Follow the scan tool instructions with each key until all keys are programmed.
5. Turn the ignition to the LOCK position, disconnect the scan tool and test all the keys.
6. If any key does not function, perform this procedure again with all keys.
7. If any key does not accept the programming, replace it with a new key and perform this procedure again with all the keys.

Immobilizer Programming Procedure - LXV

This procedure will learn the data between the theft deterrent module and the ECM after replacing either the theft deterrent module or the ECM. Refer to Service Programming System (SPS) (Service Programming System (SPS)).