In the event that a transmitter is lost, program the old and the new transmitters into the memory of the remote control door lock receiver. Up to 4 transmitters may be programmed.

Important: Once the keyless entry receiver enters the programming/diagnostic mode, the programming of the first transmitter erases all previous transmitter programming information. You must then program all of the transmitters.

1. Sit in the driver's seat.
2. Remove the ignition key from the ignition lock cylinder.
3. Close all the vehicle doors.
4. Press and hold unlock on the door lock switch.
5. While holding the door lock switch in the unlock position, insert and remove the ignition key twice. Do not rotate the ignition lock cylinder.
6. Insert the ignition key a third time leaving the key in the ignition lock cylinder. The ignition must remain in the LOCK position for the rest of the procedure.
7. Release the door lock switch. You will hear three chimes. This chime feedback indicates that transmitter programming is active.
8. Press and hold the lock and unlock buttons at the same time on the keyless entry transmitter for 12 seconds. You will hear three chimes. This chime feedback indicates that the transmitter has been programmed successfully.
9. Repeat step 8 for the rest of the transmitters (for a total of 4 transmitters).
10. Exit this procedure by removing the ignition key from the ignition lock cylinder.

In the event that a transmitter is lost, program the old and the new transmitters into the memory of the remote control door lock receiver. Up to 4 transmitters may be programmed.

Important: Once the keyless entry receiver enters the programming/diagnostic mode, the programming of the first transmitter erases all previous transmitter programming information. You must then program all of the transmitters.

The following procedure describes how to program the remote control door lock transmitters to the remote control door lock receiver using the Tech 2®.

Perform the following steps:

1. Connect the scan tool to the following components:

•	An applicable power source

•	The vehicle data link connector (DLC)

2. Turn the ignition ON.
3. At the application menu screen, select F0 (body control module).
4. At the body control module screen, select F2 (special functions).
5. At the special functions menu screen, select F3 (program key fobs).
6. Follow the directions on the scan tool display in order to program the transmitters.
7. Press EXIT repeatedly until you view the application menu screen.
8. Disconnect the scan tool from the following components:

•	The accessory power port

•	The vehicle DLC

9. Validate that all the transmitters that were programmed operate properly. Refer to Keyless Entry System Operation .