For 1990-2009 cars

Important: Once the remote control door lock 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.

Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry programming/diagnostic mode. This prevents the programming of the transmitters to the incorrect vehicle.

Up to 4 transmitters may be programmed.

### Transmitter Programming Procedure (Method 1 - No Tools Required)

To program the transmitters, perform the following procedure while seated in the vehicle driver's seat:

1. Close all the vehicle doors.
2. Remove the ignition key from the ignition lock cylinder.
3. Press and hold unlock on the door lock switch.

Important: To successfully enter the keyless entry programming/diagnostic mode, steps 4 through 6 must be completed within 25 seconds of pressing the door unlock switch.

4. While holding the door lock switch in the unlock position, insert and remove the ignition key twice. Do not rotate the ignition lock cylinder.
5. 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.
6. Release the door lock switch. The chime will sound three chimes to signal that transmitter programming/diagnostic mode is active.
7. Press and hold the lock and unlock buttons at the same time on the keyless entry transmitter for approximately 4 seconds. The chime will sound two times to signal that the transmitter has been programmed successfully.
8. Repeat step 7 for the rest of the transmitters (for a total of 4 transmitters).
9. To exit the transmitter programming/diagnostic mode perform either of the following:

• | Turn the ignition switch to the RUN position.

• | Remove the ignition key from the ignition switch.

### Transmitter Programming Procedure (Method 2 - Scan Tool Required)

Perform the following steps in order to program the remote control door lock transmitters to the remote control door lock receiver using the scan tool:

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Use the scan tool in order to access the Body Control Module (BCM) Special Function: Program Key Fobs menu.
4. Follow the directions on the scan tool in order to program the transmitters.
5. Operate the transmitter functions in order to verify correct system operation. Refer to Keyless Entry System Operation