2002 Chevrolet Malibu Owner's Manual - Page 76

Programmable Horn Chirp When you use the remote keyless entry transmitter to lock the doors or use the delayed locking feature, the parking lamps will flash twice. The horn can also chirp to indicate locking by enabling the horn chirp feature. The programmable horn chirp can be disabled by pressing and holding either of the door lock switches in the unlock position for 10 seconds, with the ignition ON and all of the doors closed. When you hear the horn chirp, programming is complete. To reactivate the horn chirp feature, repeat the above procedure. Matching Transmitter(s) to Your Vehicle Each remote keyless entry transmitter is coded to prevent another transmitter from unlocking your vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your dealer. Remember to bring any remaining transmitters with you when you go to your dealer. When the dealer matches the replacement transmitter to your vehicle, any remaining transmitters must also be matched. Once your dealer has coded the new transmitter, the lost transmitter will not unlock your vehicle. Each vehicle can have a maximum of four transmitters matched to it. 2-13