2005 Chevrolet Impala Owner's Manual - Page 175

HORN ONLY: The horn will sound when you press the lock button on the remote keyless entry transmitter. HORN & LIGHTS ON (default): The exterior lamps will flash when you press the lock button on the remote keyless entry transmitter, and the horn will sound when the lock button is pressed again within five seconds of the previous command. NO CHANGE: No change will be made to this feature. The current setting will remain. Select one of the available choices and press the set/reset button while it is displayed on the DIC to select it. Press the customization button until REMOTE DOOR UNLOCK appears on the DIC display. Press the set/reset button to access the settings for this feature. Then press the customization button to scroll through the following choices: LIGHTS OFF: The exterior lamps will not flash when you press the unlock button on the remote keyless entry transmitter. LIGHTS ON (default): The exterior lamps will flash when you press the unlock button on the remote keyless entry transmitter. NO CHANGE: No change will be made to this feature. The current setting will remain. Select one of the available choices and press the set/reset button while it is displayed on the DIC to select it. REMOTE DOOR UNLOCK This feature allows you to select the type of feedback you will receive when unlocking the vehicle with the remote keyless entry transmitter. You will not receive feedback when unlocking the vehicle with the remote keyless entry transmitter if the doors are open. See Remote Keyless Entry System Operation on page 2-4 for more information. EXIT LIGHTING If it is dark enough outside, this feature allows you to select the amount of time you want the exterior lamps to remain on. This happens after the vehicle is unlocked using the remote keyless entry transmitter or if the vehicle key is turned to OFF from RUN. 3-55