2003 Chevrolet Impala Owner's Manual - Page 73

At times you may notice a decrease in range. This is normal for any remote keyless entry system. If the transmitter does not work or if you have to stand closer to your vehicle for the transmitter to work, try this: e Remote Keyless Entry System Operation Using the remote keyless entry transmitter, you can lock and unlock your doors or release your trunk from about 3 feet (1 m) up to 30 feet (9 m) away. Check the distance. You may be too far from your vehicle. You may need to stand closer during rainy or snowy weather. Check the location. Other vehicles or objects may be blocking the signal. Take a few steps to the left or right, hold the transmitter higher, and try again. Check to determine if battery replacement or resynchronization is necessary. See "Battery Replacement" and "Resynchronization" under Remote Keyless Entry System Operation on page 2-4. If you are still having trouble, see your dealer or a qualified technician for service. e e e LOCK: Press the LOCK button to lock all the doors. UNLOCK: Press the UNLOCK button once to unlock the driver's door and turn on the interior lamps. See "Illumination on Remote Activation" later in this section for more details. Pause for about one second, then press UNLOCK again to unlock the passenger door. 2-4