2003 Chevrolet Cavalier Owner's Manual - Page 75

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. Battery Replacement Under normal use, the battery in your remote keyless entry transmitter should last about two years. You can tell the battery is weak if the transmitter won't work at the normal range in any location. If you have to get close to your vehicle before the transmitter works, it's probably time to change the battery. Notice: When replacing the battery, use care not to touch any of the circuitry. Static from your body transferred to these surfaces may damage the transmitter. 2-6 To replace the battery in the transmitter: 1 . Use a coin or similar object to separate the bottom half from the top half of the transmitter. 2. Remove the battery and replace it with the new one. Make sure the positive side of the battery faces down. For battery replacement, use a three-volt battery, type CR2032, or equivalent. 3. Read the instructions inside the case. 4. Put the two halves back together. Make sure the cover is on tightly, so water won't get in. 5. Check the operation of the transmitter with your vehicle. If the transmitter does not work, try resynchronizing the transmitter with the receiver.