1997 Chevrolet Cavalier Owner's Manual - Page 67

Replacing the Battery in the Keyless Entry System Transmitter 3. Read the instructions inside the case. I 4. Put the two halves back together. Make surethe cover is on tightly, water won't get in. so 5. Check the operation of the transmitter with your vehicle. If the transmitter does not work, try synchronizing the transmitter with the receiver. ~ Synchronization Your remote Keyless Entry Systemis equipped with a security system that prevents anyone from recording and playing back your signal. The transmitter does not send the same signal twice to the receiver. The receiver will not respond toa signal that has been sent to more it than once. To resynchronize your transmitter and receiver, follow these directions: To replace the battery inthe transmitter: 1. Stand close to your vehicle, 1. Use a small coin or flathead screwdriver 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 3 volt battery, type CR2032, or equivalent. 2. Press and hold the LOCK and UNLOCK buttons on the transmitter at the same time, 3. Hold the buttons for at least five seconds. During this time, the doors should lock and unlock once. This confirms theresynchronization. If the doors do not lock and unlock, your dealer for service. see 2-9