1998 Chevrolet Lumina Owner's Manual - Page 84

3. Snap the top and bottom together; make sure the halves are together tightly water won't getin. so 4. Test the operationof the transmitter with your vehicle. If the transmitter does not work, try synchronizing the transmitter with your receiver, (located in your vehicle). Synchronization Synchronization may be necessary to the security due method used by this remote keyless entry system. The transmitter does not send the same signal twice to the receiver. The receiver will not respond to a signal it has previously been sent. This prevents someone from recording and playing back signal from the the transmitter. To resynchronize the transmitter with the receiver, do the following: While standing close to your vehicle, simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for about five seconds. The door locks should cycle (lock and unlock) to confirm synchronization. If the locksdo not cycle,see your dealer for service. To replace the battery: 1. Insert aflat object like a dime into the slot on the back of the transmitter. Gently pry apart the front and back. 2. Remove the battery and replace with the new one, it making sure the positive side of the battery is (+) facing down. 2-8