1999 Chevrolet Express Van Owner's Manual - Page 77

yellowblue To resynchronize your transmitter, stand close to your vehicle and simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for at least five seconds. The door locks should cycle to confirm synchronization. If the locks do not cycle, see your dealer for service. Sliding Side Door (Option) 3. Align the covers and snap them together. 4. Check the operation of the transmitter. Resynchronization Resynchronization may be necessary due to the security method used by this system. The transmitter does not send the same signal twice to the receiver. The receiver will not respond to a signal it has been sent previously. This prevents anyone from recording and playing back the signal from the transmitter. To open the sliding side door from outside, pull the handle toward the rear of the vehicle. Then, slide the door toward the rear of the vehicle to open. 2-9