2001 GMC Safari Owner's Manual - Page 93

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 will prevent anyone from recording and playing back the signal from the transmitter. To resynchronize your transmitter, stand close to your vehicle and simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for eight seconds. The door locks should cycle to confirm synchronization. If the locks do not cycle, see your dealer for service. Sliding Door To open the sliding side door, pull the handle toward the back and slide the door to the rear until it rests in the open position. To close the sliding side door, pull the handle toward the front and slide the door forward. 2-14