2000 GMC Sierra 1500 Pickup Owner's Manual - Page 87

yellowblue 1. Insert a dime in the slot between the covers of the transmitter housing near the key ring hole. Remove the bottom by twisting the dime. 2. Remove and replace the battery with a three-volt CR2032 or equivalent battery, positive (+) side up. 3. Align the covers and snap them together. 4. Resynchronize the transmitter. 5. Check the operation of the transmitter. Rear Access Door (Extended Cab) Your vehicle is equipped with a rear access door that allows easier access to the rear area of the extended cab. To open a rear access door from the outside, first open the front door. Then, use the handle located on the front edge of the rear access door to open it. 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 that has been sent previously. This prevents anyone from recording and playing back the signal from the transmitter. To resynchronize your transmitter, stand close to your vehicle and press and hold the LOCK and UNLOCK buttons on the transmitter at the same time for seven seconds. The door locks should cycle to confirm synchronization. If the locks do not cycle, see your dealer for service. You must fully close a rear access door before you can close the front door. 2-9