1998 GMC Savana Van Owner's Manual - Page 80

Operation To unlock the driver's door, press the UNLOCK button. If you press this buttonagain within five seconds, all the doors will unlock. Press theREAR 2X button twice to unlock the rear door only. When the UNLOCK or REAR 2X button is pressed, the interiordome lamps are turned on for 40 seconds or until the ignition switch is activated. Press LOCK to lock all doors. Battery Replacement Under normal use,the battery in your remote keyless entry transmitter should last about two years. You can tell the battery is weak the transmitter won't if work at the normal range in any location. you have to If get close to your vehicle before the transmitter works, it's probably timeto change the battery. Matching Transmitter(s)To Your Vehicle Each remote keylessentry transmitter is codedto prevent another transmitter from unlocking your vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your dealer. Remember to bring any remaining transmitters with you when you go to your dealer. When the dealer matches the replacement transmitter to your vehicle, any remaining transmitters must also be matched. Once your dealer has coded the new transmitter, the lost transmitter will not unlock your vehicle. Each vehicle can have only transmitters two matched to it. NOTICE: When replacing the battery, use care not to touch any of the circuitry. Static from your body transferred to these surfaces may damage the transmitter. Use one Pmasonic@type CR2032 battery: 2-8