1996 GMC Savana Van Owner's Manual - Page 63

Ke: 1trv Sys I - ___ If your vehicle has this option, you can lock and unlock your doors from up to 30 feet (9 m) away using the key chain transmitter supplied with your vehicle. Your Keyless Entry System operates on a radio frequency subject to Federal Communications Commission (FCC) Rules. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Should interference to this system occur, try this: 0 Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment. Operation Check to determineif battery replacement is necessary. See the instructions on battery replacement. Check the distance. You may be too far from your vehicle. This product has a maximum range. To unlock the driver's door, press the UNLOCK button. I f you press this button again within five seconds, all the doors will unlock. Press the REAR button to unlock the rear door only. When the UNLOCK or REAR button is pressed, the interior dome lamps are turned on for 40 seconds or until the ignition switch is activated. 0 a Check the location. Other vehicles or objects may be blocking the signal. 0 See your GM dealer ora qualified technician for service.