1997 GMC Safari Owner's Manual - Page 127

Universal Transmitter (Option) This devicecomplies with Part 15 of the FCC Rules. Operation issubject to the following two conditions: (1) this devicemay not cause harmful interference, and (2) this device must accept any interference received, including interference may cause that undesired operation. This devicecomplies with RSS-210 of Industry and Science Canada. Operation is subject tothe following two conditions:(1) this device may not cause interference, and (2) this device must accept any interference received, including interference that may cause undesired operation of the device. Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment. This transmitter allows to consolidate the functions you of up to three individual hand-held transmitters. It will operate garage doors gates, or with the and accessory package, other devices controlled by radio frequencysuch as horneloffice lighting systems and security systems. The transmitter will learn and transmit the frequencies of most current transmittersand is powered by your vehicle's battery and charging system. Programming the Transmitter Do not use the transmitter with any garage door opener that does not have the "stop and reverse" feature. This includes any garage door opener model manufactured before April 1, 1982. Be surethat people and objects are clear the garage of door you are programming. 2-53