1998 GMC Suburban Owner's Manual - Page 143

I This device complieswith Part 15 of the FCC Rules. Operation is subjectto the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept interference any received, including interferencethat may cause undesired operation. This device complieswith RSS-210 of Industry and Science Canada. Operation is subject the following to two conditions: (1) this devicemay not cause interference, and (2) this device must accept any interference, including interference that cause may undesired operationof the device. Your vehicle's engine should be turned while off programming the transmitter. Follow these stepsD program up to three channels. A 1. If you have not previously programmed a universal channel, proceed to Step 2. Otherwise, hold down the two outside buttons on the universal transmitter until the red light beginsto flash rapidly (approximately 20 seconds). Then release the buttons. This procedure initializes the memory and erases any previous settings for all three channels. 2. Hold the end of the hand-held transmitter against the bottom surfaceof the universal transmitter that so you can still see the red light. Changes and modifications to system by other than this an authorized service facility could void authorization to 3. Decide which oneof the three channelsyou want to use this equipment. program. Using both hands, press the hand-held transmitter button and the desired button on the Programming the Transmitter universal transmitter. Continue hold both buttons to Do not use the transmitter with garage door opener any through Step4. that does not have the "stop and reverse'' feature. This 4. Hold down both buttons until you see the red light includes any garage door opener model manufactured on the universal transmitter flash rapidly. The rapid before April 1, 1982. flashing, which could take to 90 seconds, up Be sure that people and objects clear of the garage are indicates that the universal transmitter has been door you are programming. programmed. Release both buttons once the light starts flashingrapidly. 2-65