1999 Chevrolet Blazer Owner's Manual - Page 133

yellowblue Programming the Transmitter Do not use the universal 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 sure that people and objects are clear of the garage door you are programming. Your vehicle's engine should be turned off while programming the transmitter. Follow these steps to program up to three channels: 1. If you have previously programmed a transmitter channel, proceed to Step 2. Otherwise, hold down the two outside buttons on the universal transmitter until the indicator light begins to flash rapidly (after 20 seconds). Then release the buttons. This procedure initializes the memory and erases any previous settings for all three channels. 2. Decide which one of the three channels you want to program. Hold the end of the hand-held transmitter about 2 to 5 inches (5 to 13 cm) away from the surface of the universal transmitter so that you can still see the indicator light. 3. Using both hands, press the hand-held transmitter button and the desired button on the universal transmitter. Continue to press both buttons through Step 4. 4. Hold down both buttons until you see the red light on the universal transmitter flash rapidly. The rapid flashing indicates that the universal transmitter has been programmed. Release both buttons once the light starts to flash rapidly. If you have trouble programming the universal transmitter, make sure that you have followed the directions exactly as described and that the battery in the hand-held transmitter is not dead. If you still cannot program it, rotate the hand-held transmitter end over end and try again. The universal transmitter may not work with older garage door openers that do not meet current Federal Consumer Safety Standards. If you cannot program the transmitter after repeated attempts, refer to "Training a Garage Door Opener with Rolling Codes" later in this section or contact the manufacturer of the unit at 1-800-355-3515. 2-69