2001 Chevrolet Impala Owner's Manual - Page 140

Programming the HomeLinkR 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 sure that people and objects are clear of the garage door you are programming! The engine should be turned off while programming the HomeLink Transmitter. Follow these steps to program up to three channels: 1. If you have not previously programmed a universal channel, proceed to Step 2. Otherwise, hold down the two outside buttons on the HomeLink Transmitter until the indicator light begins to 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 approximately one to three inches (three to eight cm) away from the HomeLink Transmitter making sure that you can still see the display. 3. Decide which one of the three channels you want to program. Using both hands, press the hand-held transmitter button and the desired button on the HomeLink Transmitter. Continue to hold both buttons through Step 4. 4. Hold down both buttons until you see the indicator light on the HomeLink Transmitter flash, first slowly then rapidly. The rapid flashing, which could take up to 90 seconds, indicates that the HomeLink Transmitter has been programmed. Release both buttons once the light starts to flash rapidly. 2-70