2000 Chevrolet Monte Carlo Owner's Manual - Page 122

Canadian Programming: During programming, your hand-held transmitter may automatically stop transmitting. Continue to press and hold the HomeLinkR button while you press your hand-held transmitter button every two seconds until the HomeLinkR Transmitter has been programmed. The indicator light will flash slowly and then rapidly after several seconds once it has been successfully programmed. Operating the Transmitter Press and hold the appropriate button on the HomeLinkR Transmitter. The house symbol comes on while the signal is being transmitted. Note that the effective transmission range of the HomeLinkR Transmitter may differ from the hand-held transmitter and from one channel to another. If you have trouble programming the HomeLinkR 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, flip the hand-held transmitter end over end and try again. The HomeLinkR 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, consult your dealer. Be sure to keep the original hand-held transmitter in case you need to erase and reprogram the HomeLinkR Transmitter. Training a Garage Opener with a "Rolling Code" Feature If you programmed the HomeLinkR Transmitter, but the garage door will not open, and if your garage door opener was manufactured after 1995, your garage door may have a security feature that changes the "code" of your garage door opener every time it is opened or closed. To determine if your garage door opener has this "rolling code" feature, press the appropriate button on the HomeLinkR Transmitter that was programmed. If the indicator light flashes rapidly for one to two seconds, then turns solid, your garage door opener has this feature. 2-56