2008 GMC Envoy Owner's Manual - Page 130

Gate Operator and Canadian Programming If you have questions or need help programming the Universal Home Remote System, call 1-800-355-3515 or go to www.homelink.com. Canadian radio-frequency laws require transmitter signals to time out or quit after several seconds of transmission. This may not be long enough for Universal Home Remote to pick up the signal during programming. Similarly, some U.S. gate operators are manufactured to time out in the same manner. If you live in Canada, or you are having difficulty programming a gate operator or garage door opener by using the "Programming Universal Home Remote" procedures, regardless of where you live, replace Step 3 under "Programming Universal Home Remote" with the following: Continue to press and hold the Universal Home Remote button while you press and release every two seconds (cycle) the hand-held transmitter button until the frequency signal has been successfully accepted by the Universal Home Remote. The Universal Home Remote indicator light will flash slowly at first and then rapidly. Proceed with Step 4 under "Programming Universal Home Remote" to complete. Using Universal Home Remote Press and hold the appropriate Universal Home Remote button for at least half of a second. The indicator light will come on while the signal is being transmitted. Erasing Universal Home Remote Buttons Erase the programmed buttons when you sell or terminate your lease. To erase all programmed buttons on the Universal Home Remote device: 1. Press and hold down the two outside buttons until the indicator light begins to flash, after 20 seconds. 2. Release both buttons. 2-56