2003 Hummer H2 Owner's Manual - Page 156
2003 Hummer H2 Manual
Page 156 highlights
Gate Operator and Canadian Programming Canadian radio-frequency laws require transmitter signals to "time out" or quit after several seconds of transmission. This may not be long enough for HomeLink to pick up the signal during programming. Similar to Canadian law, 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 by using the "Programming HomeLink" procedures (regardless of where you live), replace Step 3 under "Programming HomeLink" with the following: Continue to press and hold the HomeLink button while you press and release every two seconds (cycle) your hand-held transmitter until the frequency signal has been successfully accepted by HomeLink. The indicator light will flash slowly and then rapidly. Proceed with Step 4 under "Programming HomeLink" to complete. Using HomeLink Press and hold the appropriate button on HomeLink for at least half of a second. The indicator light will come on while the signal is being transmitted. Erasing HomeLink Buttons To erase programming from the three buttons, press and hold down the two outside buttons until the indicator light begins to flash (after 20 seconds). Release both buttons. Do not hold for longer than 30 seconds. HomeLink is now in the train (learning) mode and can be programmed at any time beginning with Step 2 under "Programming HomeLink". Individual buttons can not be erased, but they can be reprogrammed. See "Reprogramming a Single HomeLink Button" next. 2-74
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